/* ==================== ROOT VARIABLES ==================== */
:root {
    /* Colors - Dark Theme (Default) */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #ec4899;
    --accent-color: #14b8a6;
    --bg-dark: #0f172a;
    --bg-light: #1e293b;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --success-color: #10b981;
    --error-color: #ef4444;

    /* Spacing */
    --section-padding: 100px 0;
    --container-padding: 0 20px;

    /* Transitions */
    --transition: all 0.3s ease;
    --transition-slow: all 0.6s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
}

/* ==================== LIGHT THEME ==================== */
[data-theme="light"] {
    --bg-dark: #f8fafc;
    --bg-light: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.2);
}

/* Smooth theme transitions */
body,
.navbar,
.nav-links a,
.project-card,
.skill-card,
.testimonial-card,
.timeline-content,
.contact-form,
.footer {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Light theme specific overrides */
[data-theme="light"] .navbar {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .hero-particles {
    opacity: 0.3;
}

[data-theme="light"] .terminal-window {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

/* ==================== ACCESSIBILITY ==================== */
.skip-to-content {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 12px 24px;
    border-radius: 0 0 8px 8px;
    z-index: 10001;
    font-weight: 600;
    text-decoration: none;
    transition: top 0.3s ease;
}

.skip-to-content:focus {
    top: 0;
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Focus styles for interactive elements */
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* ==================== RESET & BASE STYLES ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

::selection {
    background: var(--primary-color);
    color: white;
}

/* ==================== SCROLLBAR ==================== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* ==================== UTILITIES ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 60px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 30px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.btn-outline {
    background: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
}

.btn-outline:hover {
    background: var(--accent-color);
    color: white;
    transform: translateY(-3px);
}

/* ==================== DOCUMENTS SECTION ==================== */
.documents-section {
    margin-top: 60px;
}

.documents-title {
    font-size: 1.5rem;
    text-align: center;
    margin-bottom: 30px;
    color: var(--text-primary);
}

.documents-grid {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.document-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px 30px;
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.document-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 0 30px rgba(99, 102, 241, 0.15);
    background: rgba(30, 41, 59, 0.8);
}

[data-theme="light"] .document-card {
    background: rgba(255, 255, 255, 0.7);
    border-color: rgba(255, 255, 255, 0.5);
}

[data-theme="light"] .document-card:hover {
    background: rgba(255, 255, 255, 0.85);
}

.document-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    color: white;
    font-size: 1.3rem;
}

.document-label {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
}

/* ==================== CODE SHOWCASE ==================== */
.code-showcase {
    margin-top: 40px;
}

.code-showcase-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.code-showcase-title i {
    color: var(--accent-color);
}

.code-window {
    background: #1e1e1e;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    border: 1px solid #333;
}

.code-header {
    background: linear-gradient(180deg, #3c3c3c, #2d2d2d);
    padding: 12px 15px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.code-buttons {
    display: flex;
    gap: 8px;
}

.code-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.code-btn.red { background: #ff5f56; }
.code-btn.yellow { background: #ffbd2e; }
.code-btn.green { background: #27c93f; }

.code-tabs {
    display: flex;
    gap: 5px;
    margin-left: auto;
}

.code-tab {
    background: transparent;
    border: none;
    color: #888;
    padding: 6px 12px;
    font-size: 0.8rem;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.code-tab:hover {
    color: #ccc;
    background: rgba(255, 255, 255, 0.05);
}

.code-tab.active {
    color: #fff;
    background: rgba(99, 102, 241, 0.3);
}

.code-body {
    padding: 20px;
    min-height: 200px;
}

.code-content {
    margin: 0;
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.85rem;
    line-height: 1.8;
    color: #d4d4d4;
}

.code-content.hidden {
    display: none;
}

.code-content code {
    display: block;
}

.line-number {
    display: inline-block;
    width: 30px;
    color: #5a5a5a;
    user-select: none;
    text-align: right;
    margin-right: 15px;
}

.code-content .keyword { color: #569cd6; }
.code-content .function { color: #dcdcaa; }
.code-content .string { color: #ce9178; }
.code-content .comment { color: #6a9955; }
.code-content .number { color: #b5cea8; }

/* ==================== NAVIGATION ==================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    padding: 15px 0;
    background: rgba(15, 23, 42, 0.98);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link:hover::after {
    width: 100%;
}

/* Theme Toggle Button */
.theme-toggle {
    background: transparent;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 1.1rem;
    transition: var(--transition);
    margin-right: 15px;
}

.theme-toggle:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: rotate(15deg);
}

.theme-toggle i {
    transition: transform 0.3s ease;
}

[data-theme="light"] .theme-toggle i {
    transform: rotate(360deg);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: var(--transition);
}

/* ==================== HERO SECTION ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 20px 80px;
    overflow: hidden;
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.1), transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(236, 72, 153, 0.1), transparent 50%);
    pointer-events: none;
}

/* Three.js Hero Canvas */
#hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text {
    animation: fadeInUp 1s ease;
}

