/* ===== CSS Variables ===== */
:root {
    --white: #ffffff;
    --bg-light: #f8fafc;
    --text: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-light: #eff6ff;
    --accent-border: #bfdbfe;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
    --shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.1);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition: 0.3s ease;
    --dark-bg: #0f172a;
    --dark-bg-card: #1e293b;
    --dark-text: #f1f5f9;
    --dark-text-muted: #94a3b8;
}

/* ===== 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);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul {
    list-style: none;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 5rem 0;
}

.bg-light {
    background: var(--bg-light);
}

/* ===== Navigation ===== */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition), box-shadow var(--transition);
}

#navbar.scrolled {
    border-bottom-color: var(--border);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.02em;
    transition: color var(--transition);
}

.nav-logo:hover {
    color: var(--accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition);
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-cta {
    background: var(--accent) !important;
    color: var(--white) !important;
    padding: 0.5rem 1.25rem;
    border-radius: 6px;
    transition: background var(--transition) !important;
}

.nav-cta:hover {
    background: var(--accent-hover) !important;
}

.nav-cta::after {
    display: none !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero ===== */
#hero {
    padding: 10rem 0 6rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.hero-text {
    flex: 1;
}

.hero-label {
    font-size: 1rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 0.5rem;
    letter-spacing: 0.02em;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--text);
    margin-bottom: 0.75rem;
}

.hero-role {
    font-size: 1.35rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

.accent {
    color: var(--accent);
}

.hero-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 540px;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    transition: all var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--accent);
    color: var(--white);
    border-color: var(--accent);
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--text);
    border-color: var(--border);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-1px);
}

.hero-socials {
    display: flex;
    gap: 1rem;
}

.hero-socials a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.hero-socials a:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-light);
    transform: translateY(-2px);
}

.hero-image {
    flex-shrink: 0;
}

.hero-image-wrapper {
    width: 340px;
    height: 420px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 3px solid var(--white);
    outline: 1px solid var(--border);
}

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

/* ===== Section Header ===== */
.section-header {
    margin-bottom: 3rem;
}

.section-number {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

.section-number.light {
    color: var(--accent-border);
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.02em;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border);
    display: inline-block;
}

.section-dark .section-header h2 {
    color: var(--dark-text);
    border-bottom-color: var(--dark-bg-card);
}

/* ===== About ===== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.highlight-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
    transition: all var(--transition);
}

.highlight-card:hover {
    border-color: var(--accent-border);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.highlight-number {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: -0.02em;
    margin-bottom: 0.25rem;
}

.highlight-label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ===== Timeline (Experience / Research) ===== */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 5px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: var(--border);
}

.timeline-item {
    position: relative;
    margin-bottom: 2.5rem;
}

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

.timeline-marker {
    position: absolute;
    left: -2rem;
    top: 8px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent);
    border: 2px solid var(--white);
    box-shadow: 0 0 0 3px var(--accent-light);
    z-index: 1;
}

.bg-light .timeline-marker {
    border-color: var(--bg-light);
}

.timeline-content {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    transition: all var(--transition);
}

.bg-light .timeline-content {
    background: var(--white);
}

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

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    gap: 1rem;
}

.timeline-header h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text);
}

.company {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--accent);
    margin-top: 0.15rem;
}

.timeline-date {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    white-space: nowrap;
    background: var(--bg-light);
    padding: 0.3rem 0.75rem;
    border-radius: 20px;
    letter-spacing: 0.02em;
    flex-shrink: 0;
}

.timeline-points {
    list-style: none;
    margin-bottom: 1.25rem;
}

.timeline-points li {
    position: relative;
    padding-left: 1.25rem;
    margin-bottom: 0.75rem;
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.timeline-points li:last-child {
    margin-bottom: 0;
}

.timeline-points li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent);
}

.metric {
    font-weight: 700;
    color: var(--accent);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tags span {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent);
    background: var(--accent-light);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    letter-spacing: 0.01em;
}

/* ===== Projects ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.project-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    box-shadow: var(--shadow);
    border-color: var(--accent-border);
    transform: translateY(-3px);
}

.project-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}

.project-icon {
    color: var(--accent);
}

.project-link {
    color: var(--text-muted);
    transition: color var(--transition);
    padding: 4px;
}

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

.project-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.35rem;
    line-height: 1.4;
}

.project-meta {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.project-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0.75rem;
    flex: 1;
}

.project-result {
    font-size: 0.88rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 1rem;
    padding: 0.5rem 0.75rem;
    background: var(--accent-light);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--accent);
}

/* ===== Blog Section (Main Page) ===== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(480px, 1fr));
    gap: 1.5rem;
}

.blog-card {
    display: flex;
    flex-direction: column;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: all var(--transition);
    color: var(--text);
    text-decoration: none;
}

.blog-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-border);
    transform: translateY(-3px);
    color: var(--text);
}

.blog-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.blog-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-light);
    padding: 0.3rem 0.85rem;
    border-radius: 20px;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.blog-card-date {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
}

.blog-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1.4;
    margin-bottom: 0.75rem;
}

.blog-card-excerpt {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.25rem;
    flex: 1;
}

.blog-card .tech-tags {
    margin-bottom: 1.25rem;
}

.blog-card-read {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
    transition: gap var(--transition);
}

.blog-card:hover .blog-card-read {
    gap: 0.75rem;
}

/* ===== Blog Post Page ===== */
.blog-post {
    padding: 7rem 0 4rem;
}

.blog-post-container {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.blog-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    transition: color var(--transition), gap var(--transition);
}

.blog-back-link:hover {
    color: var(--accent);
    gap: 0.75rem;
}

.blog-post-header {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.blog-post-header .blog-tag {
    margin-bottom: 1rem;
}

.blog-post-header h1 {
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: 1rem;
}

.blog-post-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.88rem;
    color: var(--text-muted);
    font-weight: 400;
}

.blog-post-meta strong {
    color: var(--text-secondary);
}

.blog-post-divider {
    color: var(--border);
}

/* Blog Post Body */
.blog-post-body h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.blog-post-body p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.85;
    margin-bottom: 1rem;
}

.blog-lead {
    font-size: 1.1rem !important;
    color: var(--text) !important;
    line-height: 1.8 !important;
    margin-bottom: 1.5rem !important;
}

.blog-post-body code {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.88em;
    background: var(--accent-light);
    color: var(--accent);
    padding: 0.15em 0.45em;
    border-radius: 4px;
    font-weight: 500;
}

.blog-post-body ul {
    margin: 0.75rem 0 1rem 1.25rem;
    list-style: none;
}

.blog-post-body ul li {
    position: relative;
    padding-left: 1.25rem;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.blog-post-body ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}

/* Challenge Cards */
.blog-challenge {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
    margin-bottom: 1.25rem;
    padding: 1.25rem;
    background: var(--bg-light);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.blog-challenge-number {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border: 2px solid var(--accent-border);
    border-radius: 50%;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent);
}

.blog-challenge-content h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.35rem;
}

.blog-challenge-content p {
    font-size: 0.92rem;
    margin-bottom: 0;
}

/* Approach Cards */
.blog-approach {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
    margin-bottom: 1.25rem;
    padding: 1.25rem;
    background: var(--accent-light);
    border-radius: var(--radius);
    border: 1px solid var(--accent-border);
}

.blog-approach-number {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent);
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--white);
}

.blog-approach-content h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.35rem;
}

.blog-approach-content p {
    font-size: 0.92rem;
    margin-bottom: 0.5rem;
}

.blog-approach-content p:last-child {
    margin-bottom: 0;
}

.blog-approach-content ul {
    margin-top: 0.5rem;
}

/* Links Box */
.blog-links-box {
    margin-top: 2.5rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.blog-links-box h3 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 1rem;
}

