/* ============================================================
   Rahul Sharma — Consulting Portfolio
   Light theme · Warm parchment · Burnt orange accent
   Color research: Hermès, Kinfolk, premium architecture firms
   ============================================================ */

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

:root {
    /* Warm paper palette */
    --bg:             #F8F6F1;
    --bg-alt:         #F1EEE7;
    --card:           #FFFFFF;
    --border:         #E8E5DF;
    --border-hover:   #D4D0C8;

    /* Warm stone text hierarchy */
    --ink:            #1C1917;
    --ink-secondary:  #57534E;
    --ink-tertiary:   #A8A29E;
    --ink-faint:      #D6D3D1;

    /* Accent — burnt orange / rust */
    --accent:         #9A3412;
    --accent-hover:   #7C2D12;
    --accent-light:   #FFF7ED;

    --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --mono: 'JetBrains Mono', 'SF Mono', monospace;
}

html { scroll-behavior: smooth; scroll-padding-top: 5rem; -webkit-font-smoothing: antialiased; }
body { font-family: var(--sans); font-size: 1rem; line-height: 1.7; color: var(--ink); background: var(--bg); }
::selection { background: rgba(154, 52, 18, 0.12); color: var(--ink); }
a { color: inherit; text-decoration: none; transition: color 0.2s, opacity 0.2s; }
a:hover { opacity: 0.7; }
ul { list-style: none; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 2rem; }

/* ─── Navigation ─── */
nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 200;
    display: flex; justify-content: space-between; align-items: center;
    padding: 1rem 2.5rem;
    background: transparent;
    transition: background 0.35s, border-color 0.35s, box-shadow 0.35s;
    border-bottom: 1px solid transparent;
}
nav.scrolled {
    background: rgba(248, 246, 241, 0.92);
    backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    border-bottom-color: var(--border);
    box-shadow: 0 1px 3px rgba(28, 25, 23, 0.04);
}
.nav-name { font-weight: 700; font-size: 0.875rem; color: var(--ink); letter-spacing: 0.01em; }
.nav-links { display: flex; gap: 2rem; }
.nav-links a { font-size: 0.8125rem; font-weight: 500; color: var(--ink-tertiary); transition: color 0.2s; }
.nav-links a:hover { color: var(--ink); opacity: 1; }

/* ─── Hero ─── */
header {
    min-height: 100vh;
    display: flex; align-items: center;
    padding: 8rem 0 4rem;
    background: var(--bg);
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 4rem;
    align-items: center;
}
.hero-text { max-width: 460px; }

h1 {
    font-size: clamp(3rem, 7vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.0;
    color: var(--ink);
}
.hero-rule {
    border: none; height: 3px; width: 48px;
    background: var(--accent);
    margin: 1.5rem 0;
    border-radius: 2px;
}
.hero-tagline {
    font-size: 1.125rem; font-weight: 500;
    color: var(--ink-secondary);
    margin-bottom: 1.25rem;
}
.hero-desc {
    font-size: 1rem; color: var(--ink-secondary);
    line-height: 1.75; margin-bottom: 2rem;
}
.hero-badges { display: flex; flex-wrap: wrap; gap: 0.625rem; margin-bottom: 2.5rem; }
.badge {
    padding: 0.375rem 0.875rem;
    border: 1px solid var(--border-hover);
    border-radius: 100px;
    font-family: var(--mono); font-size: 0.75rem;
    color: var(--ink-secondary);
    background: var(--card);
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn-primary {
    display: inline-flex; align-items: center;
    padding: 0.65rem 1.5rem;
    background: var(--accent); color: #fff;
    font-weight: 600; font-size: 0.875rem;
    border-radius: 8px;
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(154,52,18,0.18); opacity: 1; }
.btn-ghost {
    display: inline-flex; align-items: center;
    padding: 0.65rem 1.5rem;
    border: 1px solid var(--border-hover); color: var(--ink-secondary);
    font-weight: 500; font-size: 0.875rem;
    border-radius: 8px;
    transition: border-color 0.2s, color 0.2s;
}
.btn-ghost:hover { border-color: var(--ink-secondary); color: var(--ink); opacity: 1; }