.greeting {
    display: block;
    font-size: 1.75rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.welcome-message {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 15px;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.5s ease, transform 0.5s ease;
    font-style: italic;
}

.welcome-message.visible {
    opacity: 1;
    transform: translateY(0);
}

.name {
    display: block;
    font-size: 3.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.hero-subtitle {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 20px;
    min-height: 60px;
}

.typing-text {
    font-weight: 600;
}

.cursor {
    color: var(--primary-color);
    animation: blink 0.7s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.hero-social {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1.3rem;
    transition: var(--transition);
    border: 2px solid transparent;
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.hero-image {
    animation: fadeInRight 1s ease;
}

.image-wrapper {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 0 auto;
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 2;
}

.image-frame {
    position: absolute;
    top: 20px;
    left: 20px;
    width: 100%;
    height: 100%;
    border: 3px solid var(--primary-color);
    border-radius: 20px;
    z-index: 1;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--primary-color);
    border-radius: 20px;
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 10px;
    background: var(--primary-color);
    border-radius: 2px;
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0% { opacity: 1; top: 10px; }
    100% { opacity: 0; top: 30px; }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ==================== ABOUT SECTION ==================== */
.about {
    padding: var(--section-padding);
    background: var(--bg-light);
}

.about-content {
    max-width: 900px;
    margin: 0 auto 60px;
}

.about-text h3 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.info-item {
    display: flex;
    gap: 15px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: 10px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.info-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.info-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.info-item strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.info-item span {
    color: var(--text-secondary);
    font-size: 0.95rem;
    word-break: break-word;
    overflow-wrap: break-word;
}

/* ==================== ACHIEVEMENTS ==================== */
.achievements {
    margin-top: 60px;
}

.achievements-title {
    font-size: 2rem;
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 40px;
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
}

.award-card {
    background: var(--bg-card);
    padding: 30px 20px;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.award-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.award-icon {
    margin-bottom: 15px;
}

.award-logo {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

.award-icon i {
    font-size: 3rem;
    color: var(--accent-color);
}

.award-card h4 {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
}

.award-card-expandable {
    cursor: pointer;
}

.award-card .award-description {
    display: none;
}

.award-card.expanded .award-description {
    display: block;
}

.award-card-detailed {
    grid-column: span 2;
    text-align: left;
    padding: 25px;
}

.award-card-detailed h4 {
    text-align: left;
    margin-bottom: 10px;
}

.award-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-top: 10px;
}

@media (max-width: 768px) {
    .award-card-detailed {
        grid-column: span 1;
    }
}

/* ==================== ACADEMIC EXCELLENCE SECTION ==================== */
.academics {
    padding: var(--section-padding);
    background: var(--bg-dark);
}

/* Academic Stats Bar */
.academic-stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    margin: 40px 0;
}

.academic-stats .stat-card {
    background: var(--bg-card);
    padding: 25px 35px;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    text-align: center;
    min-width: 140px;
    transition: var(--transition);
}

.academic-stats .stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.academic-stats .stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.academic-stats .stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 5px;
}

/* GPA Showcase */
.gpa-showcase {
    display: flex;
    justify-content: center;
    margin: 50px 0;
}

.gpa-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    border: 2px solid var(--primary-color);
    border-radius: 20px;
    padding: 40px 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.gpa-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

.gpa-number {
    position: relative;
    z-index: 1;
}

.gpa-value {
    font-size: 5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.gpa-max {
    font-size: 1.5rem;
    color: var(--text-muted);
    font-weight: 400;
}

.gpa-label {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-top: 10px;
    font-weight: 500;
    position: relative;
    z-index: 1;
}

.gpa-context {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
    position: relative;
    z-index: 1;
}

.gpa-badge {
    background: var(--bg-card);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.gpa-badge i {
    color: var(--primary-color);
}

.gpa-major {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
    position: relative;
    z-index: 1;
}

.gpa-major strong {
    color: var(--text-primary);
}

/* Courses Heading */
.courses-heading {
    text-align: center;
    font-size: 1.5rem;
    color: var(--text-primary);
    margin: 50px 0 30px;
    position: relative;
}

.courses-heading::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: 15px auto 0;
    border-radius: 3px;
}

.in-progress-heading {
    color: var(--accent-color);
}

/* Courses Grid */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.in-progress-grid {
    opacity: 0.9;
}

/* Course Card */
.course-card {
    background: var(--bg-card);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.course-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.course-card.in-progress {
    border-color: var(--accent-color);
    border-style: dashed;
}

.course-logo-banner {
    height: 50px;
    background: rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
}

.course-logo {
    max-height: 40px;
    max-width: 90%;
    object-fit: contain;
}

.course-card-header {
    padding: 20px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.05));
    position: relative;
}

.course-card.in-progress .course-card-header {
    background: linear-gradient(135deg, rgba(20, 184, 166, 0.1), rgba(99, 102, 241, 0.05));
}

.course-code {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.course-card.in-progress .course-code {
    color: var(--accent-color);
}

.course-name {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 5px;
    line-height: 1.4;
}

