/* ═══════════════════════════════════════════
   Stitch Design System — Technical Portfolio
   Colors & tokens extracted from Google Stitch
   ═══════════════════════════════════════════ */

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

:root {
  /* ── Surface & Background ── */
  --bg:                   #0b141c;   /* background / surface */
  --surface-lowest:       #060f16;   /* surface-container-lowest */
  --surface-low:          #141c24;   /* surface-container-low */
  --surface:              #182028;   /* surface-container */
  --surface-high:         #222b33;   /* surface-container-high */
  --surface-highest:      #2d363e;   /* surface-container-highest */
  --surface-bright:       #313a43;   /* surface-bright */

  /* ── Text ── */
  --on-surface:           #dae3ee;   /* primary text */
  --on-surface-dim:       #c0c7d4;   /* secondary text / on-surface-variant */
  --outline:              #8b919d;   /* muted text / borders */
  --outline-variant:      #414752;   /* subtle borders / dividers */

  /* ── Primary (Blue — interactive, links, focus) ── */
  --primary:              #a2c9ff;   /* light blue — text on dark */
  --primary-container:    #58a6ff;   /* solid blue — buttons, badges */
  --on-primary-container: #003a6b;   /* text on primary-container */

  /* ── Secondary (Green — success, active, hover) ── */
  --secondary:            #67df70;   /* active states, status dots, hover */
  --secondary-container:  #27a640;   /* filled green */
  --on-secondary:         #00390d;

  /* ── Tertiary (Gold — warning, pending) ── */
  --tertiary:             #fabc45;
  --tertiary-container:   #d29922;

  /* ── Error ── */
  --error:                #ffb4ab;
  --error-container:      #93000a;

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

  /* ── Type scale ── */
  --text-display:     32px;  /* -0.02em, 600, 1.25 */
  --text-headline-lg: 24px;  /* 600, 1.5 */
  --text-headline-md: 20px;  /* 600, 1.5 */
  --text-body-lg:     16px;  /* 400, 1.5 */
  --text-body-md:     14px;  /* 400, 1.5 */
  --text-body-sm:     12px;  /* 400, 1.5 */
  --text-code:        13px;  /* JetBrains Mono, 400, 1.6 */
  --text-label-caps:  11px;  /* 600, 0.05em, uppercase */
  --text-badge:       12px;  /* JetBrains Mono, 500 */

  /* ── Border radius (Stitch "ROUND_FOUR" — very flat) ── */
  --r-sm:   2px;
  --r:      4px;
  --r-md:   6px;
  --r-lg:   8px;
  --r-full: 9999px;

  /* ── Spacing ── */
  --sp-xs:  4px;
  --sp-sm:  8px;
  --sp-md:  16px;
  --sp-lg:  24px;
  --sp-xl:  32px;
  --max-w:  1280px;

  /* ── Transitions ── */
  --t: 0.2s ease;
}

/* ── Base ── */
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--on-surface);
  font-family: var(--font);
  font-size: var(--text-body-md);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--outline-variant); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--outline); }

/* ── Pulse animation (status dots) ── */
@keyframes pulse-ring {
  0%   { transform: scale(0.8); opacity: 0.6; }
  100% { transform: scale(2.4); opacity: 0; }
}

.status-dot {
  position: relative;
  display: inline-block;
}
.status-dot::before {
  content: '';
  position: absolute;
  inset: -4px;
  background: inherit;
  border-radius: 50%;
  z-index: -1;
  animation: pulse-ring 2s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
}

/* ════════════════════════════
   NAV
   ════════════════════════════ */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-md) var(--sp-lg);
  background: rgba(11, 20, 28, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--outline-variant);
  transition: padding var(--t);
}

.nav-logo {
  font-family: var(--mono);
  font-size: var(--text-code);
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-lg);
  list-style: none;
}

.nav-links a {
  font-size: var(--text-body-md);
  font-weight: 500;
  color: var(--on-surface-dim);
  text-decoration: none;
  transition: color var(--t);
}

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

.nav-cta {
  background: var(--primary-container) !important;
  color: var(--on-primary-container) !important;
  font-size: var(--text-body-sm) !important;
  font-weight: 700 !important;
  padding: var(--sp-sm) var(--sp-md) !important;
  border-radius: var(--r) !important;
  transition: background var(--t), color var(--t) !important;
}

.nav-cta:hover {
  background: var(--primary) !important;
  color: var(--bg) !important;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--sp-xs);
}
.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--on-surface-dim);
  border-radius: 1px;
  transition: var(--t);
}

/* ════════════════════════════
   HERO
   ════════════════════════════ */
#hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: 7rem var(--sp-lg) var(--sp-xl);
  overflow: hidden;
  background-image: radial-gradient(circle at 50% 50%, rgba(162, 201, 255, 0.04) 0%, transparent 60%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.hero-noise {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.3;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.hero-glow--1 {
  width: 720px;
  height: 720px;
  background: radial-gradient(circle, rgba(88,166,255,0.11) 0%, transparent 65%);
  top: -260px;
  right: -160px;
}

.hero-glow--2 {
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(103,223,112,0.07) 0%, transparent 65%);
  bottom: -120px;
  left: -80px;
}

.hero-content {
  position: relative;
  max-width: 600px;
  z-index: 2;
}

/* Available badge */
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  background: var(--surface-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-full);
  padding: var(--sp-xs) var(--sp-sm);
  margin-bottom: var(--sp-lg);
}