/* Hero entrance */
@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: translateY(0); } }
.hero-text > * { animation: fadeUp 0.7s ease both; }
.hero-text > *:nth-child(1) { animation-delay: 0s; }
.hero-text > *:nth-child(2) { animation-delay: 0.06s; }
.hero-text > *:nth-child(3) { animation-delay: 0.12s; }
.hero-text > *:nth-child(4) { animation-delay: 0.18s; }
.hero-text > *:nth-child(5) { animation-delay: 0.24s; }
.hero-text > *:nth-child(6) { animation-delay: 0.30s; }
.hero-visual { animation: fadeUp 0.8s ease 0.15s both; }

/* ─── Hero Browser Mockup ─── */
.hero-visual { position: relative; }
.mockup-browser {
    border-radius: 12px; overflow: hidden;
    background: #1a1a22;
    border: 1px solid var(--border-hover);
    box-shadow: 0 24px 64px rgba(28,25,23,0.12), 0 4px 12px rgba(28,25,23,0.06);
}
.browser-chrome {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 14px;
    background: #ECEAE4;
    border-bottom: 1px solid var(--border);
}
.browser-dots { display: flex; gap: 6px; }
.browser-dots span { width: 10px; height: 10px; border-radius: 50%; }
.browser-dots span:nth-child(1) { background: #ff5f57; }
.browser-dots span:nth-child(2) { background: #febc2e; }
.browser-dots span:nth-child(3) { background: #28c840; }
.browser-url {
    flex: 1; font-family: var(--mono); font-size: 0.6875rem;
    color: var(--ink-tertiary);
    background: rgba(0,0,0,0.04); padding: 4px 10px; border-radius: 6px;
}
.browser-body { padding: 1.25rem; }

/* INX Slide in mockup — stays dark (it's a video player) */
.inx-slide {
    background: linear-gradient(160deg, #12121e, #1a1228);
    border-radius: 8px; padding: 1.25rem 1.5rem;
    min-height: 250px;
    display: flex; flex-direction: column; justify-content: space-between;
}
.slide-label { font-size: 0.625rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.08em; color: rgba(255,255,255,0.3); margin-bottom: 0.375rem; }
.slide-heading { font-size: 1.125rem; font-weight: 700; color: white; margin-bottom: 1rem; letter-spacing: -0.01em; }
/* Dashboard mockup inside hero slide */
.slide-dashboard { display: flex; gap: 0.75rem; margin-bottom: 1.25rem; align-items: flex-end; }
.dash-metric {
    flex: 1; padding: 0.625rem 0.75rem;
    background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.06);
    border-radius: 8px;
}
.dash-value { font-size: 1.125rem; font-weight: 700; color: white; letter-spacing: -0.02em; }
.dash-label { font-size: 0.5625rem; color: rgba(255,255,255,0.4); margin-top: 0.125rem; }
.dash-change { font-size: 0.625rem; font-weight: 600; margin-top: 0.25rem; }
.dash-change.up { color: #4ade80; }
.dash-change.up::before { content: "\25B2 "; font-size: 0.5rem; }
.dash-chart {
    flex: 1.5; display: flex; align-items: flex-end; gap: 4px;
    padding: 0.625rem 0.75rem; height: 80px;
    background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.06);
    border-radius: 8px;
}
.spark-bar {
    flex: 1; background: rgba(120,107,245,0.35); border-radius: 3px 3px 0 0;
    transition: background 0.3s;
}
.spark-bar.active { background: #7c6bf5; }