.course-grade {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
}

.course-grade.in-progress {
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    font-size: 0.75rem;
}

.course-grade.upcoming {
    background: linear-gradient(135deg, #7c3aed, #4f46e5);
    font-size: 0.75rem;
}

.course-card.upcoming {
    border-color: #7c3aed;
    border-style: dashed;
    opacity: 0.92;
}

.course-card.upcoming .course-card-header {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(79, 70, 229, 0.05));
}

.course-card.upcoming .course-code {
    color: #7c3aed;
}

.upcoming-courses-grid {
    opacity: 0.9;
}

.upcoming-heading {
    color: #7c3aed;
}

/* Ongoing badge for consolidated Calculus card */
.course-grade.upcoming[data-grade="Ongoing"] {
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    font-size: 0.75rem;
}

.course-card-body {
    padding: 20px;
}

.course-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 15px;
}

.course-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.course-skill-tag {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.course-card.in-progress .course-skill-tag {
    background: rgba(20, 184, 166, 0.1);
    color: var(--accent-color);
}

/* ==================== CURRENTLY BUILDING SHOWCASE ==================== */
.currently-building-showcase {
    width: 85%;
    max-width: 1000px;
    margin: 60px auto 40px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(236, 72, 153, 0.08));
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.currently-building-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: rgba(15, 23, 42, 0.6);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.currently-building-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.05em;
}

.active-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: #ef4444;
    border-radius: 50%;
    animation: pulse-active 1.5s ease-in-out infinite;
}

@keyframes pulse-active {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.4);
        opacity: 0.6;
    }
}

.currently-building-panels {
    display: flex;
    padding: 0;
}

.currently-panel {
    flex: 1;
    padding: 28px;
}

.building-panel {
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.panel-divider {
    display: none;
}

.panel-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.panel-icon {
    font-size: 1.25rem;
}

.panel-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.08em;
}

.project-highlight {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(99, 102, 241, 0.1);
    padding: 14px 18px;
    border-radius: 12px;
    margin-bottom: 16px;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.project-icon {
    font-size: 1.5rem;
}

.project-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.currently-building-showcase .project-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 18px;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-badge {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-color);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    transition: var(--transition);
}

.tech-badge:hover {
    background: rgba(99, 102, 241, 0.25);
    transform: translateY(-2px);
}

.learning-panel .learning-list {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
}

.learning-panel .learning-list li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 14px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

.learning-panel .learning-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.learning-goal {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    background: rgba(20, 184, 166, 0.1);
    border-radius: 12px;
    border: 1px solid rgba(20, 184, 166, 0.2);
}

.goal-icon {
    font-size: 1.1rem;
}

.goal-text {
    color: var(--accent-color);
    font-size: 0.9rem;
    font-weight: 600;
}

/* Currently Building - Mobile Responsive */
@media (max-width: 768px) {
    .currently-building-showcase {
        width: 95%;
        margin: 40px auto 30px;
    }

    .currently-building-header {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .currently-building-panels {
        flex-direction: column;
    }

    .building-panel {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .currently-panel {
        padding: 24px 20px;
    }

    .project-highlight {
        flex-direction: column;
        text-align: center;
    }

    .tech-stack {
        justify-content: center;
    }

    .learning-goal {
        flex-direction: column;
        text-align: center;
    }
}

.course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.course-semester {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.course-semester i {
    margin-right: 5px;
}

.course-projects-count {
    color: var(--secondary-color);
    font-size: 0.85rem;
    font-weight: 500;
}

.course-card-footer {
    padding: 15px 20px;
    background: var(--bg-light);
    display: flex;
    gap: 10px;
}

.course-btn {
    flex: 1;
    padding: 10px 15px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.course-btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
}

.course-btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.course-btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.course-btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Course Modal */
.course-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow-y: auto;
}

.course-modal-content {
    background: var(--bg-card);
    border-radius: 20px;
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    overscroll-behavior: contain;
    position: relative;
    border: 1px solid var(--border-color);
}

.course-modal-header {
    padding: 30px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.05));
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.course-modal-header .course-code {
    font-size: 1rem;
}

.course-modal-header .course-name {
    font-size: 1.5rem;
    margin-top: 8px;
}

.course-modal-header .course-grade {
    top: 25px;
    right: 25px;
    font-size: 1rem;
    padding: 8px 18px;
}

.course-modal-meta {
    display: flex;
    gap: 20px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.course-modal-meta span {
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.course-modal-meta span i {
    color: var(--primary-color);
}

.course-modal-body {
    padding: 30px;
}

.course-modal-section {
    margin-bottom: 30px;
}

.course-modal-section h3 {
    color: var(--text-primary);
    font-size: 1.1rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.course-modal-section h3 i {
    color: var(--primary-color);
}

.course-modal-section p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.course-topics-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.course-topic-tag {
    background: var(--bg-light);
    color: var(--text-secondary);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
}

.course-skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.course-skill-badge {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* Course Project Cards in Modal */
.course-project-card {
    background: var(--bg-light);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
}