.hero-tag-dot {
  width: 8px; height: 8px;
  background: var(--secondary);
  border-radius: 50%;
}

.hero-tag span {
  font-family: var(--mono);
  font-size: var(--text-badge);
  font-weight: 500;
  color: var(--on-surface-dim);
}

#hero h1 {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--on-surface);
  margin-bottom: var(--sp-sm);
}

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

.hero-sub-role {
  font-size: var(--text-headline-lg);
  font-weight: 600;
  color: var(--primary);
  margin-bottom: var(--sp-md);
  line-height: 1.5;
}

.hero-sub {
  font-size: var(--text-body-lg);
  color: var(--on-surface-dim);
  line-height: 1.6;
  margin-bottom: var(--sp-xl);
  max-width: 520px;
}

.hero-sub strong { color: var(--on-surface); font-weight: 600; }

.hero-btns {
  display: flex;
  gap: var(--sp-md);
  flex-wrap: wrap;
  margin-bottom: var(--sp-xl);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: var(--sp-md) var(--sp-lg);
  border-radius: var(--r);
  font-size: var(--text-body-sm);
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--t), color var(--t), border-color var(--t);
  line-height: 1;
}

.btn-primary {
  background: var(--primary-container);
  color: var(--on-primary-container);
  border-color: transparent;
}
.btn-primary:hover {
  background: var(--primary);
  color: var(--bg);
}

.btn-outline {
  background: transparent;
  color: var(--on-surface);
  border-color: var(--outline-variant);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ── Hero stats ── */
.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--sp-lg);
}

.stat-divider {
  width: 1px;
  height: 28px;
  background: var(--outline-variant);
}

.stat-num {
  font-size: var(--text-headline-lg);
  font-weight: 700;
  color: var(--on-surface);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: var(--text-body-sm);
  color: var(--outline);
  margin-top: 2px;
}

/* ── Hero code card (floating right) ── */
.hero-code-card {
  position: absolute;
  right: max(var(--sp-lg), 5vw);
  top: 50%;
  width: 400px;
  background: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  overflow: hidden;
  z-index: 2;
  box-shadow: 0 0 60px rgba(88,166,255,0.08), 0 20px 40px rgba(0,0,0,0.3);
  animation: code-card-float 6s ease-in-out infinite;
  transition: box-shadow 0.4s ease;
}
.hero-code-card:hover {
  animation-play-state: paused;
  box-shadow: 0 0 80px rgba(88,166,255,0.14), 0 24px 48px rgba(0,0,0,0.35);
}

.code-card-header {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: var(--sp-sm) var(--sp-md);
  background: var(--surface-high);
  border-bottom: 1px solid var(--outline-variant);
}

.code-card-dots { display: flex; gap: 5px; }
.dot-red    { width: 11px; height: 11px; border-radius: 50%; background: #ff5f56; }
.dot-yellow { width: 11px; height: 11px; border-radius: 50%; background: #ffbd2e; }
.dot-green  { width: 11px; height: 11px; border-radius: 50%; background: #27c93f; }

.code-card-filename {
  font-family: var(--mono);
  font-size: var(--text-body-sm);
  color: var(--on-surface-dim);
  flex: 1;
  text-align: center;
}

.code-card-body {
  padding: var(--sp-md);
  background: #0d1117;
  font-family: var(--mono);
  font-size: var(--text-code);
  line-height: 1.75;
  overflow-x: auto;
}

.code-line { white-space: pre; }
.code-line--blank { height: 0.5rem; display: block; }
.code-line--indent { padding-left: 1.25rem; }

/* Syntax tokens */
.ck { color: var(--primary); }
.cm { color: var(--primary); }
.cf { color: var(--tertiary); }
.cc { color: var(--outline); font-style: italic; }
.cv { color: var(--on-surface-dim); }
.ca { color: var(--tertiary); }
.cn { color: var(--tertiary); }
.cs { color: var(--secondary); }

/* scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: var(--sp-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-xs);
  color: var(--outline);
  font-size: var(--text-label-caps);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.scroll-mouse {
  width: 18px; height: 28px;
  border: 1.5px solid var(--outline-variant);
  border-radius: 10px;
  display: flex;
  justify-content: center;
  padding-top: 4px;
}

.scroll-mouse-wheel {
  width: 2px; height: 5px;
  background: var(--outline);
  border-radius: 2px;
  animation: scroll-wheel 2s ease-in-out infinite;
}

@keyframes scroll-wheel {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50%       { transform: translateY(7px); opacity: 0.2; }
}

@keyframes code-card-float {
  0%, 100% { transform: translateY(-50%) rotate(-2deg); }
  50%       { transform: translateY(calc(-50% - 12px)) rotate(-2deg); }
}

/* ════════════════════════════
   CONTAINER SCROLL ANIMATION
   ════════════════════════════ */
#scroll-reveal {
  padding: var(--sp-xl) 0 0;
  background: var(--surface-lowest);
  overflow: hidden;
}

.csa-header {
  text-align: center;
  padding: 0 var(--sp-lg) var(--sp-xl);
}

.csa-perspective-wrapper {
  perspective: 1000px;
  perspective-origin: 50% 30%;
}

.csa-container {
  transform-origin: top center;
  will-change: transform;
  padding: 0 var(--sp-lg) 0;
}

.csa-browser {
  max-width: 1000px;
  margin: 0 auto;
  background: var(--surface-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  overflow: hidden;
  /* No shadow — flat design */
}

.csa-browser-bar {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  padding: var(--sp-sm) var(--sp-md);
  background: var(--surface-high);
  border-bottom: 1px solid var(--outline-variant);
}