.slide-audio { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.75rem; }
.audio-bars { display: flex; gap: 2px; align-items: flex-end; height: 14px; }
.audio-bars span { width: 2.5px; border-radius: 1px; background: #4ade80; animation: audioWave 1.2s ease-in-out infinite; }
.audio-bars span:nth-child(1) { height: 5px; animation-delay: 0s; }
.audio-bars span:nth-child(2) { height: 10px; animation-delay: 0.1s; }
.audio-bars span:nth-child(3) { height: 7px; animation-delay: 0.2s; }
.audio-bars span:nth-child(4) { height: 13px; animation-delay: 0.3s; }
.audio-bars span:nth-child(5) { height: 6px; animation-delay: 0.15s; }
.audio-bars span:nth-child(6) { height: 11px; animation-delay: 0.25s; }
.audio-bars span:nth-child(7) { height: 4px; animation-delay: 0.35s; }
@keyframes audioWave { 0%, 100% { transform: scaleY(0.5); } 50% { transform: scaleY(1); } }
.audio-script { font-size: 0.6875rem; font-style: italic; color: rgba(255,255,255,0.3); }

.slide-timeline { display: flex; align-items: center; gap: 0.625rem; }
.timeline-track { flex: 1; height: 3px; background: rgba(255,255,255,0.08); border-radius: 2px; overflow: hidden; }
.timeline-fill { width: 60%; height: 100%; background: linear-gradient(90deg, #7c6bf5, #a78bfa); border-radius: 2px; animation: progressFill 8s linear infinite; }
@keyframes progressFill { 0% { width: 40%; } 100% { width: 80%; } }
.timeline-time { font-family: var(--mono); font-size: 0.625rem; color: rgba(255,255,255,0.25); white-space: nowrap; }

/* Warm shadow under browser */
.mockup-shadow {
    position: absolute; bottom: -20px; left: 12%; right: 12%; height: 40px;
    background: radial-gradient(ellipse, rgba(154,52,18,0.07), transparent 70%);
    filter: blur(16px); pointer-events: none;
}
@keyframes heroFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
.hero-visual { animation: heroFloat 6s ease-in-out infinite, fadeUp 0.8s ease 0.15s both; }

/* ─── Stats ─── */
#stats {
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 3rem 0;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
.stat { text-align: center; }
.stat-num {
    display: block;
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800; letter-spacing: -0.03em;
    color: var(--ink); line-height: 1.2;
}
.stat-label { display: block; font-size: 0.75rem; color: var(--ink-tertiary); margin-top: 0.375rem; line-height: 1.4; }

/* ─── Section Label ─── */
.section-label {
    font-size: 0.6875rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.12em;
    color: var(--accent);
    margin-bottom: 2.5rem;
}

/* ─── Work: Bento Grid ─── */
#work { padding: 6rem 0; }
.bento-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.bento-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px; overflow: hidden;
    transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.bento-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(28,25,23,0.08);
}
.bento-wide { grid-column: span 2; }

.card-visual { padding: 1.5rem; min-height: 200px; display: flex; align-items: center; justify-content: center; overflow: hidden; background: var(--bg-alt); }
.card-body { padding: 1.25rem 1.5rem 1.5rem; }
.card-tag {
    display: inline-block; font-family: var(--mono);
    font-size: 0.6875rem; color: var(--ink-tertiary);
    margin-bottom: 0.5rem; letter-spacing: 0.02em;
}
.card-body h3 {
    font-size: 1.125rem; font-weight: 700;
    color: var(--ink); letter-spacing: -0.01em;
    margin-bottom: 0.625rem; line-height: 1.3;
}
.card-body p { font-size: 0.875rem; color: var(--ink-secondary); line-height: 1.65; margin-bottom: 0.75rem; }
.card-tech { font-family: var(--mono); font-size: 0.6875rem; color: var(--ink-tertiary); line-height: 1.8; margin-bottom: 0.75rem; }
.card-link { font-size: 0.8125rem; font-weight: 600; color: var(--accent); }
.card-link:hover { opacity: 0.8; }

