/* ============================================
   CHARAN KOPPURAVURI - PORTFOLIO STYLES
   ============================================ */

/* -------------------- CSS Variables -------------------- */
:root {
    /* Dark Theme (Default) */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: #16161f;
    --bg-card-hover: #1e1e2a;
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;
    
    --accent-primary: #f59e0b;
    --accent-secondary: #fbbf24;
    --accent-glow: rgba(245, 158, 11, 0.3);
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.12);
    
    --gradient-primary: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --gradient-hero: radial-gradient(ellipse at 50% 0%, rgba(245, 158, 11, 0.15) 0%, transparent 50%);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(245, 158, 11, 0.2);
    
    --font-primary: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    --nav-height: 80px;
    --container-max: 1200px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #fafafa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f5f5f5;
    --bg-card: #ffffff;
    --bg-card-hover: #f8f8f8;
    
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a5a;
    --text-muted: #8a8a9a;
    
    --accent-primary: #d97706;
    --accent-secondary: #f59e0b;
    --accent-glow: rgba(217, 119, 6, 0.2);
    
    --border-color: rgba(0, 0, 0, 0.08);
    --border-light: rgba(0, 0, 0, 0.12);
    
    --gradient-hero: radial-gradient(ellipse at 50% 0%, rgba(245, 158, 11, 0.1) 0%, transparent 50%);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 40px rgba(245, 158, 11, 0.15);
}

/* -------------------- Reset & Base -------------------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Snow Canvas */
#snow-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

/* -------------------- Utility Classes -------------------- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

.highlight {
    color: var(--accent-primary);
    position: relative;
}

/* Animation Classes */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* -------------------- Navigation -------------------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all var(--transition-base);
}

[data-theme="light"] .navbar {
    background: rgba(255, 255, 255, 0.9);
}

.nav-container {
    max-width: var(--container-max);
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    font-family: var(--font-mono);
    letter-spacing: -1px;
}

.logo-bracket {
    color: var(--accent-primary);
}

.nav-menu {
    display: flex;
    gap: 8px;
    list-style: none;
}

.nav-link {
    padding: 10px 18px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle {
    width: 44px;
    height: 44px;
    border: none;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    background: var(--bg-card-hover);
    color: var(--accent-primary);
}

.theme-toggle .fa-sun {
    display: none;
}

[data-theme="light"] .theme-toggle .fa-moon {
    display: none;
}

[data-theme="light"] .theme-toggle .fa-sun {
    display: block;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* -------------------- Hero Section -------------------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: calc(var(--nav-height) + 40px) 24px 60px;
    max-width: var(--container-max);
    margin: 0 auto;
    gap: 60px;
    position: relative;
    background: var(--gradient-hero);
}

.hero-content {
    flex: 1;
    max-width: 640px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px 8px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.2); }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 16px;
    letter-spacing: -2px;
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 20px;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 32px;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 36px;
}

.stat {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 4px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    font-family: var(--font-mono);
}

.stat-plus {
    font-size: 1.5rem;
    color: var(--accent-primary);
    font-weight: 600;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-left: 8px;
    line-height: 1.3;
}

/* Hero CTA */
.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #000;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px rgba(245, 158, 11, 0.4);
}

.btn-primary i {
    transition: transform var(--transition-fast);
}

.btn-primary:hover i {
    transform: translateX(4px);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-primary);
}

/* Hero Social */
.hero-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 1.25rem;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.social-link:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

/* Hero Visual */
.hero-visual {
    flex-shrink: 0;
}

.profile-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 32px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

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

.profile-image {
    position: relative;
    width: 140px !important;
    height: 140px !important;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--accent-primary);
    box-shadow: 0 0 20px var(--accent-glow);
}

.placeholder-avatar {
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: #000;
}

.avatar-img {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    object-position: center 20% !important;
    border-radius: 50% !important;
}

.status-indicator {
    position: absolute;
    bottom: 8px;
    right: 8px;
    width: 20px;
    height: 20px;
    background: #22c55e;
    border: 3px solid var(--bg-card);
    border-radius: 50%;
}

.profile-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.profile-info p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.profile-tags {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-top: 20px;
    flex-wrap: wrap;
}