.course-project-card h4 {
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 10px;
}

.course-project-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.course-project-highlights {
    list-style: none;
    padding: 0;
    margin-bottom: 15px;
}

.course-project-highlights li {
    color: var(--text-secondary);
    font-size: 0.85rem;
    padding-left: 20px;
    position: relative;
    margin-bottom: 8px;
    line-height: 1.5;
}

.course-project-highlights li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.course-project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.course-project-tech span {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    padding: 4px 10px;
    border-radius: 10px;
    font-size: 0.75rem;
}

.course-modal-links {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.course-modal-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
}

.course-modal-link.primary {
    background: var(--primary-color);
    color: white;
}

.course-modal-link.primary:hover {
    background: var(--secondary-color);
}

.course-modal-link.secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.course-modal-link.secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.course-modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: var(--transition);
    z-index: 10;
}

.course-modal-close:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Academic Section Responsive */
@media (max-width: 768px) {
    .academic-stats {
        gap: 15px;
    }
    
    .academic-stats .stat-card {
        padding: 20px 25px;
        min-width: 120px;
    }
    
    .academic-stats .stat-number {
        font-size: 2rem;
    }
    
    .gpa-card {
        padding: 30px;
    }
    
    .gpa-value {
        font-size: 3.5rem;
    }
    
    .gpa-context {
        flex-direction: column;
        gap: 10px;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .course-modal-content {
        margin: 10px;
        max-height: 95vh;
    }
    
    .course-modal-header,
    .course-modal-body {
        padding: 20px;
    }
}

/* ==================== CERTIFICATIONS SECTION ==================== */
.certifications {
    padding: var(--section-padding);
    background: var(--bg-light);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.certification-card {
    background: var(--bg-card);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    padding: 25px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.certification-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.certification-card:hover::before {
    transform: scaleX(1);
}

.certification-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.certification-header {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 15px;
}

.certification-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.certification-icon i {
    font-size: 1.4rem;
    color: white;
}

.certification-info {
    flex: 1;
    min-width: 0;
}

.certification-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 5px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.certification-issuer {
    font-size: 0.85rem;
    color: var(--primary-color);
    font-weight: 500;
}

.certification-description {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.certification-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 15px;
}

.certification-skill {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.certification-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--primary-color);
    color: white;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    width: 100%;
    justify-content: center;
}

.certification-link:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* ==================== PROFESSIONAL DEVELOPMENT SECTION ==================== */
.professional-development {
    padding: var(--section-padding);
    background: var(--bg-dark);
}

.development-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.development-card {
    background: var(--bg-card);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    padding: 25px;
    padding-top: 50px;
    transition: var(--transition);
    position: relative;
}

.development-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.development-card-header {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 15px;
}

.development-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.development-icon i {
    font-size: 1.4rem;
    color: white;
}

.development-info {
    flex: 1;
    min-width: 0;
}

.development-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 5px;
}

.development-org {
    display: block;
    font-size: 0.9rem;
    color: var(--accent-color);
    font-weight: 500;
    margin-bottom: 3px;
}

.development-type {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.development-status {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 600;
}

.development-status.completed {
    background: rgba(34, 197, 94, 0.15);
    color: #22c55e;
}

.development-status.in-progress {
    background: rgba(20, 184, 166, 0.15);
    color: var(--accent-color);
}

.development-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 15px;
}

.development-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.development-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.development-meta-item i {
    color: var(--accent-color);
}

.development-impact {
    background: linear-gradient(135deg, rgba(20, 184, 166, 0.1), rgba(99, 102, 241, 0.1));
    padding: 12px 15px;
    border-radius: 10px;
    margin-bottom: 15px;
}

.development-impact-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 5px;
}

.development-impact-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--accent-color);
}

.development-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.development-skill {
    background: rgba(20, 184, 166, 0.1);
    color: var(--accent-color);
    padding: 5px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

.development-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: transparent;
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
}

.development-link:hover {
    background: var(--accent-color);
    color: white;
}

/* Responsive for Certifications and Development */
@media (max-width: 768px) {
    .certifications-grid {
        grid-template-columns: 1fr;
    }
    
    .development-grid {
        grid-template-columns: 1fr;
    }
    
    .development-card {
        padding-top: 50px;
    }
    
    .development-status {
        top: 15px;
        right: 15px;
    }
}

/* ==================== TERMINAL SECTION ==================== */
.terminal-section {
    padding: var(--section-padding);
    background: var(--bg-dark);
}

.terminal-window {
    max-width: 700px;
    margin: 0 auto;
    background: #1a1a2e;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border: 1px solid #333;
}

.terminal-header {
    background: linear-gradient(180deg, #3d3d5c, #2d2d44);
    padding: 12px 15px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.terminal-buttons {
    display: flex;
    gap: 8px;
}

.terminal-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-btn.red { background: #ff5f56; }
.terminal-btn.yellow { background: #ffbd2e; }
.terminal-btn.green { background: #27ca40; }

.terminal-title {
    color: #888;
    font-size: 0.85rem;
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