/* ─── INX Multi-Slide Mockup ─── */
/* INX 6-problems grid */
.inx-problems {
    display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; width: 100%;
}
.problem-item {
    display: flex; align-items: center; gap: 0.625rem;
    padding: 0.625rem 0.75rem;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 8px;
}
.problem-num {
    font-family: var(--mono); font-size: 0.6875rem; font-weight: 500;
    color: #7c6bf5; min-width: 1.25rem;
}
.problem-text {
    font-size: 0.75rem; font-weight: 500; color: rgba(255,255,255,0.7);
    line-height: 1.3;
}

/* "Made with" examples links */
.card-examples {
    display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem;
    margin-top: 0.75rem; padding-top: 0.75rem;
    border-top: 1px solid var(--border);
}
.examples-label {
    font-size: 0.75rem; font-weight: 500; color: var(--ink-tertiary);
    margin-right: 0.25rem;
}
.card-examples a {
    font-size: 0.75rem; font-weight: 500; color: var(--ink-secondary);
    text-decoration: underline; text-underline-offset: 3px;
    transition: color 0.2s;
}
.card-examples a:hover { color: var(--accent); }

/* ─── Nova Grid Mockup ─── */
.nova-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; width: 100%; }
.nova-img { aspect-ratio: 1; border-radius: 8px; }
.nova-video { display: flex; align-items: center; justify-content: center; }
.play-icon {
    width: 28px; height: 28px; background: rgba(255,255,255,0.2);
    border-radius: 50%; position: relative;
}
.play-icon::after {
    content: ''; position: absolute; top: 50%; left: 54%;
    transform: translate(-50%,-50%);
    border-left: 10px solid rgba(255,255,255,0.7);
    border-top: 6px solid transparent; border-bottom: 6px solid transparent;
}

/* ─── Papers Mockup ─── */
.visual-papers { background: var(--bg-alt); }
.papers-stack { position: relative; width: 100%; height: 200px; }
.paper {
    position: absolute; width: 72%; padding: 12px;
    background: #fff; border-radius: 3px;
    border: 1px solid var(--border);
    box-shadow: 0 2px 12px rgba(28,25,23,0.08);
}
.paper-3 { top: 0; left: 2%; transform: rotate(-2deg); z-index: 1; }
.paper-2 { top: 14px; left: 16%; transform: rotate(1deg); z-index: 2; }
.paper-1 { top: 26px; left: 10%; transform: rotate(-0.5deg); z-index: 3; }
.paper-titlebar { height: 7px; width: 85%; background: var(--ink); border-radius: 2px; margin-bottom: 4px; }
.paper-authors { height: 4px; width: 55%; background: var(--ink-tertiary); border-radius: 2px; margin-bottom: 10px; }
.paper-body-lines div { height: 3px; background: var(--ink-faint); border-radius: 1px; margin-bottom: 3px; }
.paper-body-lines div:last-child { width: 60%; }
.paper-figure { display: flex; gap: 6px; margin-top: 8px; }
.pf-box { flex: 1; height: 26px; background: var(--bg-alt); border-radius: 2px; border: 1px solid var(--border); }