.csa-browser-dots { display: flex; gap: 5px; }
.csa-browser-dots span {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--outline-variant);
}

.csa-browser-url {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
  background: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r);
  padding: 3px var(--sp-md);
  font-family: var(--mono);
  font-size: var(--text-code);
  color: var(--outline);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.csa-browser-actions {
  display: flex;
  gap: var(--sp-xs);
}
.csa-browser-actions span {
  width: 16px; height: 16px;
  background: var(--outline-variant);
  border-radius: var(--r-sm);
}

.csa-browser-content { height: 380px; overflow: hidden; }

.csa-dashboard { display: flex; height: 100%; }

.csa-dash-sidebar {
  width: 180px;
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--outline-variant);
  padding: var(--sp-lg) var(--sp-md);
  display: flex;
  flex-direction: column;
  gap: var(--sp-lg);
}

.csa-dash-logo {
  font-size: var(--text-body-sm);
  font-weight: 700;
  color: var(--on-surface);
  padding-bottom: var(--sp-md);
  border-bottom: 1px solid var(--outline-variant);
}

.csa-dash-nav { display: flex; flex-direction: column; gap: 2px; }

.csa-dash-nav-item {
  font-size: var(--text-body-sm);
  color: var(--outline);
  padding: var(--sp-xs) var(--sp-sm);
  border-radius: var(--r);
  cursor: default;
}

.csa-dash-nav-item--active {
  background: var(--surface-high);
  color: var(--on-surface);
  font-weight: 600;
  border-left: 2px solid var(--primary-container);
  border-radius: 0 var(--r) var(--r) 0;
  padding-left: calc(var(--sp-sm) - 2px);
}

.csa-dash-status {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
  font-size: 11px;
  color: var(--outline);
}

.csa-status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.csa-status-dot--green {
  background: var(--secondary);
}

.csa-dash-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.csa-dash-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-md);
  border-bottom: 1px solid var(--outline-variant);
  flex-shrink: 0;
}

.csa-dash-title { font-weight: 600; font-size: var(--text-body-md); }
.csa-dash-time  { font-family: var(--mono); font-size: 11px; color: var(--outline); }

.csa-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--outline-variant);
  flex-shrink: 0;
}

.csa-metric {
  padding: var(--sp-md);
  border-right: 1px solid var(--outline-variant);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.csa-metric:last-child { border-right: none; }

.csa-metric--accent { background: rgba(88, 166, 255, 0.05); }

.csa-metric-icon { font-size: 14px; margin-bottom: 2px; }
.csa-metric-val {
  font-size: var(--text-body-md);
  font-weight: 700;
  color: var(--on-surface);
  font-variant-numeric: tabular-nums;
}
.csa-metric--accent .csa-metric-val { color: var(--primary); }
.csa-metric-lbl { font-size: 11px; color: var(--outline); }

.csa-chart-area {
  flex: 1;
  padding: var(--sp-md);
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
  overflow: hidden;
}

.csa-chart-label { font-size: 11px; color: var(--outline); font-weight: 600; letter-spacing: 0.03em; }

.csa-chart { flex: 1; display: flex; flex-direction: column; gap: var(--sp-xs); }

.csa-chart-bars {
  flex: 1;
  display: flex;
  align-items: flex-end;
  gap: var(--sp-xs);
}

.csa-bar {
  flex: 1;
  height: var(--h);
  background: rgba(88, 166, 255, 0.2);
  border: 1px solid rgba(88, 166, 255, 0.3);
  border-radius: var(--r-sm) var(--r-sm) 0 0;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 3px;
}
.csa-bar span { font-size: 10px; font-family: var(--mono); color: var(--primary); font-weight: 500; }
.csa-bar--accent {
  background: rgba(88, 166, 255, 0.4);
  border-color: var(--primary-container);
}

.csa-chart-legend { display: flex; justify-content: space-between; }
.csa-chart-legend span { font-size: 10px; color: var(--outline); font-family: var(--mono); }

.csa-prediction-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-xs);
  background: rgba(103, 223, 112, 0.08);
  border: 1px solid rgba(103, 223, 112, 0.2);
  border-radius: var(--r-full);
  padding: 3px var(--sp-sm);
  font-size: 11px;
  color: var(--secondary);
  font-weight: 600;
  align-self: flex-start;
  font-family: var(--mono);
}

.csa-pred-dot {
  width: 6px; height: 6px;
  background: var(--secondary);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ════════════════════════════
   SECTION COMMONS
   ════════════════════════════ */
section { padding: 5rem 0; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-lg);
}

.section-label {
  margin-bottom: var(--sp-sm);
  padding-left: 10px;
  border-left: 2px solid var(--primary-container);
}

.section-label span {
  font-size: var(--text-label-caps);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--outline);
  font-family: var(--font);
}

h2 {
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 700;
  color: var(--on-surface);
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: var(--sp-sm);
}

.section-desc {
  font-size: var(--text-body-md);
  color: var(--on-surface-dim);
  max-width: 560px;
  line-height: 1.65;
  margin-bottom: var(--sp-xl);
}

/* ── Fade-in ── */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ════════════════════════════
   ABOUT
   ════════════════════════════ */
#about { background: var(--surface-lowest); border-top: 1px solid var(--outline-variant); }

.about-grid {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 3rem;
  align-items: start;
}

.about-avatar-col {
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
  align-items: center;
}

