/* ==========================================================================
   Atal123.com — Premium Dark Theme
   Minimal · Fast · Accessible
   ========================================================================== */

/* ── Design Tokens ──────────────────────────────────────────────────────── */
:root {
    /* Core palette — deep near-black with a cool blue undertone (matches logo) */
    --bg:            #07090d;
    --bg-elevated:   #0d1119;
    --bg-card:       #0e131c;
    --bg-hover:      #14203080;
    --surface-line:  #1b2636;

    /* Text */
    --text:          #eaf2fb;
    --text-muted:    #9fb2c8;
    --text-dim:      #63748a;

    /* Accent — azure blue sampled from the Atal123 logo */
    --accent:        #38b6ff;
    --accent-bright: #7cd0ff;
    --accent-deep:   #1c8fe0;
    --accent-glow:   rgba(56, 182, 255, 0.40);
    --accent-soft:   rgba(56, 182, 255, 0.08);

    /* Frosted glass tokens */
    --glass-bg:      rgba(255, 255, 255, 0.045);
    --glass-bg-strong: rgba(18, 24, 34, 0.55);
    --glass-border:  rgba(255, 255, 255, 0.09);
    --glass-blur:    blur(20px) saturate(140%);
    --glass-shadow:  0 8px 32px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.08);

    /* Semantic */
    --success:       #34d399;
    --error:         #f87171;
    --warning:       #fbbf24;

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

    /* Spacing scale */
    --space-xs:  0.5rem;
    --space-sm:  1rem;
    --space-md:  1.5rem;
    --space-lg:  2.5rem;
    --space-xl:  4rem;
    --space-2xl: 6rem;

    /* Radii */
    --radius-sm: 8px;
    --radius:    14px;
    --radius-lg: 20px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow:    0 8px 30px rgba(0,0,0,0.4);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.5);

    /* Layout */
    --container: 1200px;
    --container-narrow: 780px;

    /* Motion */
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --transition: 0.35s var(--ease);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    scroll-padding-top: 90px;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Ambient background glow — cool azure mesh */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(720px 520px at 15% 0%, rgba(56, 182, 255, 0.16), transparent 60%),
        radial-gradient(720px 620px at 88% 18%, rgba(28, 143, 224, 0.13), transparent 60%),
        radial-gradient(520px 380px at 50% 100%, rgba(124, 208, 255, 0.08), transparent 70%);
    filter: blur(20px);
    z-index: -1;
    pointer-events: none;
}

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

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

h1, h2, h3, h4 {
    line-height: 1.15;
    font-weight: 700;
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 3vw, 1.75rem); }

p { color: var(--text-muted); }

::selection { background: var(--accent-glow); color: #fff; }

/* Focus states for accessibility */
:focus-visible {
    outline: 2px solid var(--accent-bright);
    outline-offset: 3px;
    border-radius: 4px;
}

/* ── Layout ─────────────────────────────────────────────────────────────── */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section {
    padding: var(--space-2xl) 0;
}

.section-narrow {
    max-width: var(--container-narrow);
    margin: 0 auto;
}

main { flex: 1 0 auto; }

/* ── Section headings ───────────────────────────────────────────────────── */
.eyebrow {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent-bright);
    margin-bottom: var(--space-sm);
}

.section-title {
    margin-bottom: var(--space-md);
}

.section-subtitle {
    max-width: 620px;
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: var(--space-lg);
}

/* ── Buttons ────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.85rem 1.6rem;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-sans);
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    line-height: 1;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-primary:hover {
    background: var(--accent-bright);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-ghost {
    background: var(--glass-bg);
    color: var(--text);
    border-color: var(--glass-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}
.btn-ghost:hover {
    border-color: rgba(56, 182, 255, 0.4);
    background: var(--accent-soft);
    transform: translateY(-2px);
}
.btn-primary {
    background: linear-gradient(120deg, var(--accent), var(--accent-deep));
    color: #04121f;
}
.btn-primary:hover {
    background: linear-gradient(120deg, var(--accent-bright), var(--accent));
    color: #04121f;
}

.btn-lg { padding: 1.05rem 2rem; font-size: 1rem; }

.btn svg { width: 18px; height: 18px; }

/* ── Header / Navigation ────────────────────────────────────────────────── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(18px) saturate(140%);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
    background: rgba(9, 12, 18, 0.55);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition), background var(--transition);
}
.site-header.scrolled {
    border-bottom-color: var(--glass-border);
    background: rgba(9, 12, 18, 0.72);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -0.03em;
}
.nav-logo .logo-mark {
    width: 34px;
    height: 34px;
    border-radius: 9px;
    background: linear-gradient(135deg, var(--accent), var(--accent-bright));
    display: grid;
    place-items: center;
    color: #fff;
    font-weight: 800;
    box-shadow: 0 4px 16px var(--accent-glow);
}
.nav-logo .accent { color: var(--accent-bright); }