/* ─── Terminal Mockup ─── */
.mockup-terminal {
    border-radius: 10px; overflow: hidden;
    background: #0d1117;
    border: 1px solid var(--border);
    width: 100%;
    box-shadow: 0 8px 32px rgba(28,25,23,0.1);
}
.terminal-chrome {
    display: flex; align-items: center; gap: 12px;
    padding: 8px 14px; background: #161b22;
    border-bottom: 1px solid rgba(255,255,255,0.04);
}
.terminal-chrome .browser-chrome { background: transparent; padding: 0; border: none; }
.terminal-title { font-family: var(--mono); font-size: 0.625rem; color: #484f58; }
.terminal-body { padding: 1rem 1.25rem; font-family: var(--mono); font-size: 0.75rem; line-height: 1.8; color: #c9d1d9; }
.t-line { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.t-gap { height: 0.5rem; }
.t-prompt { color: #7ee787; margin-right: 0.5rem; }
.t-ok { color: #7ee787; margin-right: 0.375rem; }
.t-str { color: #a5d6ff; }
.t-val { color: #d2a8ff; }
.t-dim { color: #484f58; }
.t-bar { color: #7c6bf5; letter-spacing: -1px; }
.t-url { color: #79c0ff; text-decoration: underline; }
.t-arrow { color: #f97316; }
.t-cursor {
    display: inline-block; width: 6px; height: 13px;
    background: #c9d1d9; vertical-align: text-bottom;
    animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ─── Services ─── */
#services { padding: 6rem 0; border-top: 1px solid var(--border); }
.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.svc-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1.75rem;
    border-top: 3px solid var(--accent, var(--border));
    transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.svc-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(28,25,23,0.06);
    border-color: var(--border-hover);
    border-top-color: var(--accent);
}
.svc-wide { grid-column: 1 / -1; }
.svc-icon { width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; margin-bottom: 1.25rem; }

/* Service icons — using --accent from inline style */
.icon-nodes { position: relative; width: 40px; height: 40px; }
.icon-nodes span { position: absolute; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.icon-nodes span:nth-child(1) { top: 4px; left: 2px; }
.icon-nodes span:nth-child(2) { bottom: 4px; left: 2px; }
.icon-nodes span:nth-child(3) { top: 50%; right: 2px; transform: translateY(-50%); }
.icon-nodes svg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; stroke: var(--accent); stroke-width: 1; opacity: 0.35; }

.icon-media { display: flex; gap: 3px; }
.icon-media div { width: 12px; border-radius: 3px; background: var(--accent); }
.icon-media div:nth-child(1) { height: 14px; transform: rotate(-5deg); opacity: 0.3; }
.icon-media div:nth-child(2) { height: 20px; opacity: 0.6; }
.icon-media div:nth-child(3) { height: 14px; transform: rotate(5deg); opacity: 0.3; }

.icon-product { width: 36px; }
.ip-bar { height: 6px; background: var(--accent); border-radius: 2px 2px 0 0; opacity: 0.5; }
.ip-body { display: flex; gap: 3px; padding: 3px; background: var(--bg-alt); border-radius: 0 0 3px 3px; border: 1px solid var(--border); border-top: none; }
.ip-body div { flex: 1; height: 18px; background: var(--accent); opacity: 0.12; border-radius: 2px; }
.ip-body div:first-child { flex: 0.4; opacity: 0.25; }

.icon-inx { display: flex; align-items: center; gap: 8px; }
.ix-play { width: 0; height: 0; border-left: 14px solid var(--accent); border-top: 8px solid transparent; border-bottom: 8px solid transparent; opacity: 0.7; }
.ix-dots { display: flex; gap: 3px; }
.ix-dots span { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); opacity: 0.25; }
.ix-dots span:nth-child(2) { opacity: 0.5; }

.icon-diligence { position: relative; }
.id-doc { width: 24px; height: 30px; background: var(--bg-alt); border: 1.5px solid var(--accent); border-radius: 3px; opacity: 0.4; }
.id-check { position: absolute; bottom: -2px; right: -8px; font-size: 16px; color: var(--accent); font-weight: bold; }

.svc-card h3 { font-size: 1.0625rem; font-weight: 700; color: var(--ink); margin-bottom: 0.625rem; letter-spacing: -0.01em; }
.svc-card > p { font-size: 0.875rem; color: var(--ink-secondary); line-height: 1.65; }
.svc-fit {
    margin-top: 1rem; font-size: 0.8125rem;
    color: var(--ink-tertiary);
    padding-left: 0.875rem;
    border-left: 2px solid var(--border);
    line-height: 1.6;
}
.svc-fit strong { color: var(--ink-secondary); }