.terminal-body {
    padding: 20px;
    height: 480px;
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.9rem;
    line-height: 1.8;
    color: #00ff00;
    overflow: hidden;
}

.terminal-output {
    white-space: pre-wrap;
    word-break: break-word;
}

.terminal-line {
    margin-bottom: 5px;
}

.terminal-line.command {
    color: #00ff00;
}

.terminal-line.output {
    color: #888;
    padding-left: 10px;
}

.terminal-line .prompt {
    color: #6366f1;
    margin-right: 8px;
}

.terminal-input-line {
    display: flex;
    align-items: center;
    margin-top: 10px;
}

.terminal-prompt {
    color: #6366f1;
    margin-right: 8px;
}

.terminal-cursor {
    color: #00ff00;
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* Terminal responsive */
@media (max-width: 768px) {
    .terminal-body {
        font-size: 0.8rem;
        height: 440px;
        padding: 15px;
    }
}

/* ==================== JOURNEY/TIMELINE SECTION ==================== */
.journey {
    padding: var(--section-padding);
    background: var(--bg-light);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 50px auto 0;
    padding: 20px 0;
}

.timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color), var(--accent-color));
    transform: translateX(-50%);
    border-radius: 3px;
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    width: 50%;
    padding-right: 40px;
}

.timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: 40px;
}

.timeline-dot {
    position: absolute;
    right: -8px;
    top: 20px;
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border: 3px solid var(--bg-dark);
    border-radius: 50%;
    z-index: 2;
    transition: var(--transition);
}

.timeline-item:nth-child(even) .timeline-dot {
    right: auto;
    left: -8px;
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.3);
    box-shadow: 0 0 15px var(--primary-color);
}

.timeline-item:nth-child(3n+1) .timeline-dot { background: var(--primary-color); }
.timeline-item:nth-child(3n+2) .timeline-dot { background: var(--secondary-color); }
.timeline-item:nth-child(3n) .timeline-dot { background: var(--accent-color); }

.timeline-content {
    background: var(--bg-card);
    padding: 25px;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.timeline-date {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.timeline-content h3 {
    color: var(--text-primary);
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Future milestone special styling */
.timeline-future .timeline-dot {
    background: var(--accent-color);
    animation: pulse 2s infinite;
}

.timeline-future .timeline-content {
    border-color: var(--accent-color);
    box-shadow: 0 0 20px rgba(20, 184, 166, 0.2);
}

.timeline-future .timeline-date {
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
}

/* Timeline responsive */
@media (max-width: 768px) {
    .timeline-line {
        left: 20px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(even) {
        width: 100%;
        padding-left: 50px;
        padding-right: 0;
        margin-left: 0;
    }
    
    .timeline-dot,
    .timeline-item:nth-child(even) .timeline-dot {
        left: 12px;
        right: auto;
    }
}

/* ==================== SKILLS SECTION ==================== */
.skills {
    padding: var(--section-padding);
}

/* Skills Radar Chart */
.skills-chart-wrapper {
    max-width: 500px;
    margin: 0 auto 50px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

@media (max-width: 768px) {
    .skills-chart-wrapper {
        max-width: 100%;
        padding: 15px;
    }
}

.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.skill-category {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.skill-category:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.skill-category h3 {
    color: var(--text-primary);
    font-size: 1.3rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.skill-category h3 i {
    color: var(--primary-color);
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-item {
    background: var(--bg-light);
    padding: 10px 18px;
    border-radius: 20px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    border: 1px solid transparent;
}

.skill-item:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

.skill-item i {
    font-size: 1.1rem;
}

/* ==================== PROJECTS SECTION ==================== */
.projects {
    padding: var(--section-padding);
    background: var(--bg-light);
}

.projects-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 25px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 25px;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.project-card {
    background: var(--bg-card);
    border-radius: 15px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.project-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
    position: relative;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.overlay-btn {
    width: 45px;
    height: 45px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    transition: var(--transition);
}

.overlay-btn:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

.project-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.project-tag {
    padding: 4px 12px;
    background: var(--bg-light);
    border-radius: 12px;
    color: var(--accent-color);
    font-size: 0.8rem;
    font-weight: 600;
}

.project-content h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.project-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1;
}

.project-links {
    display: flex;
    gap: 10px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.project-link {
    flex: 1;
    padding: 10px;
    text-align: center;
    background: var(--bg-light);
    color: var(--text-primary);
    border-radius: 8px;
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
}

.project-link:hover {
    background: var(--primary-color);
    color: white;
}

.project-card.hidden {
    display: none;
}

/* ==================== CONTACT SECTION ==================== */
.contact {
    padding: var(--section-padding);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info h3 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.contact-info p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 30px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    gap: 15px;
    padding: 15px;
    background: var(--bg-card);
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.contact-item strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.contact-item a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.contact-item a:hover {
    color: var(--primary-color);
}

.contact-social {
    display: flex;
    gap: 15px;
}

.social-btn {
    flex: 1;
    padding: 12px 20px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: var(--transition);
}

.social-btn:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.contact-form-wrapper {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 15px;
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
    transform: translateY(-2px);
}

.form-group input:valid:not(:placeholder-shown),
.form-group textarea:valid:not(:placeholder-shown) {
    border-color: rgba(16, 185, 129, 0.5);
}

.form-group input:invalid:not(:placeholder-shown):not(:focus),
.form-group textarea:invalid:not(:placeholder-shown):not(:focus) {
    border-color: rgba(239, 68, 68, 0.5);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Submit button enhancements */
.contact-form .btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    padding: 16px 32px;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.contact-form .btn-primary:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

.contact-form .btn-primary:active:not(:disabled) {
    transform: translateY(-1px);
}

.contact-form .btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Shimmer effect on hover */
.contact-form .btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: left 0.5s ease;
}

.contact-form .btn-primary:hover:not(:disabled)::before {
    left: 100%;
}

/* Loading spinner */
.btn-loader {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-loader .spinner {
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Form status messages */
.form-status {
    margin-top: 20px;
    padding: 16px;
    border-radius: 8px;
    font-weight: 500;
    display: none;
    opacity: 0;
    transform: translateY(-10px);
}

.form-status.success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
}

.form-status.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
}

.form-status.animate-in {
    animation: slideIn 0.3s ease forwards;
}

.form-status.animate-out {
    animation: slideOut 0.3s ease forwards;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-10px);
    }
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--bg-light);
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-content p {
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    gap: 25px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .name {
        font-size: 3rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-social {
        justify-content: center;
    }

    .image-wrapper {
        width: 300px;
        height: 300px;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(15, 23, 42, 0.98);
        width: 100%;
        text-align: center;
        padding: 30px 0;
        gap: 20px;
        transition: var(--transition);
        border-top: 1px solid var(--border-color);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(8px, -8px);
    }

    .section-title {
        font-size: 2.5rem;
    }

    .name {
        font-size: 2.5rem;
    }

    .awards-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

    .contact-form-wrapper {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 2rem;
    }

    .name {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== FEATURED PROJECT ENHANCEMENTS ==================== */
.featured-project {
    border: 2px solid var(--accent-color);
    box-shadow: 0 0 30px rgba(20, 184, 166, 0.2);
}

.featured-project:hover {
    box-shadow: 0 0 40px rgba(20, 184, 166, 0.4);
}

.featured-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, var(--accent-color), #0d9488);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    z-index: 2;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    animation: pulse 2s infinite;
}

.featured-badge i {
    font-size: 0.9rem;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.project-details-btn {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.project-details-btn:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--secondary-color));
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ==================== PROJECT MODAL STYLES ==================== */
.project-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 20px;
    animation: fadeIn 0.3s ease;
    overflow-y: auto;
    overscroll-behavior: contain; /* Prevent scroll chaining */
}

.project-modal-content {
    background: var(--bg-card);
    border-radius: 20px;
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    overscroll-behavior: contain; /* Prevent scroll chaining to background */
    position: relative;
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.4s ease;
}

.modal-closing .project-modal-content {
    animation: slideDown 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        transform: translateY(0);
        opacity: 1;
    }
    to {
        transform: translateY(30px);
        opacity: 0;
    }
}

.modal-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.modal-close-btn:hover {
    background: var(--error-color);
    border-color: var(--error-color);
    transform: rotate(90deg);
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 40px 40px 30px;
    border-radius: 20px 20px 0 0;
    position: relative;
}

.featured-badge-large {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    padding: 8px 18px;
    border-radius: 20px;
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.modal-header h2 {
    color: white;
    font-size: 2.2rem;
    margin-bottom: 15px;
}

.modal-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.modal-tags .project-tag {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.modal-body {
    padding: 35px 40px;
}

.modal-description,
.modal-highlights,
.modal-tech-stack {
    margin-bottom: 30px;
}

.modal-description h3,
.modal-highlights h3,
.modal-tech-stack h3 {
    color: var(--text-primary);
    font-size: 1.4rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-description h3 i,
.modal-highlights h3 i,
.modal-tech-stack h3 i {
    color: var(--primary-color);
}

.modal-description p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
}

.modal-highlights ul {
    list-style: none;
    padding: 0;
}

.modal-highlights li {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    padding-left: 30px;
    margin-bottom: 12px;
    position: relative;
}

.modal-highlights li::before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-size: 1.5rem;
    font-weight: bold;
}

.tech-stack-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-badge {
    background: var(--bg-light);
    color: var(--text-primary);
    padding: 10px 18px;
    border-radius: 20px;
    font-size: 0.95rem;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.tech-badge:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.modal-links {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    padding-top: 20px;
    border-top: 2px solid var(--border-color);
}

.modal-link-btn {
    flex: 1;
    min-width: 180px;
    padding: 15px 25px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: var(--transition);
    border: 2px solid transparent;
}

.modal-link-btn.primary {
    background: var(--primary-color);
    color: white;
}

.modal-link-btn.primary:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.modal-link-btn.secondary {
    background: var(--bg-dark);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.modal-link-btn.secondary:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