.blog-links-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.blog-ext-link {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--accent);
    transition: gap var(--transition);
}

.blog-ext-link:hover {
    gap: 0.85rem;
    color: var(--accent-hover);
}

/* Blog Responsive */
@media (max-width: 640px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .blog-card {
        padding: 1.5rem;
    }

    .blog-post-header h1 {
        font-size: 1.65rem;
    }

    .blog-challenge,
    .blog-approach {
        flex-direction: column;
        gap: 0.75rem;
    }
}

/* ===== Skills ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.skill-category {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: all var(--transition);
}

.skill-category:hover {
    box-shadow: var(--shadow);
    border-color: var(--accent-border);
}

.skill-category h3 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 1rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tags span {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text);
    background: var(--bg-light);
    padding: 0.4rem 0.85rem;
    border-radius: 6px;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.skill-tags span:hover {
    border-color: var(--accent-border);
    background: var(--accent-light);
    color: var(--accent);
}

/* ===== Education ===== */
.education-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: all var(--transition);
}

.education-card:hover {
    box-shadow: var(--shadow);
    border-color: var(--accent-border);
}

.education-main {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    gap: 2rem;
}

.education-info h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.education-institution {
    font-size: 0.95rem;
    color: var(--accent);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.education-date {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.education-cgpa {
    text-align: center;
    flex-shrink: 0;
    background: var(--accent-light);
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--accent-border);
}

.cgpa-number {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.cgpa-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.education-extras {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.award-badge {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.92rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.award-badge svg {
    color: var(--accent);
    flex-shrink: 0;
}

/* ===== Contact ===== */
.section-dark {
    background: var(--dark-bg);
    color: var(--dark-text);
}

.contact-intro {
    font-size: 1.05rem;
    color: var(--dark-text-muted);
    max-width: 600px;
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.contact-card {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: var(--dark-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: all var(--transition);
    color: var(--dark-text);
}

.contact-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    color: var(--dark-text);
}

.contact-card svg {
    color: var(--accent);
}

.contact-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--dark-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.contact-value {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--dark-text);
    word-break: break-all;
}

/* ===== Footer ===== */
footer {
    background: var(--dark-bg);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 1.5rem 0;
}

.footer-container {
    text-align: center;
}

footer p {
    font-size: 0.8rem;
    color: var(--dark-text-muted);
}

/* ===== Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .hero-container {
        flex-direction: column-reverse;
        text-align: center;
        gap: 2.5rem;
    }

    .hero-text h1 {
        font-size: 2.75rem;
    }

    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }

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

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

    .hero-image-wrapper {
        width: 260px;
        height: 320px;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

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

    .education-main {
        flex-direction: column;
    }

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

@media (max-width: 640px) {
    #hero {
        padding: 8rem 0 4rem;
        min-height: auto;
    }

    .hero-text h1 {
        font-size: 2.25rem;
    }

    .hero-role {
        font-size: 1.1rem;
    }

    .section {
        padding: 3.5rem 0;
    }

    .section-header h2 {
        font-size: 1.5rem;
    }

    .timeline {
        padding-left: 1.5rem;
    }

    .timeline-marker {
        left: -1.5rem;
    }

    .timeline-header {
        flex-direction: column;
        gap: 0.5rem;
    }

    .timeline-content {
        padding: 1.25rem;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1.5rem;
        gap: 0;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: transform var(--transition), opacity var(--transition);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: 0.75rem 0;
        font-size: 1rem;
    }

    .nav-links a::after {
        display: none;
    }

    .nav-cta {
        text-align: center;
        margin-top: 0.5rem;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

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

    .highlight-card {
        padding: 1rem;
    }

    .highlight-number {
        font-size: 1.35rem;
    }

    .project-card {
        padding: 1.25rem;
    }

    .education-card {
        padding: 1.25rem;
    }
}