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    list-style: none;
}
.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
    position: relative;
    transition: color 0.2s ease;
    padding: 0.3rem 0;
}
.nav-links a:hover,
.nav-links a.active { color: var(--text); }
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    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 { margin-left: var(--space-sm); }

/* Mobile menu toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 44px;
    height: 44px;
    padding: 10px;
    color: var(--text);
}
.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: currentColor;
    margin: 5px 0;
    transition: var(--transition);
    border-radius: 2px;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ───────────────────────────────────────────────────────────────── */
.hero {
    padding: var(--space-2xl) 0 var(--space-xl);
    position: relative;
}
.hero-inner {
    max-width: 820px;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.9rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: var(--glass-shadow);
}
.hero-badge .dot {
    width: 8px; height: 8px;
    background: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--success);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero h1 {
    margin-bottom: var(--space-md);
    background: linear-gradient(180deg, #fff 30%, var(--text-muted));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero h1 .accent {
    background: linear-gradient(135deg, var(--accent-bright), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-lead {
    font-size: clamp(1.05rem, 2vw, 1.3rem);
    color: var(--text-muted);
    max-width: 640px;
    margin-bottom: var(--space-lg);
}
.hero-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* ── Cards ──────────────────────────────────────────────────────────────── */
.card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: var(--glass-shadow);
}
.card:hover {
    border-color: rgba(56, 182, 255, 0.35);
    transform: translateY(-4px);
    box-shadow: 0 16px 50px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

/* ── Project grid ───────────────────────────────────────────────────────── */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--space-md);
}

.project-card {
    display: flex;
    flex-direction: column;
}
.project-card .thumb {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--bg-elevated);
    position: relative;
}
.project-card .thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease);
}
.project-card:hover .thumb img { transform: scale(1.06); }
.project-card .thumb-placeholder {
    width: 100%;
    height: 100%;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--bg-elevated), var(--bg-card));
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-size: 2rem;
}

.project-card .body {
    padding: var(--space-md);
    flex: 1;
    display: flex;
    flex-direction: column;
}
.project-card .category {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent-bright);
    margin-bottom: 0.5rem;
}
.project-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.6rem;
    transition: color 0.2s;
}
.project-card:hover h3 { color: var(--accent-bright); }
.project-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
    flex: 1;
}
.project-card .tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: auto;
}

/* ── Badges / tags ──────────────────────────────────────────────────────── */
.badge {
    display: inline-block;
    padding: 0.3rem 0.7rem;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    background: var(--bg-elevated);
    border: 1px solid var(--surface-line);
    border-radius: 6px;
    color: var(--text-muted);
}
.badge-accent {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent-bright);
}
.badge-featured {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    z-index: 2;
    background: var(--accent);
    color: #fff;
    border: none;
    box-shadow: 0 4px 12px var(--accent-glow);
}

/* ── Skills / Tech ──────────────────────────────────────────────────────── */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-md);
}
.skill-item {
    padding: var(--space-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    transition: var(--transition);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: var(--glass-shadow);
}
.skill-item:hover {
    border-color: rgba(56, 182, 255, 0.35);
    background: var(--accent-soft);
    transform: translateY(-3px);
}
.skill-item h4 {
    font-size: 1.05rem;
    margin-bottom: 0.6rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.skill-item .skill-icon {
    color: var(--accent-bright);
    width: 20px; height: 20px;
}
.skill-item p { font-size: 0.9rem; }

.tech-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}
.tech-cloud .badge {
    padding: 0.55rem 1.1rem;
    font-size: 0.9rem;
    transition: var(--transition);
}
.tech-cloud .badge:hover {
    border-color: var(--accent);
    color: var(--accent-bright);
    transform: translateY(-3px);
}

/* ── Experience timeline ────────────────────────────────────────────────── */
.timeline {
    position: relative;
    padding-left: var(--space-lg);
}
.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: var(--surface-line);
}
.timeline-item {
    position: relative;
    padding-bottom: var(--space-lg);
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--space-lg) + 1px);
    top: 6px;
    width: 14px; height: 14px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 4px var(--bg), 0 0 12px var(--accent-glow);
}
.timeline-item .period {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-bright);
    margin-bottom: 0.3rem;
}
.timeline-item h4 { font-size: 1.15rem; margin-bottom: 0.3rem; }
.timeline-item .company { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 0.5rem; }

