/* ============================================
   CSS Variables & Base Styles
   ============================================ */
:root {
    /* Colors - Dark Theme */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a24;
    --bg-card: #16161e;

    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;

    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-pink: #ec4899;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);

    --border-color: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.12);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --section-padding: 120px;
    --container-width: 1200px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --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(99, 102, 241, 0.15);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-secondary);
}

img {
    max-width: 100%;
    height: auto;
}

/* ============================================
   Container & Layout
   ============================================ */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: var(--section-padding) 0;
    position: relative;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all var(--transition-normal);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--accent-gradient);
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    color: white;
    text-decoration: none;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-logo:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
    color: white;
}

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

.nav-link {
    padding: 10px 18px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    position: relative;
    transition: background var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    transition: transform var(--transition-fast);
}

.hamburger::before { top: -7px; }
.hamburger::after { bottom: -7px; }

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 24px 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(139, 92, 246, 0.1), transparent),
        radial-gradient(ellipse 50% 30% at 20% 80%, rgba(168, 85, 247, 0.08), transparent);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black, transparent);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: var(--container-width);
    width: 100%;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 60px;
    align-items: center;
}

.hero-text {
    max-width: 700px;
}

.hero-greeting {
    font-size: 1.1rem;
    color: var(--accent-primary);
    font-weight: 500;
    margin-bottom: 16px;
    font-family: var(--font-mono);
}

.hero-name {
    font-size: clamp(2.5rem, 7vw, 5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff 0%, #a0a0b0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title {
    font-size: clamp(1.25rem, 3vw, 2rem);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 500px;
    margin-bottom: 32px;
}

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

.hero-social {
    display: flex;
    gap: 12px;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: all var(--transition-fast);
}

.social-link:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.2);
}

.social-icon-img {
    width: 1.1rem;
    height: 1.1rem;
    display: inline-block;
    vertical-align: middle;
    filter: grayscale(100%) brightness(0.7);
    opacity: 0.85;
    transition: all var(--transition-fast);
}

.social-link:hover .social-icon-img {
    filter: grayscale(0%) brightness(1.1);
    opacity: 1;
}

.hero-image {
    width: 350px;
    height: 350px;
}

.hero-image .image-wrapper {
    width: 100%;
    height: 100%;
    border-radius: 24px;
    overflow: hidden;
    border: 2px solid var(--border-light);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--text-muted);
    border-radius: 20px;
    position: relative;
}

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

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

@keyframes scroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(99, 102, 241, 0.4);
    color: white;
}

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

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

.btn-large {
    padding: 18px 40px;
    font-size: 1.05rem;
}

/* ============================================
   Section Titles
   ============================================ */
.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 60px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.title-number {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 500;
    color: var(--accent-primary);
}

.section-title::after {
    content: '';
    flex: 1;
    max-width: 300px;
    height: 1px;
    background: var(--border-color);
}

.subsection-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 60px 0 32px;
    color: var(--text-secondary);
}

/* ============================================
   About Section
   ============================================ */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
}

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

.about-text p {
    margin-bottom: 20px;
}

.about-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.info-item i {
    font-size: 1.25rem;
    color: var(--accent-primary);
    width: 24px;
}

.info-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.info-value {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
}

/* ============================================
   Skills Section
   ============================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.skill-category {
    padding: 32px;
    background: var(--bg-card);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

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

.category-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.category-title i {
    color: var(--accent-primary);
}

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

.skill-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
    text-decoration: none;
    cursor: pointer;
    --glow-color: #ec4899;
}

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

.skill-tag i {
    font-size: 1rem;
}

.skill-icon-img {
    width: 1rem;
    height: 1rem;
    display: inline-block;
    vertical-align: middle;
    filter: grayscale(100%) brightness(0.6);
    opacity: 1;
    transition: all var(--transition-fast);
}

/* Make all skill icons grayscale */
.skill-tag i {
    filter: grayscale(100%);
    opacity: 0.7;
    transition: all var(--transition-fast);
}

/* Brighten and glow on hover */
.skill-tag:hover .skill-icon-img {
    filter: grayscale(0%) brightness(1.1) drop-shadow(0 0 12px rgba(255, 255, 255, 0.8)) drop-shadow(0 0 20px rgba(255, 255, 255, 0.4));
    opacity: 1;
}