.modal-link-btn.tertiary {
    background: var(--accent-color);
    color: white;
}

.modal-link-btn.tertiary:hover {
    background: #0d9488;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* Modal responsive styles */
@media (max-width: 768px) {
    .project-modal-content {
        max-height: 95vh;
        margin: 10px;
    }

    .modal-header,
    .modal-body {
        padding: 25px 20px;
    }

    .modal-header h2 {
        font-size: 1.8rem;
    }

    .modal-link-btn {
        min-width: 100%;
    }

    .modal-close-btn {
        top: 10px;
        right: 10px;
    }
}

/* ==================== PRELOADER STYLES ==================== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    overflow: hidden;
    /* CSS FAILSAFE: Auto-hide preloader after 5 seconds if JS fails */
    animation: preloaderFallbackHide 0.5s ease-out 5s forwards;
}

/* CSS Failsafe animation - hides preloader even if JavaScript fails */
@keyframes preloaderFallbackHide {
    to {
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
    }
}

.preloader::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.08) 0%, transparent 40%);
    animation: preloaderBg 4s ease-in-out infinite;
}

@keyframes preloaderBg {
    0%, 100% { transform: translate(-25%, -25%) rotate(0deg); }
    50% { transform: translate(-25%, -25%) rotate(180deg); }
}

.preloader-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
    z-index: 1;
}

.preloader-logo {
    font-size: 5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 60px rgba(99, 102, 241, 0.5);
}

.preloader-spinner {
    position: relative;
    width: 80px;
    height: 80px;
}

.spinner-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 3px solid transparent;
    animation: spinnerRotate 1.5s linear infinite;
}

.spinner-ring:nth-child(1) {
    border-top-color: var(--primary-color);
    animation-delay: 0s;
}

.spinner-ring:nth-child(2) {
    width: 70%;
    height: 70%;
    top: 15%;
    left: 15%;
    border-right-color: var(--secondary-color);
    animation-delay: 0.15s;
    animation-direction: reverse;
}

.spinner-ring:nth-child(3) {
    width: 40%;
    height: 40%;
    top: 30%;
    left: 30%;
    border-bottom-color: var(--accent-color);
    animation-delay: 0.3s;
}

@keyframes spinnerRotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.preloader-text {
    color: var(--text-muted);
    font-size: 0.95rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* Loading state - hide content */
body.loading {
    overflow: hidden;
}

body.loading > *:not(.preloader) {
    opacity: 0;
}

body.loaded > *:not(.preloader) {
    opacity: 1;
}

/* ==================== SCROLL PROGRESS BAR ==================== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    transform-origin: left;
    transform: scaleX(0);
    z-index: 10000;
    transition: transform 0.1s linear;
}

/* ==================== BUTTON RIPPLE EFFECT ==================== */
.btn,
.filter-btn,
.project-details-btn {
    position: relative;
    overflow: hidden;
}

.btn-ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    transform: scale(0);
    animation: rippleEffect 0.6s ease-out;
    pointer-events: none;
}

@keyframes rippleEffect {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* ==================== ENHANCED HOVER EFFECTS ==================== */
.nav-link {
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover::before,
.nav-link.active::before {
    transform: scaleX(1);
    transform-origin: left;
}

/* ==================== ANIMATED GRADIENT BACKGROUND ==================== */
.hero-particles {
    background: radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.15), transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(236, 72, 153, 0.12), transparent 50%),
                radial-gradient(circle at 40% 20%, rgba(20, 184, 166, 0.08), transparent 40%);
    background-size: 200% 200%;
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* ==================== FLOATING SHAPES ==================== */
.hero::before,
.hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    pointer-events: none;
}

.hero::before {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--primary-color), transparent);
    top: 10%;
    right: -100px;
    animation: floatShape 8s ease-in-out infinite;
}

.hero::after {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--secondary-color), transparent);
    bottom: 10%;
    left: -50px;
    animation: floatShape 10s ease-in-out infinite reverse;
}

@keyframes floatShape {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(20px, -20px) rotate(5deg); }
    50% { transform: translate(0, -40px) rotate(0deg); }
    75% { transform: translate(-20px, -20px) rotate(-5deg); }
}

/* ==================== ENHANCED CARD HOVER STATES ==================== */
.project-card {
    transform-style: preserve-3d;
    will-change: transform;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 15px;
    pointer-events: none;
    z-index: 0;
}

.project-card:hover::before {
    opacity: 1;
}

/* Glare effect from vanilla-tilt */
.project-card .js-tilt-glare {
    border-radius: 15px;
}

/* ==================== SKILL ITEM ENHANCEMENTS ==================== */
.skill-item {
    position: relative;
    will-change: transform;
    backface-visibility: hidden;
    overflow: hidden;
}

.skill-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.skill-item:hover::before {
    left: 100%;
}

/* ==================== AWARD CARD 3D EFFECT ==================== */
.award-card {
    transform-style: preserve-3d;
    perspective: 1000px;
}