.tag {
    padding: 6px 14px;
    background: var(--bg-tertiary);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
    font-size: 0.85rem;
    animation: bounce 2s ease-in-out infinite;
}

.mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 2px;
    position: absolute;
    left: 50%;
    top: 8px;
    transform: translateX(-50%);
    animation: scroll 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

@keyframes scroll {
    0%, 100% { opacity: 1; top: 8px; }
    50% { opacity: 0.3; top: 16px; }
}

/* -------------------- Section Base -------------------- */
.section {
    padding: 100px 0;
    position: relative;
    z-index: 2;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 8px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--accent-primary);
    font-weight: 500;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    letter-spacing: -1px;
}

/* -------------------- About Section -------------------- */
.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text .lead {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.highlight-item {
    display: flex;
    gap: 16px;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.highlight-item:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
}

.highlight-item i {
    font-size: 1.5rem;
    color: var(--accent-primary);
    flex-shrink: 0;
    margin-top: 4px;
}

.highlight-item h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.highlight-item p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
}

/* Interests Section */
.interests-section {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.interests-title {
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 32px;
    color: var(--text-primary);
}

.interests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.interest-item {
    display: flex;
    gap: 16px;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.interest-item:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
}

.interest-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--accent-primary);
    flex-shrink: 0;
}

.interest-content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.interest-content p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0;
}

/* -------------------- Experience Timeline -------------------- */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline-item {
    display: flex;
    gap: 24px;
    margin-bottom: 0;
}

.timeline-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
}

.marker-dot {
    width: 16px;
    height: 16px;
    background: var(--accent-primary);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--accent-glow);
    z-index: 1;
}

.marker-line {
    width: 2px;
    flex-grow: 1;
    background: linear-gradient(to bottom, var(--accent-primary), var(--border-color));
    margin-top: -2px;
}

.timeline-content {
    flex: 1;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    margin-bottom: 24px;
    transition: all var(--transition-base);
}

.timeline-content:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 16px;
}

.company-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.role {
    color: var(--accent-primary);
    font-weight: 500;
    font-size: 0.95rem;
}

.timeline-meta {
    display: flex;
    flex-direction: column;
    gap: 6px;
    text-align: right;
}

.timeline-meta span {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--text-muted);
    justify-content: flex-end;
}

.timeline-meta i {
    color: var(--accent-primary);
    font-size: 0.8rem;
}

.timeline-summary {
    font-size: 1rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 16px;
    padding-left: 16px;
    border-left: 3px solid var(--accent-primary);
    line-height: 1.6;
}

.timeline-details {
    list-style: none;
    margin-bottom: 16px;
}

.timeline-details li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.timeline-details li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
}

.timeline-details strong {
    color: var(--text-primary);
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.timeline-tags span {
    padding: 5px 12px;
    background: var(--bg-tertiary);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Timeline Subroles */
.timeline-subrole {
    margin-bottom: 24px;
    padding: 20px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--accent-primary);
}

.timeline-subrole:last-of-type {
    margin-bottom: 16px;
}

.subrole-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 8px;
}

.subrole-title {
    font-weight: 600;
    color: var(--accent-primary);
    font-size: 0.95rem;
}

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

.timeline-subrole .timeline-details {
    margin-bottom: 0;
}

/* Education Cards */
.education-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.education-card {
    display: flex;
    gap: 24px;
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.education-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
}

.edu-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #000;
    flex-shrink: 0;
}

.edu-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.edu-degree {
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.edu-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.edu-meta span {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.edu-meta i {
    color: var(--accent-primary);
}

/* -------------------- Skills Section -------------------- */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.skill-category {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all var(--transition-base);
}

.skill-category:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 20px;
}

.category-header i {
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.category-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

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

.skill-tag {
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    cursor: default;
}

.skill-tag:hover {
    background: var(--accent-primary);
    color: #000;
    border-color: var(--accent-primary);
}

/* -------------------- Projects Section -------------------- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.project-card.featured {
    grid-column: span 2;
}

.project-image {
    position: relative;
    height: 200px;
    background: var(--bg-tertiary);
    overflow: hidden;
}