.about-avatar {
  position: relative;
  width: 120px; height: 120px;
}

.avatar-initials {
  width: 120px; height: 120px;
  background: var(--surface-high);
  border: 1px solid var(--outline-variant);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.02em;
}

.avatar-ring {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid transparent;
  background: conic-gradient(var(--primary-container), var(--secondary), var(--primary-container)) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
  animation: spin-ring 8s linear infinite;
}

@keyframes spin-ring {
  to { transform: rotate(360deg); }
}

.about-quick-info {
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
  width: 100%;
}

.quick-info-item {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  font-size: var(--text-body-sm);
  color: var(--on-surface-dim);
  padding: var(--sp-xs) var(--sp-sm);
  border-radius: var(--r);
  border: 1px solid var(--outline-variant);
  background: var(--surface);
}

.qi-icon { font-size: 13px; }

.about-text h2 { margin-bottom: var(--sp-md); }

.about-text p {
  font-size: var(--text-body-md);
  color: var(--on-surface-dim);
  line-height: 1.7;
  margin-bottom: var(--sp-sm);
}
.about-text p strong { color: var(--on-surface); font-weight: 600; }

.skills-section {
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
  margin-top: var(--sp-lg);
  padding-top: var(--sp-lg);
  border-top: 1px solid var(--outline-variant);
}

.skills-category { display: flex; flex-direction: column; gap: var(--sp-xs); }

.skills-cat-label {
  font-size: var(--text-label-caps);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--outline);
}

.skills-row { display: flex; flex-wrap: wrap; gap: var(--sp-xs); }

.skill-tag {
  background: var(--surface-high);
  border: 1px solid var(--outline-variant);
  color: var(--on-surface-dim);
  font-family: var(--mono);
  font-size: var(--text-badge);
  font-weight: 500;
  padding: 3px var(--sp-sm);
  border-radius: var(--r);
  transition: border-color var(--t), color var(--t);
}

.skill-tag:hover {
  border-color: var(--primary-container);
  color: var(--primary);
}

/* ════════════════════════════
   PROJECTS
   ════════════════════════════ */
#projects { background: var(--bg); border-top: 1px solid var(--outline-variant); }

.projects-grid { display: flex; flex-direction: column; gap: var(--sp-md); }

/* ── Cards ── */
.project-card {
  background: var(--surface-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: border-color var(--t);
}

.project-card:hover { border-color: var(--outline); }

.project-card--featured { background: var(--surface-low); }

.project-card--featured:hover {
  border-color: var(--primary-container);
  box-shadow: 0 0 0 1px rgba(88,166,255,0.07), 0 8px 40px rgba(88,166,255,0.08);
}

.featured-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-md);
  padding: var(--sp-sm) var(--sp-md);
  background: var(--surface);
  border-bottom: 1px solid var(--outline-variant);
  flex-wrap: wrap;
}

.featured-topbar-pills { display: flex; gap: var(--sp-xs); flex-wrap: wrap; }

.feat-pill {
  font-family: var(--mono);
  font-size: var(--text-badge);
  font-weight: 500;
  padding: 2px var(--sp-sm);
  border-radius: var(--r);
  background: rgba(88, 166, 255, 0.1);
  color: var(--primary);
  border: 1px solid rgba(88, 166, 255, 0.2);
}

.feat-pill--dim {
  background: var(--surface-high);
  color: var(--outline);
  border-color: var(--outline-variant);
}

.feat-pill--research {
  background: rgba(250,188,69,0.10);
  color: var(--tertiary);
  border-color: rgba(250,188,69,0.28);
}

.feat-version {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--outline);
}

.featured-inner {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--sp-lg);
  padding: var(--sp-lg);
}

.featured-title-row {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  margin-bottom: var(--sp-xs);
}

.project-icon {
  width: 40px; height: 40px;
  background: var(--surface-high);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.project-title {
  font-size: var(--text-headline-md);
  font-weight: 600;
  color: var(--on-surface);
  line-height: 1.2;
  margin: 0;
}

.feat-subtitle {
  font-size: var(--text-body-sm);
  color: var(--outline);
  margin-top: 2px;
}

.project-desc {
  font-size: var(--text-body-md);
  color: var(--on-surface-dim);
  line-height: 1.65;
}
.project-desc strong { color: var(--on-surface); font-weight: 600; }

.feat-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: var(--sp-md);
  background: var(--outline-variant);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r);
  overflow: hidden;
}

.feat-stat {
  background: var(--surface);
  padding: var(--sp-sm) var(--sp-md);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.feat-stat-num {
  font-size: var(--text-body-md);
  font-weight: 700;
  color: var(--on-surface);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
  font-family: var(--mono);
}

.feat-stat-lbl {
  font-size: 11px;
  color: var(--outline);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-xs);
  margin-top: var(--sp-md);
}

.project-tag {
  font-family: var(--mono);
  font-size: var(--text-badge);
  font-weight: 500;
  color: var(--outline);
  background: var(--surface-high);
  border: 1px solid var(--outline-variant);
  padding: 2px var(--sp-xs);
  border-radius: var(--r);
  transition: color var(--t), border-color var(--t);
}
.project-tag:hover { color: var(--primary); border-color: rgba(88,166,255,0.3); }

.featured-bottom-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--sp-md);
  padding-top: var(--sp-md);
  border-top: 1px solid var(--outline-variant);
  flex-wrap: wrap;
  gap: var(--sp-sm);
}

.project-status {
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
  font-size: var(--text-body-sm);
  color: var(--outline);
}

.dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.dot-yellow { background: var(--tertiary); }
.dot-green  { background: var(--secondary); }

.project-links { display: flex; gap: var(--sp-xs); }

.project-link {
  padding: var(--sp-xs) var(--sp-sm);
  border-radius: var(--r);
  background: var(--surface-high);
  border: 1px solid var(--outline-variant);
  color: var(--on-surface-dim);
  font-size: var(--text-body-sm);
  font-weight: 500;
  text-decoration: none;
  transition: border-color var(--t), color var(--t);
}
.project-link:hover { border-color: var(--primary-container); color: var(--primary); }
.project-link--text { font-family: var(--mono); font-size: 11px; }

/* ── Arch panel ── */
.featured-right {
  background: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-md);
  padding: var(--sp-md);
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
}

.arch-heading {
  font-size: var(--text-label-caps);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--outline);
  padding-bottom: var(--sp-sm);
  border-bottom: 1px solid var(--outline-variant);
}

.arch-flow { display: flex; flex-direction: column; }

.arch-layer {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: var(--sp-xs) var(--sp-sm);
  border-radius: var(--r);
  transition: background var(--t);
}
.arch-layer:hover { background: var(--surface-high); }

.arch-layer--ml {
  background: rgba(88, 166, 255, 0.05);
  border: 1px solid rgba(88, 166, 255, 0.15);
}

.arch-icon { font-size: 14px; flex-shrink: 0; }

.arch-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.arch-name {
  font-size: var(--text-body-sm);
  font-weight: 600;
  color: var(--on-surface);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.arch-desc {
  font-size: 11px;
  color: var(--outline);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-family: var(--mono);
}

.arch-connector {
  font-size: 11px;
  color: var(--outline-variant);
  padding-left: 1.35rem;
  line-height: 1;
  font-family: var(--mono);
}

.arch-footer {
  font-size: 11px;
  color: var(--outline);
  text-align: center;
  padding-top: var(--sp-sm);
  border-top: 1px solid var(--outline-variant);
  font-family: var(--mono);
}

/* ── Non-featured card layout ── */
.project-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-md) var(--sp-md) 0;
}

.project-body { padding: var(--sp-sm) var(--sp-md) var(--sp-md); }

.auto-prod-badge {
  font-family: var(--mono);
  font-size: var(--text-badge);
  font-weight: 500;
  color: var(--secondary);
  background: rgba(103, 223, 112, 0.08);
  border: 1px solid rgba(103, 223, 112, 0.2);
  padding: 2px var(--sp-sm);
  border-radius: var(--r-full);
}

.auto-context {
  font-size: var(--text-body-sm);
  color: var(--outline);
  margin-bottom: var(--sp-xs);
  font-family: var(--mono);
}

/* ── Card buttons ── */
.card-btns {
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
  margin-top: var(--sp-md);
}

.btn-card-primary {
  display: block;
  text-align: center;
  padding: var(--sp-sm) var(--sp-md);
  background: var(--primary-container);
  color: var(--on-primary-container);
  font-size: var(--text-body-sm);
  font-weight: 700;
  border-radius: var(--r);
  text-decoration: none;
  transition: background var(--t), color var(--t);
}
.btn-card-primary:hover { background: var(--primary); color: var(--bg); }

.card-btns-row { display: flex; gap: var(--sp-xs); }

.btn-card-ghost {
  flex: 1;
  display: block;
  text-align: center;
  padding: var(--sp-xs) var(--sp-sm);
  background: transparent;
  color: var(--on-surface-dim);
  font-size: var(--text-body-sm);
  font-weight: 500;
  border-radius: var(--r);
  border: 1px solid var(--outline-variant);
  text-decoration: none;
  cursor: pointer;
  font-family: var(--font);
  transition: border-color var(--t), color var(--t);
}
.btn-card-ghost:hover { border-color: var(--outline); color: var(--on-surface); }

/* ════════════════════════════
   AUTOMATISMOS
   ════════════════════════════ */
#automatismos { background: var(--surface-lowest); border-top: 1px solid var(--outline-variant); }

.auto-deco {
  background: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-md);
  padding: var(--sp-md) var(--sp-lg);
  margin-bottom: var(--sp-lg);
  overflow-x: auto;
}

.auto-deco-flow {
  display: flex;
  align-items: center;
  min-width: max-content;
}

.auto-deco-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-xs);
  padding: var(--sp-xs) var(--sp-sm);
  background: var(--surface-high);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-md);
}

.auto-deco-node--end {
  background: rgba(88, 166, 255, 0.08);
  border-color: rgba(88, 166, 255, 0.25);
}

.adn-icon { font-size: 1rem; }
.adn-label {
  font-family: var(--mono);
  font-size: var(--text-badge);
  font-weight: 500;
  color: var(--on-surface-dim);
  white-space: nowrap;
}

.auto-deco-arrow {
  width: 2rem;
  height: 1px;
  background: var(--outline-variant);
  flex-shrink: 0;
  position: relative;
}
.auto-deco-arrow::after {
  content: '›';
  position: absolute;
  right: -5px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary-container);
  font-size: 14px;
  line-height: 1;
}

.auto-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-md);
}

/* ════════════════════════════
   CONTACT
   ════════════════════════════ */
#contact { background: var(--bg); border-top: 1px solid var(--outline-variant); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-xl);
  align-items: start;
}

.contact-info h3 {
  font-size: var(--text-headline-md);
  font-weight: 600;
  color: var(--on-surface);
  margin-bottom: var(--sp-sm);
}