/* ── CTA section ────────────────────────────────────────────────────────── */
.cta-box {
    text-align: center;
    padding: var(--space-2xl) var(--space-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: var(--glass-shadow);
}
.cta-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px; height: 400px;
    background: radial-gradient(circle, var(--accent-glow), transparent 65%);
    opacity: 0.3;
    filter: blur(60px);
}
.cta-box > * { position: relative; }
.cta-box h2 { margin-bottom: var(--space-sm); }
.cta-box p { max-width: 520px; margin: 0 auto var(--space-lg); }

/* ── Footer ─────────────────────────────────────────────────────────────── */
.site-footer {
    border-top: 1px solid var(--surface-line);
    padding: var(--space-xl) 0 var(--space-lg);
    margin-top: var(--space-2xl);
    flex-shrink: 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}
.footer-brand .nav-logo { margin-bottom: var(--space-sm); }
.footer-brand p { max-width: 320px; font-size: 0.95rem; }
.footer-col h5 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-dim);
    margin-bottom: var(--space-sm);
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.6rem; }
.footer-col a {
    color: var(--text-muted);
    font-size: 0.95rem;
    transition: color 0.2s;
}
.footer-col a:hover { color: var(--accent-bright); }

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--surface-line);
    flex-wrap: wrap;
    gap: var(--space-sm);
}
.footer-bottom p { font-size: 0.9rem; color: var(--text-dim); }
.social-links {
    display: flex;
    gap: var(--space-sm);
}
.social-links a {
    width: 40px; height: 40px;
    display: grid;
    place-items: center;
    border-radius: var(--radius-sm);
    border: 1px solid var(--surface-line);
    color: var(--text-muted);
    transition: var(--transition);
}
.social-links a:hover {
    border-color: var(--accent);
    color: var(--accent-bright);
    transform: translateY(-3px);
}
.social-links svg { width: 20px; height: 20px; }

/* ── Forms ──────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: var(--space-md); }
.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text);
}
.form-control {
    width: 100%;
    padding: 0.85rem 1rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}
.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}
.form-control::placeholder { color: var(--text-dim); }
textarea.form-control { resize: vertical; min-height: 140px; }
.form-hint { font-size: 0.85rem; color: var(--text-dim); margin-top: 0.4rem; }
.honeypot { position: absolute; left: -9999px; opacity: 0; }

/* ── Alerts ─────────────────────────────────────────────────────────────── */
.alert {
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
    border: 1px solid;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
}
.alert-success {
    background: rgba(52, 211, 153, 0.1);
    border-color: rgba(52, 211, 153, 0.3);
    color: var(--success);
}
.alert-error {
    background: rgba(248, 113, 113, 0.1);
    border-color: rgba(248, 113, 113, 0.3);
    color: var(--error);
}

/* ── Single project ─────────────────────────────────────────────────────── */
.project-hero {
    padding: var(--space-xl) 0 var(--space-lg);
}
.project-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
    padding: var(--space-md) 0;
    margin: var(--space-md) 0;
    border-top: 1px solid var(--surface-line);
    border-bottom: 1px solid var(--surface-line);
}
.project-meta .meta-item .label {
    font-size: 0.8rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}
.project-meta .meta-item .value {
    font-weight: 600;
    color: var(--text);
}
.project-featured-image {
    border-radius: var(--radius);
    overflow: hidden;
    margin: var(--space-lg) 0;
    border: 1px solid var(--surface-line);
}
.project-content {
    font-size: 1.05rem;
    line-height: 1.8;
}
.project-content p { color: var(--text); margin-bottom: var(--space-md); }
.project-content h2, .project-content h3 { margin: var(--space-lg) 0 var(--space-sm); }

/* Gallery */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-sm);
    margin: var(--space-lg) 0;
}
.gallery img {
    border-radius: var(--radius-sm);
    cursor: pointer;
    aspect-ratio: 4/3;
    object-fit: cover;
    border: 1px solid var(--surface-line);
    transition: var(--transition);
}
.gallery img:hover { border-color: var(--accent); transform: scale(1.02); }

/* Lightbox */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.92);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    cursor: zoom-out;
}
.lightbox.open { display: flex; animation: fadeIn 0.3s ease; }
.lightbox img {
    max-width: 90vw;
    max-height: 90vh;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}
.lightbox-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: none;
    border: none;
    color: #fff;
    font-size: 2rem;
    cursor: pointer;
    width: 48px; height: 48px;
}

/* ── Breadcrumbs ────────────────────────────────────────────────────────── */
.breadcrumbs {
    display: flex;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-dim);
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
}
.breadcrumbs a { color: var(--text-muted); transition: color 0.2s; }
.breadcrumbs a:hover { color: var(--accent-bright); }
.breadcrumbs .sep { color: var(--text-dim); }

