/* ============================================================
   ChaosLab — Design System
   Dark technical / distributed-systems observability aesthetic
   ============================================================ */

:root {
  --bg: #090c12;
  --bg-alt: #0c1119;
  --surface: #10151f;
  --surface-2: #141b28;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #e6e9ef;
  --text-dim: #8b95a7;
  --text-faint: #5b6478;

  --accent: #22d3ee;
  --accent-dim: #22d3ee33;
  --accent-2: #4ade80;
  --accent-2-dim: #4ade8033;
  --danger: #f87171;
  --danger-dim: #f8717133;
  --warn: #fbbf24;

  --mono: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --radius: 10px;
  --radius-sm: 6px;
  --container: 1180px;

  --glow: 0 0 0 1px var(--border), 0 8px 30px rgba(0, 0, 0, 0.4);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  position: relative;
}

/* -------------------- background grid + glow -------------------- */

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 90%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 90%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(600px 400px at 15% 0%, rgba(34, 211, 238, 0.08), transparent 60%),
    radial-gradient(600px 400px at 85% 10%, rgba(74, 222, 128, 0.06), transparent 60%);
}

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

ul {
  list-style: none;
}

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

section {
  padding: 108px 0;
  position: relative;
}

@media (max-width: 720px) {
  section {
    padding: 72px 0;
  }
}

/* -------------------- typography helpers -------------------- */

.mono {
  font-family: var(--mono);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}

.section-label::before {
  content: "//";
  color: var(--text-faint);
}

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.section-head h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 650;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}

.section-head p {
  color: var(--text-dim);
  font-size: 1.02rem;
}

.eyebrow-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.02);
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 8px var(--accent-2);
}

/* -------------------- buttons -------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: 13px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--accent);
  color: #04141a;
  font-weight: 600;
  box-shadow: 0 0 0 1px var(--accent-dim), 0 10px 30px -8px rgba(34, 211, 238, 0.5);
}

.btn-primary:hover {
  box-shadow: 0 0 0 1px var(--accent), 0 10px 30px -6px rgba(34, 211, 238, 0.65);
}

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

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

.btn-sm {
  padding: 9px 16px;
  font-size: 12.5px;
}

.btn-block {
  width: 100%;
}

.btn:disabled,
.btn.is-disabled {
  opacity: 0.45;
  cursor: not-allowed;
  filter: grayscale(0.3);
}

/* ============================================================
   Navbar
   ============================================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(9, 12, 18, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.brand .bracket {
  color: var(--accent);
}

.brand .cursor {
  width: 8px;
  height: 17px;
  background: var(--accent);
  display: inline-block;
  animation: blink 1.1s steps(1) infinite;
  border-radius: 1px;
}

@keyframes blink {
  50% { opacity: 0; }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
  font-size: 14.5px;
  color: var(--text-dim);
}

.nav-links a {
  position: relative;
  padding: 4px 0;
  transition: color 0.15s ease;
}

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

.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  z-index: 99;
  padding: 10px 28px 26px;
}

.mobile-menu a {
  display: block;
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 15px;
}

.mobile-menu.open {
  display: block;
}

@media (max-width: 860px) {
  .nav-links {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-right .btn-ghost.admin-link-desktop {
    display: none;
  }
}

/* ============================================================
   Hero
   ============================================================ */

.hero {
  padding: 168px 0 90px;
  text-align: center;
}

.hero h1 {
  font-family: var(--mono);
  font-size: clamp(2.6rem, 8vw, 5.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(180deg, #ffffff 0%, #b9c2d0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.02;
}

.hero .subtitle {
  margin: 22px auto 0;
  max-width: 700px;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 500;
  color: var(--text);
}

.hero .subtitle .accent {
  color: var(--accent);
}

.hero .desc {
  margin: 20px auto 0;
  max-width: 620px;
  color: var(--text-dim);
  font-size: 1rem;
}

.hero .desc code {
  font-family: var(--mono);
  color: var(--text);
}

.hero-actions {
  margin-top: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* -------------------- hero pipeline strip -------------------- */

.pipeline {
  margin: 78px auto 0;
  max-width: 980px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}

.pipeline-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  min-width: 108px;
}

.pipeline-node .box {
  width: 84px;
  height: 84px;
  border-radius: 14px;
  border: 1px solid var(--border-strong);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: var(--glow);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.pipeline-node:hover .box {
  border-color: var(--accent);
}

.pipeline-node .label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--text-dim);
  text-align: center;
}