/* ─── Background / Timeline ─── */
#background { padding: 6rem 0; border-top: 1px solid var(--border); }
.timeline { position: relative; padding-left: 1.75rem; }
.timeline::before {
    content: ''; position: absolute; left: 5px; top: 0; bottom: 0;
    width: 1px; background: var(--border);
}
.tl-entry {
    position: relative;
    display: grid; grid-template-columns: 130px 1fr; gap: 1.5rem;
    padding-bottom: 2.5rem; margin-bottom: 0.5rem;
}
.tl-entry:last-child { padding-bottom: 0; }
.tl-marker {
    position: absolute; left: -1.75rem; top: 6px;
    width: 11px; height: 11px; border-radius: 50%;
    background: var(--bg); border: 2px solid var(--ink-faint); z-index: 1;
}
.tl-marker.current {
    border-color: var(--accent); background: var(--accent);
    box-shadow: 0 0 0 4px rgba(154,52,18,0.12);
}
.tl-period { font-family: var(--mono); font-size: 0.75rem; color: var(--ink-tertiary); padding-top: 0.125rem; white-space: nowrap; }
.tl-content h3 { font-size: 1rem; font-weight: 600; color: var(--ink); margin-bottom: 0.375rem; }
.tl-content p { font-size: 0.875rem; color: var(--ink-secondary); line-height: 1.65; }

/* ─── Research ─── */
#research { padding: 6rem 0; border-top: 1px solid var(--border); }
.research-intro {
    font-size: 1rem; color: var(--ink-secondary); line-height: 1.7;
    margin-bottom: 2rem;
}
.research-intro a { color: var(--ink); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
.research-intro a:hover { color: var(--accent); }
.research-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
    margin-bottom: 2rem;
}
.research-item {
    padding: 1.25rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    transition: border-color 0.25s, box-shadow 0.25s;
    text-decoration: none;
    display: block;
}
a.research-item:hover { border-color: var(--accent); box-shadow: 0 4px 16px rgba(154,52,18,0.06); }
.research-venue {
    display: inline-block;
    font-family: var(--mono); font-size: 0.6875rem; font-weight: 500;
    color: var(--accent); letter-spacing: 0.02em;
    margin-bottom: 0.5rem;
}
.research-item h4 {
    font-size: 0.9375rem; font-weight: 700; color: var(--ink);
    line-height: 1.35; margin-bottom: 0.375rem;
}
.research-item p {
    font-size: 0.8125rem; color: var(--ink-secondary); line-height: 1.6;
    margin: 0;
}
.research-footer {
    font-size: 0.875rem; color: var(--ink-tertiary);
}
.research-footer a {
    color: var(--ink-secondary); font-weight: 500;
    text-decoration: underline; text-underline-offset: 3px;
}
.research-footer a:hover { color: var(--accent); }

/* ─── Contact ─── */
#contact { padding: 6rem 0; border-top: 1px solid var(--border); }
.contact-container { max-width: 640px; }
.contact-header { margin-bottom: 2.5rem; }
.contact-headline {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 800; color: var(--ink);
    letter-spacing: -0.03em; margin-bottom: 0.75rem;
}
.contact-sub { font-size: 1rem; color: var(--ink-secondary); margin-bottom: 0; line-height: 1.7; }

/* Form layout */
.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: 0.375rem; }
.form-group label {
    font-size: 0.8125rem; font-weight: 600; color: var(--ink);
    letter-spacing: 0.01em;
}
.required { color: var(--accent); }