.skill-tag:hover i {
    color: var(--glow-color, var(--accent-pink));
    filter: grayscale(0%) drop-shadow(0 0 12px var(--glow-color)) drop-shadow(0 0 20px var(--glow-color));
    opacity: 1;
}

/* ============================================
   Timeline (Experience)
   ============================================ */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary));
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    padding-bottom: 48px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -40px;
    top: 8px;
    width: 16px;
    height: 16px;
    background: var(--bg-primary);
    border: 3px solid var(--accent-primary);
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.timeline-content {
    padding: 28px;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.timeline-content:hover {
    border-color: var(--border-light);
    transform: translateX(8px);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.timeline-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.timeline-company {
    font-size: 1rem;
    color: var(--accent-primary);
}

.timeline-company a {
    color: inherit;
}

.timeline-company a:hover {
    text-decoration: underline;
}

.timeline-date {
    font-size: 0.9rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.timeline-location {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.timeline-work-type {
    font-size: 0.9rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.timeline-work-type i {
    font-size: 0.85rem;
}

.timeline-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.timeline-description p {
    margin-bottom: 12px;
}

.timeline-description p:last-child {
    margin-bottom: 0;
}

.timeline-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.tech-tag {
    padding: 4px 12px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 6px;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--accent-primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition-fast);
    text-decoration: none;
}

a.tech-tag {
    color: var(--accent-primary) !important;
}

a.tech-tag:hover {
    color: var(--accent-primary) !important;
    background: rgba(99, 102, 241, 0.2);
    border-color: rgba(99, 102, 241, 0.4);
    cursor: pointer;
}

.tech-skill-link {
    text-decoration: none;
    color: var(--accent-primary);
}

.tech-skill-link:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: rgba(99, 102, 241, 0.4);
}

.tech-skill-icon {
    width: 0.8rem;
    height: 0.8rem;
    display: inline-block;
    vertical-align: middle;
    filter: grayscale(100%) brightness(0.7);
    opacity: 0.85;
}

/* ============================================
   Education Section
   ============================================ */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.education-card {
    display: flex;
    gap: 20px;
    padding: 28px;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

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

.education-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: 14px;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.education-content {
    flex: 1;
}

.education-degree {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.education-field {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.education-institution {
    font-size: 0.95rem;
    color: var(--accent-primary);
    margin-bottom: 4px;
}

.education-institution a {
    color: inherit;
}

.education-institution a:hover {
    text-decoration: underline;
}

.education-date {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.education-gpa {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.education-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 12px;
}

/* Certificates */
.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.certificate-card {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.certificate-card:hover {
    border-color: var(--border-light);
}

.certificate-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 10px;
    color: var(--accent-primary);
    flex-shrink: 0;
}

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

.certificate-issuer {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.certificate-date {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.certificate-link {
    font-size: 0.85rem;
    color: var(--accent-primary);
    margin-top: 8px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.certificate-link:hover {
    text-decoration: underline;
}

/* ============================================
   Projects Section
   ============================================ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}

.project-card {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.project-card-link {
    text-decoration: none;
    display: block;
}

.project-card:hover,
.project-card.reveal.active:hover {
    transform: translateY(-8px) scale(1.02) !important;
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg), 0 0 50px rgba(99, 102, 241, 0.3);
}

.project-image {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--bg-tertiary);
}

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

.project-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--text-muted);
    opacity: 0.3;
}

.project-content {
    padding: 24px;
}

.project-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.project-content a {
    color: inherit;
    text-decoration: none;
}

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

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.project-links {
    display: flex;
    gap: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.project-links a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

/* ============================================
   Project Detail Page
   ============================================ */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-primary);
    margin-bottom: 40px;
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: var(--accent-secondary);
}

.project-detail-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
    margin-bottom: 60px;
}

.project-detail-image {
    aspect-ratio: 16/9;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.project-detail-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-detail-info h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.project-detail-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
}

.project-detail-links {
    display: flex;
    gap: 16px;
}

.project-detail-content {
    display: grid;
    gap: 60px;
}

.project-description {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.project-technologies {
    padding: 32px;
    background: var(--bg-tertiary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.project-technologies h2 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