.pipeline-node.verdict .box {
  border-color: var(--accent-2);
}

.pipeline-node.verdict .label {
  color: var(--accent-2);
}

.pipeline-arrow {
  width: 42px;
  height: 2px;
  position: relative;
  background: linear-gradient(90deg, var(--border-strong), var(--border-strong));
  margin: 0 2px;
  align-self: center;
  margin-top: -22px;
  overflow: hidden;
}

.pipeline-arrow::after {
  content: "";
  position: absolute;
  top: 0;
  left: -30%;
  width: 30%;
  height: 100%;
  background: var(--accent);
  animation: travel 2.4s linear infinite;
}

@keyframes travel {
  0% { left: -30%; }
  100% { left: 100%; }
}

@media (max-width: 760px) {
  .pipeline {
    flex-direction: column;
    gap: 14px;
  }
  .pipeline-arrow {
    width: 2px;
    height: 30px;
    margin-top: 0;
    background: var(--border-strong);
  }
  .pipeline-arrow::after {
    top: -30%;
    left: 0;
    width: 100%;
    height: 30%;
    animation: travel-v 2.4s linear infinite;
  }
  @keyframes travel-v {
    0% { top: -30%; }
    100% { top: 100%; }
  }
}

/* ============================================================
   Terminal / log block
   ============================================================ */

.terminal {
  background: #060a10;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--glow);
  overflow: hidden;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.terminal-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #3a4152;
}

.terminal-bar .title {
  margin-left: 8px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
}

.terminal-body {
  padding: 20px 22px;
  font-family: var(--mono);
  font-size: 13.4px;
  line-height: 1.85;
  color: var(--text-dim);
  overflow-x: auto;
}

.terminal-body .l-fail { color: var(--danger); }
.terminal-body .l-warn { color: var(--warn); }
.terminal-body .l-ok { color: var(--accent-2); }
.terminal-body .l-dim { color: var(--text-faint); }
.terminal-body .l-accent { color: var(--accent); }

/* ============================================================
   Cards / grids
   ============================================================ */

.grid {
  display: grid;
  gap: 20px;
}

.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

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

.card .icon {
  width: 40px;
  height: 40px;
  border-radius: 9px;
  background: var(--accent-dim);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 16px;
  font-family: var(--mono);
}

.card h3 {
  font-size: 1.04rem;
  margin-bottom: 8px;
  font-weight: 600;
}

.card p {
  color: var(--text-dim);
  font-size: 0.92rem;
}

/* ============================================================
   Reveal-on-scroll
   ============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   Architecture diagram (shared component)
   ============================================================ */

.arch-diagram {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 46px 30px;
  box-shadow: var(--glow);
}

.arch-tier-label {
  text-align: center;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 14px;
}

.arch-node-row {
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.arch-node {
  font-family: var(--mono);
  font-size: 13px;
  border: 1px solid var(--border-strong);
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  padding: 13px 18px;
  text-align: center;
  min-width: 150px;
  color: var(--text);
}

.arch-node.center {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-dim), 0 0 24px -6px rgba(34, 211, 238, 0.5);
}

.arch-node.verdict {
  border-color: var(--accent-2);
  color: var(--accent-2);
}

.arch-node small {
  display: block;
  font-family: var(--sans);
  color: var(--text-faint);
  font-size: 11px;
  margin-top: 4px;
  font-weight: 400;
}

.arch-connector {
  width: 2px;
  height: 30px;
  background: var(--border-strong);
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}

.arch-connector::after {
  content: "";
  position: absolute;
  top: -40%;
  left: 0;
  width: 100%;
  height: 40%;
  background: var(--accent);
  animation: travel-v2 2s linear infinite;
}

@keyframes travel-v2 {
  0% { top: -40%; }
  100% { top: 100%; }
}

.arch-branch {
  position: relative;
  height: 30px;
  margin: 0 auto;
}

.arch-external {
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px dashed var(--border-strong);
}

.arch-external-row {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.ext-chip {
  font-family: var(--mono);
  font-size: 12px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  background: var(--bg-alt);
}

/* ============================================================
   Team
   ============================================================ */

.team-card {
  text-align: left;
}

.avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #04141a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 16px;
}

.team-card h3 {
  margin-bottom: 2px;
}

.team-card .role {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

/* ============================================================
   Status / stepper
   ============================================================ */

.stepper {
  display: flex;
  align-items: center;
  max-width: 640px;
  margin: 0 auto 20px;
}

.step {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-faint);
}

.step .node {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--border-strong);
  background: var(--bg);
}

.step.done .node {
  background: var(--accent-2);
  border-color: var(--accent-2);
  box-shadow: 0 0 10px var(--accent-2);
}

.step.active .node {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}

.step.done, .step.active {
  color: var(--text);
}

.step-line {
  flex: 1;
  height: 2px;
  background: var(--border-strong);
  margin: 0 12px;
}

.step-line.done {
  background: var(--accent-2);
}

.status-note {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.94rem;
}

.status-note strong {
  color: var(--text);
}

/* ============================================================
   Footer
   ============================================================ */

footer {
  border-top: 1px solid var(--border);
  padding: 44px 0;
  margin-top: 40px;
}

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

.footer-brand {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--text);
}

.footer-meta {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-faint);
  text-align: right;
}

/* ============================================================
   Page header (interior pages)
   ============================================================ */

.page-header {
  padding: 150px 0 50px;
  border-bottom: 1px solid var(--border);
}

.page-header h1 {
  font-family: var(--mono);
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-header p {
  margin-top: 14px;
  color: var(--text-dim);
  max-width: 640px;
  font-size: 1.02rem;
}

.breadcrumb {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-faint);
  margin-bottom: 18px;
}

.breadcrumb a:hover {
  color: var(--accent);
}

/* -------------------- content blocks -------------------- */

.content-block {
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
}

.content-block:last-of-type {
  border-bottom: none;
}

.content-block h2 {
  font-size: 1.5rem;
  font-weight: 650;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.content-block h2 .num {
  font-family: var(--mono);
  color: var(--accent);
  font-size: 1rem;
}

.content-block p {
  color: var(--text-dim);
  max-width: 760px;
  margin-bottom: 14px;
}

.content-block ul.check-list li,
.content-block ul.bullet-list li {
  color: var(--text-dim);
  margin-bottom: 10px;
  padding-left: 24px;
  position: relative;
  max-width: 760px;
}

.content-block ul.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent-2);
  font-family: var(--mono);
}

.content-block ul.bullet-list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--mono);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

@media (max-width: 760px) {
  .two-col {
    grid-template-columns: 1fr;
  }
}

.callout {
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--accent);
  background: var(--surface);
  border-radius: var(--radius-sm);
  padding: 20px 22px;
  margin: 22px 0;
  max-width: 760px;
}

.callout.warn {
  border-left-color: var(--warn);
}

.callout p {
  margin-bottom: 0;
  color: var(--text-dim);
  font-size: 0.94rem;
}

.callout strong {
  color: var(--text);
}

/* table */

table.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin-top: 10px;
}

table.spec-table th,
table.spec-table td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
}

table.spec-table th {
  font-family: var(--mono);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
}

table.spec-table td:first-child,
table.spec-table th:first-child {
  color: var(--text);
}

/* ============================================================
   Presentations archive
   ============================================================ */

.doc-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.doc-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 26px;
  flex-wrap: wrap;
}

.doc-card:hover {
  border-color: var(--border-strong);
}

.doc-main {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.doc-icon {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  color: var(--accent);
  flex-shrink: 0;
}

.doc-title {
  font-weight: 600;
  margin-bottom: 4px;
}

.doc-meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.badge {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid;
}

.badge-published {
  color: var(--accent-2);
  border-color: var(--accent-2-dim);
  background: var(--accent-2-dim);
}

.badge-draft {
  color: var(--warn);
  border-color: #fbbf2433;
  background: #fbbf2422;
}

.badge-planned {
  color: var(--text-faint);
  border-color: var(--border-strong);
  background: transparent;
}

.doc-actions {
  display: flex;
  gap: 10px;
}

.version-hint {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-faint);
  margin-top: 20px;
}

/* ============================================================
   Auth pages
   ============================================================ */

.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 100px 20px 60px;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  box-shadow: var(--glow);
}

.auth-card .brand {
  justify-content: center;
  margin-bottom: 6px;
}

.auth-card .auth-sub {
  text-align: center;
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 12.5px;
  margin-bottom: 30px;
}

.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  background: var(--bg-alt);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 11px 13px;
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  transition: border-color 0.15s ease;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--accent);
}

.field-note {
  font-size: 11.5px;
  color: var(--text-faint);
  margin-top: 6px;
}

.form-msg {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  border: 1px solid var(--warn);
  background: #fbbf2415;
  color: var(--warn);
  display: none;
}

.form-msg.show {
  display: block;
}

/* ============================================================
   Admin dashboard
   ============================================================ */

.admin-shell {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 240px;
  flex-shrink: 0;
  background: var(--bg-alt);
  border-right: 1px solid var(--border);
  padding: 100px 22px 24px;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
}

.admin-sidebar nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-size: 14px;
  margin-bottom: 4px;
}

.admin-sidebar nav a:hover {
  background: var(--surface);
  color: var(--text);
}

.admin-sidebar nav a.active {
  background: var(--accent-dim);
  color: var(--accent);
}

.admin-main {
  margin-left: 240px;
  flex: 1;
  padding: 100px 40px 60px;
  max-width: 1000px;
}

@media (max-width: 900px) {
  .admin-sidebar { display: none; }
  .admin-main { margin-left: 0; padding: 100px 22px 60px; }
}

.mock-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #fbbf2415;
  border: 1px solid #fbbf2455;
  color: var(--warn);
  font-family: var(--mono);
  font-size: 12.5px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 34px;
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 16px;
}

.dashboard-header h1 {
  font-size: 1.7rem;
  font-weight: 650;
}

.dashboard-header p {
  color: var(--text-dim);
  margin-top: 6px;
  font-size: 0.94rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 26px 30px;
  margin-bottom: 24px;
}

.panel h2 {
  font-size: 1.05rem;
  margin-bottom: 20px;
  font-weight: 600;
}

.dropzone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 44px 20px;
  text-align: center;
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.dropzone.drag-over {
  border-color: var(--accent);
  background: var(--accent-dim);
  color: var(--accent);
}

.dropzone .dz-icon {
  font-size: 26px;
  margin-bottom: 10px;
}

.file-list {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.file-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 13px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-dim);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr; }
}

.form-grid .field.full {
  grid-column: 1 / -1;
}

.table-wrap {
  overflow-x: auto;
}

table.version-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

table.version-table th {
  text-align: left;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-faint);
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-strong);
}

table.version-table td {
  padding: 13px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
}

table.version-table td:first-child {
  color: var(--text);
}

.row-actions a {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  margin-right: 14px;
}

.row-actions a.disabled {
  color: var(--text-faint);
  cursor: not-allowed;
  pointer-events: none;
}

/* ============================================================
   Tree / org-chart diagram (Architecture page)
   ============================================================ */

.tree-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.tree-node {
  font-family: var(--mono);
  font-size: 13.5px;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  text-align: center;
  color: var(--text);
  min-width: 170px;
}

.tree-node small {
  display: block;
  font-family: var(--sans);
  color: var(--text-faint);
  font-size: 11px;
  margin-top: 5px;
  font-weight: 400;
  line-height: 1.4;
}

.tree-node.root {
  border-color: var(--accent);
  color: var(--accent);
  font-size: 16px;
  font-weight: 700;
  box-shadow: 0 0 0 1px var(--accent-dim), 0 0 30px -8px rgba(34, 211, 238, 0.55);
}

.tree-node.merge {
  border-color: var(--accent);
  color: var(--accent);
}

.tree-node.pass {
  border-color: var(--accent-2);
  color: var(--accent-2);
  min-width: 140px;
}

.tree-node.fail {
  border-color: var(--danger);
  color: var(--danger);
  min-width: 140px;
}

.tree-stem {
  width: 2px;
  height: 30px;
  background: var(--border-strong);
  position: relative;
  overflow: hidden;
}

.tree-stem::after {
  content: "";
  position: absolute;
  top: -50%;
  left: 0;
  width: 100%;
  height: 50%;
  background: var(--accent);
  animation: travel-v2 2.2s linear infinite;
}

.tree-hbar-wrap {
  width: 100%;
  max-width: 640px;
}

.tree-hbar {
  height: 2px;
  background: var(--border-strong);
  width: 100%;
}

.tree-row-3,
.tree-row-2 {
  width: 100%;
  max-width: 640px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.tree-row-2.verdict-row {
  max-width: 360px;
  justify-content: center;
  gap: 40px;
}

.tree-branch {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
}

.tree-branch .tree-stem {
  height: 26px;
}

@media (max-width: 760px) {
  .tree-row-3 {
    flex-direction: column;
    align-items: center;
    gap: 26px;
    max-width: none;
  }
  .tree-hbar-wrap {
    display: none;
  }
  .tree-branch .tree-stem {
    height: 20px;
  }
}

.tree-explain {
  margin-top: 60px;
}