.contact-info > p {
  font-size: var(--text-body-md);
  color: var(--on-surface-dim);
  line-height: 1.65;
  margin-bottom: var(--sp-lg);
}

.contact-links { display: flex; flex-direction: column; gap: var(--sp-xs); }

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  padding: var(--sp-sm) var(--sp-md);
  background: var(--surface-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-md);
  text-decoration: none;
  transition: border-color var(--t);
}
.contact-item:hover { border-color: var(--primary-container); }

.contact-icon {
  width: 32px; height: 32px;
  border-radius: var(--r-md);
  background: var(--surface-high);
  border: 1px solid var(--outline-variant);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-body-sm);
  font-weight: 700;
  color: var(--on-surface-dim);
  flex-shrink: 0;
  font-family: var(--mono);
}

.contact-icon--ig   { background: rgba(225,48,108,0.08); border-color: rgba(225,48,108,0.2); color: #e1306c; }
.contact-icon--orcid { background: rgba(166,206,57,0.08); border-color: rgba(166,206,57,0.2); color: #a6ce39; }

.contact-detail { display: flex; flex-direction: column; gap: 1px; }

.contact-label {
  font-size: var(--text-label-caps);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--outline);
}

.contact-value {
  font-size: var(--text-body-sm);
  color: var(--on-surface-dim);
  font-weight: 500;
}

/* ── Form ── */
.contact-form {
  background: var(--surface-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  padding: var(--sp-lg);
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-sm); }

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
  margin-bottom: var(--sp-sm);
}

label {
  font-size: var(--text-body-sm);
  font-weight: 600;
  color: var(--on-surface-dim);
}

input, select, textarea {
  background: var(--surface-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-md);
  padding: var(--sp-sm) var(--sp-md);
  color: var(--on-surface);
  font-size: var(--text-body-md);
  font-family: var(--font);
  outline: none;
  transition: border-color var(--t), box-shadow var(--t);
  resize: none;
  width: 100%;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--primary-container);
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.15);
}

input::placeholder, textarea::placeholder { color: var(--outline); }
select { appearance: none; cursor: pointer; }
select option { background: var(--surface-low); }

.form-success {
  display: none;
  text-align: center;
  padding: var(--sp-xl);
  color: var(--on-surface);
  line-height: 1.8;
}

.check { font-size: 2rem; margin-bottom: var(--sp-sm); }

/* ════════════════════════════
   FOOTER
   ════════════════════════════ */
footer {
  background: var(--surface-lowest);
  border-top: 1px solid var(--outline-variant);
  padding: var(--sp-xl) var(--sp-lg);
  text-align: center;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-sm);
}

.footer-logo {
  font-family: var(--mono);
  font-size: var(--text-code);
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

footer p { font-size: var(--text-body-sm); color: var(--outline); }
footer span { color: var(--on-surface-dim); font-weight: 600; }
.footer-sub { font-size: 11px !important; margin-top: 2px; }

/* ════════════════════════════
   SCROLL TOP
   ════════════════════════════ */
#scrollTop {
  position: fixed;
  bottom: var(--sp-lg);
  right: var(--sp-lg);
  width: 36px; height: 36px;
  background: var(--surface-high);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-md);
  color: var(--on-surface-dim);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--t), transform var(--t), border-color var(--t), color var(--t);
  z-index: 50;
}
#scrollTop.visible { opacity: 1; transform: translateY(0); }
#scrollTop:hover { border-color: var(--primary-container); color: var(--primary); }

/* ════════════════════════════
   MODALS
   ════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(6, 15, 22, 0.9);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--surface-low);
  border: 1px solid var(--outline-variant);
  border-top: 1px solid var(--outline);
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  width: 100%;
  max-width: 800px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: translateY(40px);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-overlay.open .modal { transform: translateY(0); }

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-md);
  padding: var(--sp-md) var(--sp-lg);
  border-bottom: 1px solid var(--outline-variant);
  background: var(--surface);
  flex-shrink: 0;
}

.modal-title {
  font-size: var(--text-body-md);
  font-weight: 600;
  color: var(--on-surface);
  line-height: 1.4;
}

.modal-context {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--outline);
  margin-top: 3px;
}

.modal-close {
  background: var(--surface-high);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r);
  color: var(--outline);
  cursor: pointer;
  font-size: var(--text-body-sm);
  width: 28px; height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: border-color var(--t), color var(--t);
}
.modal-close:hover { border-color: var(--error-container); color: var(--error); }

.modal-body {
  overflow-y: auto;
  padding: var(--sp-lg);
  display: flex;
  flex-direction: column;
  gap: var(--sp-lg);
}

.modal-section { display: flex; flex-direction: column; gap: var(--sp-sm); }

.modal-section-title {
  font-size: var(--text-label-caps);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--outline);
  padding-bottom: var(--sp-sm);
  border-bottom: 1px solid var(--outline-variant);
}

.flow-steps {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-xs);
}

.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: var(--sp-xs) var(--sp-sm);
  background: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-md);
  min-width: 76px;
}

.flow-step--accent {
  background: rgba(88, 166, 255, 0.08);
  border-color: rgba(88, 166, 255, 0.25);
}

.flow-step-icon { font-size: 14px; }
.flow-step-name { font-size: 11px; font-weight: 700; color: var(--on-surface); }
.flow-step-sub  { font-family: var(--mono); font-size: 10px; color: var(--outline); }

.flow-arrow { font-size: 14px; color: var(--primary-container); font-weight: 700; }