@media (max-width: 768px) {
    .project-detail-header {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .project-detail-info h1 {
        font-size: 2rem;
    }

    .project-detail-links {
        flex-wrap: wrap;
    }
}

/* ============================================
   Schedule Section
   ============================================ */
.schedule {
    background: var(--bg-secondary);
}

.schedule-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.schedule-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 48px;
}

.calendly-preview {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(99, 102, 241, 0.05) 100%);
    border: 2px solid rgba(99, 102, 241, 0.3);
    border-radius: 16px;
    overflow: hidden;
    padding: 40px;
}

.calendly-preview-header {
    margin-bottom: 32px;
    text-align: center;
}

.calendly-preview-header h3 {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.calendly-preview-header p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.meeting-option {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    background: rgba(99, 102, 241, 0.15);
    border: 2px solid rgba(99, 102, 241, 0.25);
    border-radius: 12px;
    transition: all var(--transition-fast);
}

.meeting-option:hover {
    background: rgba(99, 102, 241, 0.25);
    border-color: rgba(99, 102, 241, 0.5);
}

.meeting-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent-gradient);
    flex-shrink: 0;
}

.meeting-info {
    flex: 1;
    text-align: left;
}

.meeting-name {
    font-size: 1rem;
    color: var(--text-primary);
    margin: 0;
    font-weight: 600;
}

.meeting-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 4px 0 0 0;
}

.meeting-book {
    padding: 12px 24px;
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.meeting-book:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
}

.calendly-preview {
    margin-bottom: 40px;
}

.schedule-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.benefit-card {
    background: rgba(99, 102, 241, 0.15);
    border: 2px solid rgba(99, 102, 241, 0.25);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
    transition: all var(--transition-fast);
}

.benefit-card:hover {
    background: rgba(99, 102, 241, 0.25);
    border-color: rgba(99, 102, 241, 0.5);
    transform: translateY(-4px);
}

.benefit-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.benefit-card h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin: 0 0 8px 0;
}

.benefit-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0;
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    background: var(--bg-secondary);
}

.contact-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.contact-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 48px;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 48px;
}

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

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

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: 12px;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

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

.contact-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.contact-value {
    display: block;
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: 40px 0;
    background: var(--bg-primary);
    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-muted);
    font-size: 0.9rem;
}

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

.footer-links a {
    color: var(--text-muted);
    font-size: 1.1rem;
    transition: color var(--transition-fast);
}

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

/* ============================================
   Animations
   ============================================ */
.animate-fade-in {
    animation: fadeIn 0.8s ease forwards;
}

.animate-fade-in-up {
    animation: fadeInUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.1s; opacity: 0; }
.delay-2 { animation-delay: 0.2s; opacity: 0; }
.delay-3 { animation-delay: 0.3s; opacity: 0; }
.delay-4 { animation-delay: 0.4s; opacity: 0; }

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

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

/* Scroll animations */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease;
}

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

/* ============================================
   Empty State
   ============================================ */
.empty-message {
    text-align: center;
    color: var(--text-muted);
    font-style: italic;
    padding: 40px;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px dashed var(--border-color);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text {
        max-width: 100%;
    }

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

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

    .hero-image {
        display: none;
    }

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

}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 100px 24px 40px;
        transition: right var(--transition-normal);
        border-left: 1px solid var(--border-color);
    }

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

    .nav-toggle {
        display: block;
        z-index: 1001;
    }

    .nav-toggle.active .hamburger {
        background: transparent;
    }

    .nav-toggle.active .hamburger::before {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active .hamburger::after {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .nav-link {
        padding: 16px;
        font-size: 1.1rem;
    }

    .timeline {
        padding-left: 30px;
    }

    .timeline::before {
        left: 5px;
    }

    .timeline-marker {
        left: -30px;
        width: 12px;
        height: 12px;
    }

    .timeline-header {
        flex-direction: column;
        gap: 8px;
    }

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

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

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 16px 60px;
    }

    .container {
        padding: 0 16px;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

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

    .skill-category {
        padding: 24px;
    }

    .timeline-content {
        padding: 20px;
    }

    .education-card {
        flex-direction: column;
        text-align: center;
    }

    .education-icon {
        margin: 0 auto;
    }

    .contact-method {
        flex-direction: column;
        text-align: center;
    }

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