:root {
    --bg: #0c0f14;
    --card: #121721;
    --border: #1f2633;
    --text: #e7ecf3;
    --muted: #9aa4b5;
    --accent: #65d6ff;
    --accent-2: #7f5af0;
    --shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    --radius: 14px;
    --badge-bg: #ffffff;
    --badge-text: #0c0f14;
}

[data-theme="light"] {
    --bg: #f6f7fb;
    --card: #ffffff;
    --border: #d8deea;
    --text: #0d1321;
    --muted: #4a5568;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    --badge-bg: #0d1321;
    --badge-text: #ffffff;
}

.fancy {
    font-family: 'Playfair Display', 'Cormorant Garamond', Georgia, serif;
    letter-spacing: 0.01em;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Poppins', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 10;
    backdrop-filter: blur(10px);
    background: rgba(12, 15, 20, 0.9);
    border-bottom: 1px solid var(--border);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    font-weight: 700;
    letter-spacing: -0.01em;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    font-weight: 500;
    color: var(--muted);
}

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

[data-theme="light"] .navbar {
    background: #ffffff;
    border-bottom: 1px solid var(--border);
}

[data-theme="light"] .nav-links {
    color: #2d3748;
}

[data-theme="light"] .nav-links a:hover,
[data-theme="light"] .nav-links a.active {
    color: #0d1321;
}

.theme-toggle {
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 12px;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.1s ease;
}

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

.hero {
    padding: 2.5rem 0 2.5rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    align-items: center;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.8rem;
    color: var(--muted);
}

h1 {
    font-size: clamp(2.2rem, 4vw, 2.8rem);
    margin: 0.6rem 0 0.8rem;
    font-family: 'Playfair Display', 'Cormorant Garamond', Georgia, serif;
}

.lead {
    color: var(--muted);
    font-size: 1.12rem;
    margin-bottom: 1rem;
}

.meta {
    color: var(--muted);
    margin: 0.5rem 0 1.3rem;
}

.cta-row {
    display: flex;
    flex-wrap: nowrap;
    gap: 0.6rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.65rem 1rem;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 600;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.2s ease, border-color 0.2s ease;
    white-space: nowrap;
}

.btn.primary {
    background: #ffffff;
    color: #0c0f14;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

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

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.hero-visual {
    display: flex;
    justify-content: center;
}

.photo-stack {
    position: relative;
    width: 300px;
    height: 220px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 10px;
}

.photo-card {
    position: relative;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.photo-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.tilt-1 { grid-column: 1 / 2; grid-row: 1 / 3; }
.tilt-2 { grid-column: 2 / 3; grid-row: 1 / 2; }
.tilt-3 { grid-column: 2 / 3; grid-row: 2 / 3; }

.section {
    padding: 3.5rem 0;
}

.section-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
    font-family: 'Playfair Display', 'Cormorant Garamond', Georgia, serif;
}

.section-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.inline-link {
    margin-top: 0.75rem;
}

.section-subtitle {
    margin: 2rem 0 0.8rem;
    color: var(--muted);
    font-weight: 600;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.4rem;
    box-shadow: var(--shadow);
}

.card-header {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-bottom: 0.8rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1rem;
}

.featured .project-card {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

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

.project-card p + p {
    margin-top: 0.4rem;
}

.small-card h5 {
    margin-bottom: 0.35rem;
}

.badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.badge {
    display: inline-flex;
    padding: 0.3rem 0.65rem;
    border-radius: 999px;
    background: var(--badge-bg);
    color: var(--badge-text);
    font-size: 0.85rem;
    border: 1px solid var(--border);
}

.link-row {
    display: flex;
    gap: 0.6rem;
    margin-top: 0.9rem;
}

ul {
    list-style: none;
    display: grid;
    gap: 0.45rem;
    color: var(--text);
}

ul li {
    padding-left: 1rem;
    position: relative;
}

ul li::before {
    content: "•";
    color: var(--accent);
    position: absolute;
    left: 0;
}

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

.project-groups {
    display: grid;
    gap: 2rem;
    margin-top: 1rem;
}

.project-group h4 {
    margin-bottom: 0.6rem;
}

.text-link {
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    margin-top: 0.35rem;
    font-weight: 600;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.2rem;
    margin-top: 1rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

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

.tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tab {
    background: #1a2130;
    color: var(--muted);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.8rem 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.tab.active {
    background: var(--card);
    color: var(--text);
    border-color: var(--accent);
}

[data-theme="light"] .tab {
    background: #eef2f7;
    color: #4a5568;
    border-color: #d0d6e2;
}

[data-theme="light"] .tab.active {
    background: #ffffff;
    color: #0d1321;
    border-color: var(--accent);
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.timeline {
    position: relative;
    padding-left: 1.5rem;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 10px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

.timeline-item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1rem;
    margin-bottom: 1.2rem;
}

.timeline-marker {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #0f141d;
    border: 2px solid var(--accent);
    display: grid;
    place-items: center;
    font-weight: 700;
    color: var(--text);
    box-shadow: var(--shadow);
}

.timeline-marker img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    display: block;
}

.timeline-content {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem 1.2rem;
    box-shadow: var(--shadow);
}

.timeline-meta {
    color: var(--muted);
    font-size: 0.9rem;
}

.project-thumb {
    width: 100%;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    background: #0f141d;
    height: 190px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

.placeholder-thumb {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted);
    font-weight: 600;
    text-align: center;
    padding: 1rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.04), rgba(0, 0, 0, 0.2));
}

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

.gradient-thumb {
    background: radial-gradient(circle at 20% 20%, rgba(101,214,255,0.35), transparent 50%), radial-gradient(circle at 80% 30%, rgba(127,90,240,0.35), transparent 55%), #0f141d;
}

.thumb-label {
    color: var(--text);
    font-weight: 700;
    letter-spacing: 0.02em;
}

footer {
    border-top: 1px solid var(--border);
    padding: 1.5rem 0;
    background: #05070c;
}

[data-theme="light"] footer {
    background: #e7ebf3;
    color: #1a202c;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    color: var(--muted);
}

.footer-links {
    display: flex;
    gap: 1rem;
}

@media (max-width: 900px) {
    .hero {
        padding-top: 3rem;
    }
}

@media (max-width: 640px) {
    .cta-row {
        flex-wrap: wrap;
    }
}

@media (max-width: 720px) {
    .nav-links {
        gap: 1rem;
        font-size: 0.95rem;
    }

    .section {
        padding: 3rem 0;
    }

    .timeline {
        padding-left: 0.8rem;
    }

    .timeline::before {
        left: 6px;
    }

    .timeline-item {
        grid-template-columns: 1fr;
        padding-left: 0.8rem;
    }

    .timeline-marker {
        width: 36px;
        height: 36px;
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
    }
}