.modal-desc p {
  font-size: var(--text-body-md);
  color: var(--on-surface-dim);
  line-height: 1.7;
  margin-bottom: var(--sp-sm);
}

.challenges-list { display: flex; flex-direction: column; gap: var(--sp-xs); }

.challenge-item {
  padding: var(--sp-sm) var(--sp-md);
  background: var(--surface);
  border: 1px solid var(--outline-variant);
  border-left: 2px solid var(--primary-container);
  border-radius: 0 var(--r) var(--r) 0;
  font-size: var(--text-body-sm);
  color: var(--on-surface-dim);
  line-height: 1.6;
}
.challenge-item strong { color: var(--on-surface); font-weight: 600; }
.challenge-item code {
  font-family: var(--mono);
  font-size: var(--text-code);
  background: var(--surface-high);
  padding: 1px 5px;
  border-radius: var(--r);
  color: var(--tertiary);
  border: 1px solid var(--outline-variant);
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--outline-variant);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-md);
  overflow: hidden;
}

.impact-item {
  background: var(--surface);
  padding: var(--sp-md);
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.impact-num {
  font-family: var(--mono);
  font-size: var(--text-body-sm);
  font-weight: 700;
  color: var(--primary);
}

.impact-label {
  font-size: var(--text-body-sm);
  color: var(--outline);
  line-height: 1.5;
}

.modal-footer {
  display: flex;
  gap: var(--sp-sm);
  padding: var(--sp-md) var(--sp-lg);
  border-top: 1px solid var(--outline-variant);
  background: var(--surface);
  flex-shrink: 0;
}

.modal-cta { min-width: 140px; }

/* ── Code Modal ── */
.modal--code { max-width: 860px; }

.code-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-sm) var(--sp-md);
  background: var(--surface);
  border-bottom: 1px solid var(--outline-variant);
  flex-shrink: 0;
}

.code-modal-title {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  font-family: var(--mono);
  font-size: var(--text-body-sm);
  color: var(--on-surface-dim);
}

.code-lang-badge {
  background: rgba(88, 166, 255, 0.1);
  border: 1px solid rgba(88, 166, 255, 0.25);
  color: var(--primary);
  font-size: 10px;
  font-weight: 700;
  padding: 1px var(--sp-xs);
  border-radius: var(--r-sm);
  font-family: var(--mono);
}

.copy-btn {
  background: var(--surface-high);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r);
  color: var(--on-surface-dim);
  font-size: var(--text-body-sm);
  font-weight: 600;
  font-family: var(--font);
  padding: var(--sp-xs) var(--sp-sm);
  cursor: pointer;
  transition: border-color var(--t), color var(--t);
}
.copy-btn:hover, .copy-btn.copied {
  border-color: rgba(103, 223, 112, 0.3);
  color: var(--secondary);
}

.code-body {
  overflow: auto;
  flex: 1;
  background: #0d1117;
}

.code-body pre {
  padding: var(--sp-lg);
  margin: 0;
  font-family: var(--mono);
  font-size: var(--text-code);
  line-height: 1.75;
  color: var(--on-surface-dim);
  white-space: pre;
}

.cc { color: var(--outline); font-style: italic; }

/* ════════════════════════════
   RESEARCH & PUBLICATIONS
   ════════════════════════════ */
#research { background: var(--bg); border-top: 1px solid var(--outline-variant); }

.pub-card {
  background: var(--surface-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: border-color var(--t), box-shadow var(--t);
}
.pub-card:hover {
  border-color: var(--primary-container);
  box-shadow: 0 0 0 1px rgba(88,166,255,0.07), 0 8px 40px rgba(88,166,255,0.08);
}

.pub-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-lg);
  padding: var(--sp-lg);
  background: linear-gradient(135deg, rgba(88,166,255,0.05) 0%, transparent 55%);
  border-bottom: 1px solid var(--outline-variant);
}

.pub-header-main { flex: 1; min-width: 0; }

.pub-top-row {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  flex-wrap: wrap;
  margin-bottom: var(--sp-md);
}

.pub-badge-q1 {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-xs);
  background: rgba(88,166,255,0.12);
  border: 1px solid rgba(88,166,255,0.32);
  color: var(--primary);
  font-family: var(--mono);
  font-size: var(--text-badge);
  font-weight: 700;
  padding: 4px var(--sp-sm);
  border-radius: var(--r-full);
  letter-spacing: 0.03em;
}

.pub-badge-dot {
  width: 7px;
  height: 7px;
  background: var(--primary);
  border-radius: 50%;
  flex-shrink: 0;
  animation: pulse-ring 2s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
}

.pub-badge-dim {
  font-family: var(--mono);
  font-size: var(--text-badge);
  color: var(--outline);
  padding: 3px var(--sp-sm);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-full);
}

.pub-title {
  font-size: var(--text-headline-md);
  font-weight: 700;
  color: var(--on-surface);
  line-height: 1.4;
  margin-bottom: var(--sp-sm);
  letter-spacing: -0.01em;
}

.pub-authors {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  flex-wrap: wrap;
  font-size: var(--text-body-sm);
}

.pub-author-primary { font-weight: 700; color: var(--primary); }
.pub-sep { color: var(--outline-variant); }
.pub-author-collab { color: var(--on-surface-dim); }