/* ── Filter pills ───────────────────────────────────────────────────────── */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: var(--space-lg);
}
.filter-pill {
    padding: 0.55rem 1.1rem;
    border-radius: 100px;
    border: 1px solid var(--surface-line);
    background: transparent;
    color: var(--text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}
.filter-pill:hover,
.filter-pill.active {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--accent-bright);
}

/* ── Search ─────────────────────────────────────────────────────────────── */
.search-box {
    position: relative;
    max-width: 560px;
    margin: 0 auto var(--space-lg);
}
.search-box input {
    padding-left: 3rem;
}
.search-box svg {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 20px; height: 20px;
    color: var(--text-dim);
}

/* ── Empty state ────────────────────────────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: var(--space-2xl) var(--space-md);
    color: var(--text-muted);
}
.empty-state svg { width: 64px; height: 64px; color: var(--text-dim); margin: 0 auto var(--space-md); }

/* ── 404 ────────────────────────────────────────────────────────────────── */
.error-page {
    min-height: 60vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}
.error-page .code {
    font-size: clamp(6rem, 20vw, 12rem);
    font-weight: 800;
    line-height: 1;
    background: linear-gradient(135deg, var(--accent-bright), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--space-sm);
}

/* ── Stats row ──────────────────────────────────────────────────────────── */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--space-md);
    margin: var(--space-lg) 0;
}
.stat-item { text-align: center; }
.stat-item .num {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent-bright);
    line-height: 1;
}
.stat-item .label {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.4rem;
}

/* ── Pagination ─────────────────────────────────────────────────────────── */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: var(--space-xl);
    list-style: none;
}
.pagination a, .pagination span {
    display: grid;
    place-items: center;
    min-width: 42px;
    height: 42px;
    padding: 0 0.75rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--surface-line);
    color: var(--text-muted);
    transition: var(--transition);
}
.pagination a:hover { border-color: var(--accent); color: var(--accent-bright); }
.pagination .current {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

/* ── Animations ─────────────────────────────────────────────────────────── */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── Prose (privacy etc.) ───────────────────────────────────────────────── */
.prose { max-width: var(--container-narrow); }
.prose h2 { margin: var(--space-lg) 0 var(--space-sm); font-size: 1.6rem; }
.prose h3 { margin: var(--space-md) 0 var(--space-xs); }
.prose p { color: var(--text-muted); margin-bottom: var(--space-md); }
.prose ul { margin: 0 0 var(--space-md) var(--space-md); color: var(--text-muted); }
.prose li { margin-bottom: 0.5rem; }
.prose a { color: var(--accent-bright); text-decoration: underline; }

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
    .nav-toggle { display: block; }
    .nav-links {
        position: fixed;
        top: 72px;
        right: 0;
        z-index: 200;
        /* Explicit viewport height. The header's backdrop-filter makes it the
           containing block for this fixed panel, so `bottom:0` would resolve
           against the 72px header instead of the viewport and collapse the
           panel. Viewport units (vh/dvh) sidestep that entirely. */
        height: calc(100vh - 72px);
        height: calc(100dvh - 72px);
        width: min(320px, 82vw);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--space-lg);
        /* Near-opaque frosted panel — solid base for guaranteed readability,
           blur adds the frosted sheen where supported. */
        background: linear-gradient(180deg, rgba(16, 22, 32, 0.97), rgba(9, 12, 18, 0.98));
        backdrop-filter: blur(28px) saturate(150%);
        -webkit-backdrop-filter: blur(28px) saturate(150%);
        border-left: 1px solid var(--glass-border);
        box-shadow: -12px 0 40px rgba(0, 0, 0, 0.55);
        transform: translateX(100%);
        transition: transform var(--transition);
        gap: var(--space-md);
        overflow-y: auto;
    }
    .nav-links.open { transform: translateX(0); }
    .nav-cta { margin-left: 0; }

    .section { padding: var(--space-xl) 0; }
    .project-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .project-meta { gap: var(--space-md); }
    .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; justify-content: center; }
}

/* ── Reduced motion ─────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .reveal { opacity: 1; transform: none; }
}

/* ── Utilities ──────────────────────────────────────────────────────────── */
.text-center { text-align: center; }
.mt-lg { margin-top: var(--space-lg); }
.mb-0 { margin-bottom: 0; }
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}
.skip-link {
    position: absolute;
    top: -60px;
    left: var(--space-sm);
    background: var(--accent);
    color: #fff;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-sm);
    z-index: 200;
    transition: top 0.2s;
}
.skip-link:focus { top: var(--space-sm); }