/* ── Design tokens ──────────────────────────────────────────────────────── */
:root {
    --bg: #0b0f19;
    --bg-elevated: #121826;
    --bg-card: #161d2e;
    --border: #232b3d;
    --text: #e7ebf3;
    --text-muted: #94a3b8;
    --text-faint: #64748b;
    --accent: #3b82f6;
    --accent-bright: #60a5fa;
    --accent-soft: rgba(59, 130, 246, 0.12);
    --success: #22c55e;
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --max-width: 1120px;
    --radius: 14px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.25rem; }

p { color: var(--text-muted); margin: 0 0 1em; }

a { color: var(--accent-bright); text-decoration: none; }
a:hover { text-decoration: underline; }

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

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

/* ── Nav ─────────────────────────────────────────────────────────────────── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(11, 15, 25, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 0;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text);
}

.nav-brand:hover { text-decoration: none; color: var(--text); }

.nav-brand .dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 12px var(--accent);
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.15s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text);
    text-decoration: none;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.6rem;
    cursor: pointer;
}

@media (max-width: 720px) {
    .nav-toggle { display: block; }
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: var(--bg-elevated);
        border-bottom: 1px solid var(--border);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.25s ease;
    }
    .nav-links.open { max-height: 320px; }
    .nav-links li { border-top: 1px solid var(--border); }
    .nav-links a { display: block; padding: 16px 24px; }
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: 1px solid transparent;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 8px 24px -8px rgba(59, 130, 246, 0.6);
}

.btn-primary:hover { background: var(--accent-bright); }

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

.btn-secondary:hover { border-color: var(--accent); color: var(--accent-bright); }

/* ── Hero ────────────────────────────────────────────────────────────────── */
.hero {
    padding: 96px 0 72px;
    text-align: center;
}

.eyebrow {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent-bright);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.hero p.lead {
    max-width: 620px;
    margin: 0 auto 32px;
    font-size: 1.15rem;
}

.hero-actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-screenshot {
    display: block;
    margin: 64px auto 0;
    max-width: 900px;
    width: 100%;
    height: auto;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.5);
}

/* ── Sections ────────────────────────────────────────────────────────────── */
section { padding: 72px 0; }

.section-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 48px;
}

.section-head p { margin-bottom: 0; }

/* ── Cards grid ──────────────────────────────────────────────────────────── */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: border-color 0.15s ease, transform 0.15s ease;
}

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

.card-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--accent-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 16px;
}

.card h3 { margin-bottom: 8px; }
.card p { margin-bottom: 0; font-size: 0.95rem; }

/* ── Portfolio image slot ────────────────────────────────────────────────── */
.image-slot {
    aspect-ratio: 16 / 10;
    border-radius: var(--radius) var(--radius) 0 0;
    border: 1px dashed var(--border);
    border-bottom: none;
    background: linear-gradient(160deg, var(--bg-elevated), var(--bg-card));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-faint);
    font-size: 0.85rem;
    gap: 6px;
    margin: -28px -28px 20px;
}

.image-slot .icon { font-size: 1.8rem; opacity: 0.6; }

/* ── Tag / badge ─────────────────────────────────────────────────────────── */
.tag {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 6px;
    background: var(--accent-soft);
    color: var(--accent-bright);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.tag.tag-muted {
    background: var(--bg-elevated);
    color: var(--text-faint);
}

/* ── Filter tabs (portfolio page) ───────────────────────────────────────── */
.filter-bar {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 8px 18px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
}

.filter-btn:hover { border-color: var(--accent); color: var(--text); }

.filter-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.empty-state {
    text-align: center;
    color: var(--text-faint);
    padding: 48px 0;
}

/* ── Stats row ───────────────────────────────────────────────────────────── */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 24px;
    text-align: center;
}

.stat-value {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--accent-bright);
}

.stat-label { color: var(--text-faint); font-size: 0.9rem; }

/* ── Two-column layout ───────────────────────────────────────────────────── */
.split {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
    align-items: center;
}

@media (max-width: 800px) {
    .split { grid-template-columns: 1fr; gap: 32px; }
}

/* ── Contact / about specifics ───────────────────────────────────────────── */
.avatar-slot {
    width: 220px;
    height: 220px;
    border-radius: 50%;
    border: 1px dashed var(--border);
    background: linear-gradient(160deg, var(--bg-elevated), var(--bg-card));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-faint);
    font-size: 0.85rem;
    flex-direction: column;
    gap: 6px;
    margin: 0 auto;
}

.avatar-photo {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    overflow: hidden;
    border: 1px solid var(--border);
    margin: 0 auto;
}

@media (max-width: 500px) {
    .avatar-photo { width: 120px; height: 120px; }
}

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

.contact-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.contact-list .contact-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--accent-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-list a { color: var(--text); font-weight: 500; }

/* ── CTA banner ──────────────────────────────────────────────────────────── */
.cta-banner {
    background: linear-gradient(135deg, var(--bg-elevated), var(--bg-card));
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 56px 40px;
    text-align: center;
}

.cta-banner h2 { margin-bottom: 12px; }
.cta-banner p { max-width: 480px; margin-left: auto; margin-right: auto; }

/* ── Footer ──────────────────────────────────────────────────────────────── */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 40px 0;
    margin-top: 40px;
}

.footer-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-links {
    display: flex;
    gap: 20px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links a { color: var(--text-faint); font-size: 0.9rem; }
.footer-links a:hover { color: var(--text); }

.footer-note { color: var(--text-faint); font-size: 0.85rem; }

/* ── Utility ─────────────────────────────────────────────────────────────── */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }