/* ═══════════════════════════════════════════════
   OMNISCALE · project.css
   Palette pulled from the product itself, not the
   portfolio's default blue/violet: deep server-room
   navy + electric indigo "AI agent" accent + a single
   cold cyan for live-monitoring / telemetry moments.
═══════════════════════════════════════════════ */

:root {
  --os-void:     #06070c;
  --os-indigo:   #7c8aff;
  --os-indigo-2: #5b67d9;
  --os-cyan:     #4fd6e0;
  --os-ink-1:    #eef0f7;
  --os-ink-2:    #9a9fb3;
  --os-ink-3:    #61657a;
  --os-line:     rgba(238, 240, 247, 0.09);
  --os-line-2:   rgba(238, 240, 247, 0.16);
  --os-panel:    rgba(235, 238, 255, 0.03);
  --os-glow:     rgba(124, 138, 255, 0.35);
}

/* ── BACK BUTTON ──────────────────────────────── */
.back-wrap {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  margin: 0 auto;
  padding: 88px 36px 0;
}
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 500;
  font-family: var(--f-mono);
  letter-spacing: .02em;
  color: var(--os-ink-2);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 7px;
  border: 1px solid var(--os-line);
  background: var(--os-panel);
  backdrop-filter: blur(12px);
  transition: color .2s, border-color .2s, transform .2s;
}
.back-btn:hover {
  color: var(--os-ink-1);
  border-color: var(--os-indigo-2);
  transform: translateX(-3px);
}

/* ── HERO ─────────────────────────────────────── */
.proj-hero {
  max-width: 1120px;
  margin: 0 auto;
  padding: 44px 36px 64px;
  position: relative;
  z-index: 1;
}
.proj-hero-inner { max-width: 780px; }

.proj-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}
.proj-category {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--os-cyan);
  letter-spacing: .16em;
  text-transform: uppercase;
}
.proj-category::before {
  content: '● ';
  color: var(--os-cyan);
}
.proj-badges { display: flex; gap: 8px; flex-wrap: wrap; }
.badge-year, .badge-team, .badge-uni {
  font-family: var(--f-mono);
  font-size: 10.5px;
  padding: 3px 10px;
  border-radius: 4px;
  border: 1px solid var(--os-line-2);
  color: var(--os-ink-2);
}

.proj-title {
  font-family: var(--f-display);
  font-size: clamp(52px, 9vw, 104px);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: .92;
  margin-bottom: 22px;
  color: var(--os-ink-1);
}
.proj-title span {
  background: linear-gradient(120deg, var(--os-indigo) 0%, #a6b0ff 55%, var(--os-indigo-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.proj-tagline {
  font-size: 16.5px;
  color: var(--os-ink-2);
  line-height: 1.75;
  max-width: 580px;
  margin-bottom: 34px;
}

.proj-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

/* stats — rendered like a live telemetry strip */
.proj-stats {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
  padding: 22px 26px;
  background: linear-gradient(180deg, rgba(124,138,255,0.06), transparent 60%), var(--os-panel);
  border: 1px solid var(--os-line);
  border-radius: 14px;
  width: fit-content;
  position: relative;
  overflow: hidden;
}
.proj-stats::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--os-glow), transparent);
}
.ps { text-align: center; padding: 0 26px; }
.ps-n {
  font-family: var(--f-mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--os-ink-1);
  margin-bottom: 3px;
}
.ps-l {
  font-size: 10.5px;
  color: var(--os-ink-3);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.ps-sep { width: 1px; height: 30px; background: var(--os-line); flex-shrink: 0; }

/* ── GALLERY ──────────────────────────────────── */
.gallery-section { position: relative; z-index: 1; padding: 0 0 76px; }
.gallery-grid {
  max-width: 1120px;
  margin: 30px auto 0;
  padding: 0 36px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.gallery-item {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--os-line);
  aspect-ratio: 16/9;
  background: #000;
  transition: border-color .25s, transform .25s, box-shadow .25s;
}
.gallery-item::after {
  content: '';
  position: absolute;
  inset: 8px;
  border-radius: 4px;
  border: 1px solid transparent;
  pointer-events: none;
  transition: border-color .25s, inset .25s;
}
.gallery-item:hover {
  border-color: var(--os-indigo-2);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0,0,0,.4), 0 0 0 1px rgba(124,138,255,.15);
}
.gallery-item:hover::after {
  border-color: rgba(124,138,255,.55);
  inset: 6px;
}
.gallery-main { aspect-ratio: 16/9; }
.gallery-wide { aspect-ratio: 16/9; }
.gallery-item img {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(.96);
  transition: transform .5s cubic-bezier(.4,0,.2,1), filter .3s;
  display: block;
}
.gallery-item:hover img { transform: scale(1.04); filter: saturate(1.05); }
.gallery-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(4,5,10,.92) 0%, transparent 55%);
  display: flex; align-items: flex-end; justify-content: space-between;
  padding: 14px 16px;
  opacity: 0;
  transition: opacity .3s;
}
.gallery-item:hover .gallery-overlay { opacity: 1; }
.gallery-overlay span {
  font-size: 12.5px; font-weight: 500; color: var(--os-ink-1);
  font-family: var(--f-mono);
}
.gallery-overlay svg { color: var(--os-indigo); flex-shrink: 0; }

/* ── LIGHTBOX ─────────────────────────────────── */
.lightbox {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(3,4,8,0.97);
  backdrop-filter: blur(18px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity .3s ease;
}
.lightbox.open { opacity: 1; pointer-events: all; }
.lightbox img {
  max-width: 90vw; max-height: 85vh;
  border-radius: 12px;
  border: 1px solid var(--os-line-2);
  box-shadow: 0 32px 80px rgba(0,0,0,.6), 0 0 60px rgba(124,138,255,.1);
  object-fit: contain;
}
.lb-close {
  position: absolute; top: 24px; right: 28px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--os-line-2);
  color: var(--os-ink-2);
  font-size: 16px; width: 40px; height: 40px;
  border-radius: 50%; cursor: pointer;
  transition: color .2s, border-color .2s;
  display: flex; align-items: center; justify-content: center;
}
.lb-close:hover { color: var(--os-indigo); border-color: var(--os-indigo-2); }
.lb-prev, .lb-next {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(255,255,255,.04);
  border: 1px solid var(--os-line-2);
  color: var(--os-ink-1);
  font-size: 26px; width: 46px; height: 46px;
  border-radius: 50%; cursor: pointer;
  transition: background .2s, border-color .2s;
  display: flex; align-items: center; justify-content: center;
  line-height: 1;
}
.lb-prev { left: 24px; }
.lb-next { right: 24px; }
.lb-prev:hover, .lb-next:hover {
  background: rgba(124,138,255,.12);
  border-color: var(--os-indigo-2);
}
.lb-caption {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  font-size: 12.5px; color: var(--os-ink-2);
  font-family: var(--f-mono);
  background: rgba(255,255,255,.04);
  padding: 6px 16px; border-radius: 999px;
  border: 1px solid var(--os-line-2);
  white-space: nowrap;
}

/* ── SHARED SECTION STYLES ────────────────────── */
.section-wrap {
  max-width: 1120px; margin: 0 auto; padding: 0 36px;
  position: relative; z-index: 1;
}
.content-section { padding-top: 76px; padding-bottom: 36px; }

.section-label {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--os-cyan);
  letter-spacing: .16em;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: block;
}
.section-h2 {
  font-family: var(--f-display);
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.08;
  margin-bottom: 38px;
  color: var(--os-ink-1);
}
.grad {
  background: linear-gradient(120deg, var(--os-indigo), #a6b0ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.body-text {
  font-size: 15px; color: var(--os-ink-2); line-height: 1.85;
  margin-bottom: 16px; max-width: 540px;
}
.body-text em { color: var(--os-ink-1); font-style: normal; }

/* ── TWO COL ──────────────────────────────────── */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 68px; align-items: start; }

/* ── FEATURE LIST ─────────────────────────────── */
.feature-list { display: flex; flex-direction: column; gap: 12px; }
.feat-item {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 15px 17px;
  border-radius: 10px;
  background: var(--os-panel);
  border: 1px solid var(--os-line);
  border-left: 2px solid transparent;
  transition: border-color .2s, background .2s;
}
.feat-item:hover {
  border-left-color: var(--os-indigo);
  background: rgba(124,138,255,.04);
}
.feat-icon { font-size: 18px; flex-shrink: 0; margin-top: 1px; filter: saturate(0.9); }
.feat-title { font-size: 13.5px; font-weight: 600; margin-bottom: 3px; color: var(--os-ink-1); }
.feat-desc { font-size: 12.5px; color: var(--os-ink-2); line-height: 1.55; }

/* ── TECH GRID ────────────────────────────────── */
.tech-section {
  position: relative; z-index: 1;
  padding: 76px 0 36px;
  background: radial-gradient(ellipse 60% 100% at 15% 0%, rgba(124,138,255,0.06), transparent 60%),
              radial-gradient(ellipse 60% 100% at 85% 100%, rgba(79,214,224,0.04), transparent 60%);
  border-top: 1px solid var(--os-line);
  border-bottom: 1px solid var(--os-line);
  margin: 36px 0;
}
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(236px, 1fr));
  gap: 12px;
  margin-top: 8px;
}
.tech-card {
  padding: 20px 18px;
  background: var(--os-panel);
  border: 1px solid var(--os-line);
  border-radius: 10px;
  border-left: 2px solid var(--os-line-2);
  transition: border-color .25s, transform .25s, background .25s;
  position: relative;
}
.tech-card:hover {
  border-color: var(--os-line);
  border-left-color: var(--os-indigo);
  background: rgba(124,138,255,.035);
  transform: translateY(-2px);
}
.tech-card-icon { font-size: 20px; margin-bottom: 10px; opacity: .9; }
.tech-card-name {
  font-family: var(--f-mono); font-size: 13.5px; font-weight: 500;
  color: var(--os-ink-1); margin-bottom: 8px;
}
.tech-card-desc { font-size: 12.5px; color: var(--os-ink-2); line-height: 1.6; }

/* ── ARCHITECTURE CARDS ───────────────────────── */
.arch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(316px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}
.arch-card {
  padding: 22px;
  background: var(--os-panel);
  border: 1px solid var(--os-line);
  border-radius: 10px;
  transition: border-color .25s;
}
.arch-card:hover { border-color: rgba(79,214,224,.3); }
.arch-num {
  font-family: var(--f-mono); font-size: 11px; color: var(--os-cyan);
  letter-spacing: .1em; margin-bottom: 8px;
}
.arch-title { font-size: 15px; font-weight: 600; margin-bottom: 10px; color: var(--os-ink-1); }
.arch-desc { font-size: 13px; color: var(--os-ink-2); line-height: 1.7; margin-bottom: 14px; }

/* ── CODE BLOCK — styled like a real terminal ─── */
.code-block {
  background: #050507;
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 8px;
  padding: 30px 16px 14px;
  overflow-x: auto;
  position: relative;
}
.code-block::before {
  content: '';
  position: absolute;
  top: 12px; left: 14px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #d9695a;
  box-shadow: 14px 0 0 #d9a441, 28px 0 0 #3fb885;
}
.code-block pre {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--os-indigo);
  line-height: 1.65;
  margin: 0;
  white-space: pre;
  opacity: .92;
}
code {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--os-cyan);
  background: rgba(79,214,224,.08);
  padding: 1px 6px;
  border-radius: 4px;
}

/* ── FEATURE CHECKLIST GRID ───────────────────── */
.controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 8px;
}
.ctrl {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px;
  background: var(--os-panel);
  border: 1px solid var(--os-line);
  border-radius: 8px;
  font-size: 13px;
  color: var(--os-ink-2);
  line-height: 1.4;
}
kbd {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 30px; height: 26px; padding: 0 8px;
  background: rgba(79,214,224,.08);
  border: 1px solid rgba(79,214,224,.25);
  border-radius: 5px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  color: var(--os-cyan);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── TABLE (tech-choice rationale) ────────────── */
.rationale-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--os-panel);
  border: 1px solid var(--os-line);
  border-radius: 10px;
  overflow: hidden;
  font-size: 13px;
}
.rationale-table th {
  text-align: left;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--os-ink-3);
  background: rgba(124,138,255,.05);
  padding: 12px 16px;
  border-bottom: 1px solid var(--os-line);
}
.rationale-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--os-line);
  color: var(--os-ink-2);
  vertical-align: top;
}
.rationale-table tr:last-child td { border-bottom: none; }
.rationale-table td:first-child { color: var(--os-ink-1); font-family: var(--f-mono); font-weight: 500; white-space: nowrap; }

/* ── BUILD STEPS ──────────────────────────────── */
.build-steps {
  background: var(--os-panel);
  border: 1px solid var(--os-line);
  border-radius: 12px;
  overflow: hidden;
}
.build-req { padding: 18px 22px; border-bottom: 1px solid var(--os-line); }
.req-title {
  font-family: var(--f-mono); font-size: 10.5px; color: var(--os-ink-3);
  letter-spacing: .1em; text-transform: uppercase; margin-bottom: 11px;
}
.req-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.req-pill {
  font-size: 12px; font-family: var(--f-mono);
  padding: 4px 11px; border-radius: 999px;
  background: rgba(124,138,255,.08);
  border: 1px solid rgba(124,138,255,.22);
  color: var(--os-indigo);
}
.step-list { padding: 6px 0; }
.step { display: flex; gap: 18px; padding: 15px 22px; border-bottom: 1px solid var(--os-line); }
.step:last-child { border-bottom: none; }
.step-n {
  width: 26px; height: 26px; border-radius: 50%;
  background: rgba(124,138,255,.1);
  border: 1px solid rgba(124,138,255,.28);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--f-mono); font-size: 11px; color: var(--os-indigo);
  flex-shrink: 0; margin-top: 2px;
}
.step-title { font-size: 13.5px; font-weight: 600; margin-bottom: 10px; color: var(--os-ink-1); }
.step-content { flex: 1; }
.step .code-block { margin-top: 0; }

/* ── META STRIP (version / license / status) ──── */
.meta-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 8px;
}
.meta-item {
  padding: 14px 16px;
  background: var(--os-panel);
  border: 1px solid var(--os-line);
  border-radius: 8px;
}
.meta-k {
  font-family: var(--f-mono); font-size: 10px; color: var(--os-ink-3);
  letter-spacing: .08em; text-transform: uppercase; margin-bottom: 5px;
}
.meta-v { font-size: 13.5px; color: var(--os-ink-1); font-weight: 600; }
.meta-v.status-live { color: var(--os-cyan); }
.meta-v.status-live::before { content: '● '; font-size: 10px; }

/* ── PROJ NAV ROW ─────────────────────────────── */
.proj-nav-row { padding-top: 36px; padding-bottom: 76px; display: flex; justify-content: flex-start; }
.proj-nav-btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 500; font-family: var(--f-mono);
  color: var(--os-ink-2); text-decoration: none;
  padding: 10px 18px; border-radius: 8px;
  border: 1px solid var(--os-line);
  background: var(--os-panel);
  transition: color .2s, border-color .2s;
}
.proj-nav-btn:hover { color: var(--os-ink-1); border-color: var(--os-indigo-2); }

/* ── RESPONSIVE ───────────────────────────────── */
@media (max-width: 900px) {
  .back-wrap, .proj-hero { padding-left: 20px; padding-right: 20px; }
  .gallery-grid { padding: 0 20px; grid-template-columns: 1fr 1fr; gap: 14px; }
  .gallery-item { aspect-ratio: 16/10; }
  .two-col { grid-template-columns: 1fr; gap: 36px; }
  .proj-stats { flex-wrap: wrap; justify-content: center; }
  .section-wrap { padding-left: 20px; padding-right: 20px; }
  .arch-grid { grid-template-columns: 1fr; }
  .controls-grid { grid-template-columns: 1fr 1fr; }
  .rationale-table { font-size: 12px; }
  .rationale-table th, .rationale-table td { padding: 10px 12px; }
}
@media (max-width: 500px) {
  .gallery-grid { grid-template-columns: 1fr; gap: 10px; }
  .gallery-item { aspect-ratio: 4/3; }
  .controls-grid { grid-template-columns: 1fr; }
  .proj-title { font-size: 50px; }
  .rationale-table { display: block; overflow-x: auto; white-space: nowrap; }
}

/* ── ACCESSIBILITY ────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  * { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--os-indigo);
  outline-offset: 2px;
}