.orcid-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  background: rgba(166,206,57,0.07);
  border: 1px solid rgba(166,206,57,0.22);
  border-radius: var(--r-md);
  padding: var(--sp-sm) var(--sp-md);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 11px;
  color: #a6ce39;
  white-space: nowrap;
  transition: background var(--t), border-color var(--t);
  flex-shrink: 0;
  align-self: flex-start;
}
.orcid-badge:hover { background: rgba(166,206,57,0.13); border-color: rgba(166,206,57,0.38); }

.orcid-id-box {
  background: #a6ce39;
  color: #0b141c;
  font-weight: 800;
  border-radius: 3px;
  padding: 2px 5px;
  font-size: 11px;
  letter-spacing: 0.02em;
}

.pub-abstract-block {
  padding: var(--sp-lg);
  border-bottom: 1px solid var(--outline-variant);
}

.pub-section-label {
  font-size: var(--text-label-caps);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--outline);
  margin-bottom: var(--sp-sm);
}

.pub-abstract-text {
  font-size: var(--text-body-md);
  color: var(--on-surface-dim);
  line-height: 1.8;
}

.pub-metrics-band {
  display: flex;
  align-items: center;
  padding: var(--sp-md) var(--sp-lg);
  border-bottom: 1px solid var(--outline-variant);
  background: var(--surface);
  gap: var(--sp-xl);
  overflow-x: auto;
}

.pub-metric { display: flex; flex-direction: column; gap: 2px; flex-shrink: 0; }

.pub-metric-num {
  font-family: var(--mono);
  font-size: var(--text-headline-md);
  font-weight: 700;
  color: var(--on-surface);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.pub-metric-lbl { font-size: 11px; color: var(--outline); }

.pub-metric-sep {
  width: 1px;
  height: 32px;
  background: var(--outline-variant);
  flex-shrink: 0;
}

.pub-bottom-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-md) var(--sp-lg);
  gap: var(--sp-md);
  flex-wrap: wrap;
}

.pub-keywords { display: flex; flex-wrap: wrap; gap: var(--sp-xs); }

.pub-kw {
  font-family: var(--mono);
  font-size: var(--text-badge);
  font-weight: 500;
  color: var(--primary);
  background: rgba(88,166,255,0.07);
  border: 1px solid rgba(88,166,255,0.18);
  padding: 3px var(--sp-sm);
  border-radius: var(--r);
  transition: background var(--t), border-color var(--t);
}
.pub-kw:hover { background: rgba(88,166,255,0.12); border-color: rgba(88,166,255,0.3); }

.pub-status-pending {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--tertiary);
  background: rgba(250,188,69,0.08);
  border: 1px solid rgba(250,188,69,0.22);
  padding: 4px var(--sp-sm);
  border-radius: var(--r-full);
  white-space: nowrap;
}

.pub-status-published {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--primary);
  background: rgba(88, 166, 255, 0.08);
  border: 1px solid rgba(88, 166, 255, 0.22);
  padding: 4px var(--sp-sm);
  border-radius: var(--r-full);
  white-space: nowrap;
}

/* ════════════════════════════
   RESPONSIVE
   ════════════════════════════ */
@media (max-width: 1024px) {
  .hero-code-card  { display: none; }
  .featured-inner  { grid-template-columns: 1fr; }
  .featured-right  { display: none; }
  .auto-cards-grid { grid-template-columns: 1fr 1fr; }
  .csa-dash-sidebar { width: 140px; }
  .csa-metrics { grid-template-columns: repeat(2, 1fr); }
  .csa-browser-content { height: 300px; }
}

@media (max-width: 768px) {
  nav { padding: var(--sp-sm) var(--sp-md); }

  .nav-links {
    position: fixed;
    top: 53px; left: 0; right: 0;
    background: rgba(11, 20, 28, 0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    gap: 0;
    padding: var(--sp-sm);
    border-bottom: 1px solid var(--outline-variant);
    transform: translateY(-110%);
    transition: transform 0.25s ease;
    z-index: 99;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: var(--sp-sm); border-radius: var(--r); width: 100%; display: block; }
  .hamburger { display: flex; }

  #hero { padding: 6rem var(--sp-md) var(--sp-xl); }
  .hero-stats { gap: var(--sp-md); }
  .hero-scroll-hint { display: none; }

  section { padding: 4rem 0; }
  .container { padding: 0 var(--sp-md); }

  #scroll-reveal { padding: var(--sp-xl) 0 0; }
  .csa-header { padding: 0 var(--sp-md) var(--sp-lg); }
  .csa-container { padding: 0 var(--sp-md) 0; }
  .csa-dash-sidebar { display: none; }
  .csa-metrics { grid-template-columns: repeat(2, 1fr); }
  .csa-browser-content { height: 260px; }

  .about-grid { grid-template-columns: 1fr; gap: var(--sp-lg); }
  .about-avatar-col { flex-direction: row; gap: var(--sp-lg); align-items: flex-start; flex-wrap: wrap; }
  .about-avatar { width: 72px; height: 72px; }
  .avatar-initials { width: 72px; height: 72px; font-size: 1rem; }

  .auto-cards-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .feat-stats { grid-template-columns: repeat(2, 1fr); }
  .impact-grid { grid-template-columns: 1fr; }
  .flow-steps { gap: 3px; }
  .flow-step { min-width: 60px; padding: 3px var(--sp-xs); }

  .pub-card-header { flex-direction: column; }
  .pub-metrics-band { flex-wrap: wrap; gap: var(--sp-lg); }
  .pub-metric-sep { display: none; }
  .pub-bottom-row { flex-direction: column; align-items: flex-start; }
  .orcid-badge { align-self: auto; }
}