/* Inputs */
.contact-form input,
.contact-form select,
.contact-form textarea {
    font-family: var(--sans);
    font-size: 0.9375rem;
    color: var(--ink);
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
    width: 100%;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--ink-tertiary);
}
.contact-form select { color: var(--ink-tertiary); cursor: pointer; appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1.5l5 5 5-5' stroke='%23A8A29E' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 1rem center;
    padding-right: 2.5rem;
}
.contact-form select:has(option:checked:not([disabled])) { color: var(--ink); }
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(154,52,18,0.06);
}
.contact-form textarea { resize: vertical; min-height: 100px; line-height: 1.6; }

/* Submit */
.form-submit {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
    font-family: var(--sans); font-size: 1rem; font-weight: 600;
    color: #fff; background: var(--accent);
    border: none; border-radius: 8px;
    padding: 0.875rem 2rem;
    cursor: pointer;
    transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
    margin-top: 0.5rem;
    align-self: flex-start;
}
.form-submit:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 16px rgba(154,52,18,0.15);
}
.form-submit:active { transform: scale(0.98); }
.form-submit span { transition: transform 0.2s; }
.form-submit:hover span { transform: translateX(3px); }

/* Footer links */
.contact-footer { margin-top: 2.5rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.contact-secondary { display: flex; gap: 1.5rem; margin-bottom: 0.75rem; }
.contact-secondary a { font-size: 0.875rem; font-weight: 500; color: var(--ink-secondary); text-decoration: underline; text-underline-offset: 3px; }
.contact-secondary a:hover { color: var(--accent); }
.contact-loc { font-family: var(--mono); font-size: 0.8125rem; color: var(--ink-tertiary); }
.contact-loc a { color: var(--ink-tertiary); text-decoration: underline; text-underline-offset: 3px; }
.contact-loc a:hover { color: var(--accent); }

/* ─── Footer ─── */
footer {
    padding: 2.5rem 0; border-top: 1px solid var(--border);
    text-align: center; font-size: 0.75rem; color: var(--ink-tertiary);
}

/* ─── Scroll Reveal ─── */
.card-reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.card-reveal.visible { opacity: 1; transform: translateY(0); }

/* ─── Responsive ─── */
@media (max-width: 900px) {
    .hero-grid { grid-template-columns: 1fr; gap: 3rem; }
    .hero-text { max-width: 100%; }
    header { min-height: auto; padding: 8rem 0 3rem; }
    .bento-grid { grid-template-columns: 1fr; }
    .bento-wide { grid-column: span 1; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
    .services-grid { grid-template-columns: 1fr; }
    .svc-wide { grid-column: span 1; }
    .research-grid { grid-template-columns: 1fr 1fr; }
    .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
    nav { padding: 0.75rem 1.25rem; }
    .nav-links { gap: 1.25rem; }
    .nav-links a { font-size: 0.75rem; }
    .container { padding: 0 1.25rem; }
    h1 { font-size: 2.5rem; }
    .hero-actions { flex-direction: column; }
    .btn-primary, .btn-ghost { justify-content: center; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
    .stat-num { font-size: 1.75rem; }
    .slide-dashboard { flex-wrap: wrap; }
    .dash-chart { flex-basis: 100%; }
    .inx-problems { grid-template-columns: 1fr; }
    .tl-entry { grid-template-columns: 1fr; gap: 0.25rem; }
    .research-grid { grid-template-columns: 1fr; }
    #work, #services, #background, #research, #contact { padding: 4rem 0; }
}

/* ─── Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0s !important; transition-duration: 0s !important; }
    .hero-visual { animation: none; }
    .card-reveal { opacity: 1; transform: none; }
}

/* ─── Print ─── */
@media print {
    nav, .mockup-shadow, .hero-visual, .card-visual { display: none; }
    body { background: white; }
    header { min-height: auto; padding: 2rem 0; }
    .hero-grid { grid-template-columns: 1fr; }
    .hero-rule { background: black; }
    .card-reveal { opacity: 1; transform: none; }
    .bento-card, .svc-card { border-color: #ccc; }
    section { page-break-inside: avoid; }
    footer { display: none; }
}