.award-card:hover {
    animation: none;
}

.award-card:hover .award-icon {
    transform: translateZ(20px) rotateY(10deg);
}

.award-icon {
    transition: transform 0.4s ease;
    transform-style: preserve-3d;
}

/* ==================== FORM INPUT ANIMATIONS ==================== */
.form-group {
    position: relative;
}

.form-group input:focus,
.form-group textarea:focus {
    transform: translateY(-2px);
}

.form-group input:focus + .input-highlight,
.form-group textarea:focus + .input-highlight {
    width: 100%;
}

/* ==================== SECTION DIVIDERS ==================== */
.about::before,
.skills::before,
.projects::before,
.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.about,
.skills,
.projects,
.contact {
    position: relative;
}

/* ==================== GLOW EFFECTS ==================== */
.btn-primary:hover {
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.4),
                0 10px 40px rgba(0, 0, 0, 0.3);
}

.social-link:hover {
    box-shadow: 0 0 25px rgba(99, 102, 241, 0.5);
}

.featured-project {
    box-shadow: 0 0 40px rgba(20, 184, 166, 0.2),
                inset 0 0 60px rgba(20, 184, 166, 0.03);
}

/* ==================== SMOOTH TRANSITIONS FOR ALL ==================== */
* {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==================== REDUCED MOTION PREFERENCES ==================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .preloader {
        display: none !important;
    }
    
    body.loading > * {
        opacity: 1 !important;
    }
}

/* ==================== MOBILE OPTIMIZATIONS ==================== */
@media (max-width: 768px) {
    .hero::before,
    .hero::after {
        display: none;
    }
    
    .preloader-logo {
        font-size: 3.5rem;
    }
    
    .preloader-spinner {
        width: 60px;
        height: 60px;
    }
}

/* ==================== LOADING STATE ANIMATIONS ==================== */
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.loading-shimmer {
    background: linear-gradient(90deg, 
        var(--bg-card) 0%, 
        var(--bg-light) 50%, 
        var(--bg-card) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* ==================== ENHANCED MOBILE MENU ANIMATION ==================== */
@media (max-width: 768px) {
    .nav-menu {
        transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
                    opacity 0.3s ease;
    }
    
    .nav-menu.active {
        animation: slideInMenu 0.4s ease forwards;
    }
    
    .nav-menu.active .nav-link {
        animation: fadeInUp 0.4s ease forwards;
        opacity: 0;
    }
    
    .nav-menu.active li:nth-child(1) .nav-link { animation-delay: 0.1s; }
    .nav-menu.active li:nth-child(2) .nav-link { animation-delay: 0.15s; }
    .nav-menu.active li:nth-child(3) .nav-link { animation-delay: 0.2s; }
    .nav-menu.active li:nth-child(4) .nav-link { animation-delay: 0.25s; }
    .nav-menu.active li:nth-child(5) .nav-link { animation-delay: 0.3s; }
}

@keyframes slideInMenu {
    from {
        left: -100%;
        opacity: 0;
    }
    to {
        left: 0;
        opacity: 1;
    }
}

/* ==================== ENHANCED FILTER BUTTON ACTIVE STATE ==================== */
.filter-btn.active {
    position: relative;
    overflow: hidden;
}

.filter-btn.active::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: filterPulse 0.6s ease-out;
}

@keyframes filterPulse {
    to {
        width: 200%;
        height: 200%;
        opacity: 0;
    }
}

/* ==================== CONTACT FORM SUBMIT BUTTON LOADING STATE ==================== */
.btn.loading {
    pointer-events: none;
    position: relative;
    color: transparent;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 2px solid transparent;
    border-top-color: white;
    border-radius: 50%;
    animation: buttonSpinner 0.8s linear infinite;
}

@keyframes buttonSpinner {
    to { transform: rotate(360deg); }
}

/* ==================== ENHANCED SOCIAL LINK ANIMATIONS ==================== */
.social-link {
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.social-link:hover::before {
    opacity: 1;
}

.social-link i {
    transition: transform 0.3s ease;
}

.social-link:hover i {
    transform: scale(1.2) rotate(5deg);
}

/* ==================== PROJECT CARD IMAGE HOVER EFFECT ==================== */
.project-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
    pointer-events: none;
}

.project-card:hover .project-image::after {
    left: 100%;
}

/* ==================== TYPING CURSOR ENHANCEMENT ==================== */
.cursor {
    display: inline-block;
    animation: blink 0.7s infinite, cursorPulse 2s ease-in-out infinite;
}

@keyframes cursorPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* ==================== SCROLL INDICATOR ENHANCEMENT ==================== */
.scroll-indicator {
    opacity: 1;
    transition: opacity 0.3s ease;
}

.scroll-indicator.hidden {
    opacity: 0;
    pointer-events: none;
}

/* ==================== NAVBAR LOGO HOVER EFFECT ==================== */
.nav-logo {
    transition: transform 0.3s ease, filter 0.3s ease;
}

.nav-logo:hover {
    transform: scale(1.1);
    filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.5));
}