.project-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--accent-primary);
    opacity: 0.3;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
}

.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;
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.project-link {
    width: 56px;
    height: 56px;
    background: var(--accent-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #000;
    font-size: 1.5rem;
    text-decoration: none;
    transform: scale(0.8);
    transition: all var(--transition-base);
}

.project-card:hover .project-link {
    transform: scale(1);
}

.project-link:hover {
    transform: scale(1.1);
}

.project-content {
    padding: 24px;
}

.project-meta {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

.project-type {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--accent-primary);
}

.project-year {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.project-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.project-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

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

.project-tech span {
    padding: 4px 12px;
    background: var(--bg-tertiary);
    border-radius: 50px;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* -------------------- Achievements Section -------------------- */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}

.achievement-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all var(--transition-base);
}

.achievement-card:hover {
    border-color: var(--accent-primary);
    transform: translateX(8px);
}

.achievement-icon {
    width: 50px;
    height: 50px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--accent-primary);
    flex-shrink: 0;
}

.achievement-icon.stanford { color: #8b0000; }
.achievement-icon.microsoft { color: #00a4ef; }
.achievement-icon.hackerrank { color: #00ea64; }

.achievement-content {
    flex: 1;
}

.achievement-content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.achievement-content p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.achievement-link {
    color: var(--text-muted);
    font-size: 0.875rem;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.achievement-card:hover .achievement-link {
    opacity: 1;
    color: var(--accent-primary);
}

/* -------------------- Contact Section -------------------- */
.contact-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.contact-intro {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .contact-methods {
        grid-template-columns: 1fr;
    }
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all var(--transition-base);
}

.contact-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: #000;
    flex-shrink: 0;
}

.contact-icon.linkedin { background: #0077b5; color: #fff; }
.contact-icon.github { background: #333; color: #fff; }
.contact-icon.location { background: var(--bg-tertiary); color: var(--accent-primary); }

.contact-info {
    text-align: left;
}

.contact-info h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.contact-info p {
    font-size: 0.85rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.contact-detail {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    opacity: 0.6;
    margin-top: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 180px;
}

.contact-link-icon {
    color: var(--text-muted);
    font-size: 0.85rem;
    opacity: 0.5;
    transition: all var(--transition-fast);
    margin-left: auto;
}

.contact-card:hover .contact-link-icon {
    opacity: 1;
    color: var(--accent-primary);
}

/* -------------------- Footer -------------------- */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    margin-bottom: 40px;
}

.footer-logo {
    font-size: 1.75rem;
    font-weight: 700;
    font-family: var(--font-mono);
}

.footer-text {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 1.1rem;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--accent-primary);
    color: #000;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* -------------------- Responsive Design -------------------- */
@media (max-width: 1024px) {
    .project-card.featured {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    :root {
        --nav-height: 70px;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 20px;
        gap: 4px;
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    
    .nav-link {
        padding: 14px 20px;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: calc(var(--nav-height) + 60px);
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-social {
        justify-content: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .scroll-indicator {
        display: none;
    }
    
    .timeline-item {
        flex-direction: column;
        gap: 0;
    }
    
    .timeline-marker {
        flex-direction: row;
        margin-bottom: 12px;
    }
    
    .marker-line {
        width: auto;
        height: 2px;
        flex-grow: 1;
        margin-left: -2px;
        margin-top: 0;
    }
    
    .timeline-header {
        flex-direction: column;
    }
    
    .timeline-meta {
        text-align: left;
    }
    
    .timeline-meta span {
        justify-content: flex-start;
    }
    
    .education-cards {
        grid-template-columns: 1fr;
    }
    
    .education-card {
        flex-direction: column;
        text-align: center;
    }
    
    .edu-meta {
        justify-content: center;
    }
    
    .subrole-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
        align-items: center;
    }
    
    .stat {
        text-align: center;
    }
    
    .stat-label {
        margin-left: 0;
        margin-top: 4px;
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .about-highlights {
        grid-template-columns: 1fr;
    }
    
    .achievements-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-methods {
        grid-template-columns: 1fr;
    }
}

/* -------------------- Reduced Motion -------------------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}