/* DraughtAI demo console — dark blueprint workstation */
:root {
  --d-bg: #050912;
  --d-bg-1: #0b1120;
  --d-bg-2: #0f172a;
  --d-bg-3: #1e293b;
  --d-line: #1e293b;
  --d-line-2: #334155;
  --d-ink: #e2e8f0;
  --d-ink-soft: #94a3b8;
  --d-ink-mute: #64748b;
  --d-brand: #38bdf8;
  --d-brand-2: #0ea5e9;
  --d-accent: #fbbf24;
  --d-accent-2: #f97316;
  --d-good: #4ade80;
  --d-warn: #fb923c;
  --d-bad: #f87171;
  --d-glow: 0 0 0 1px rgba(56,189,248,.35), 0 6px 30px -8px rgba(56,189,248,.45);
  --d-radius: 12px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  background: var(--d-bg);
  color: var(--d-ink);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}
body::before {
  content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(56,189,248,.12), transparent 60%),
    radial-gradient(800px 400px at 10% 110%, rgba(251,191,36,.08), transparent 60%),
    linear-gradient(180deg, #050912 0%, #0b1120 100%);
}
body::after {
  content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(rgba(56,189,248,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56,189,248,.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 30%, transparent 80%);
}

.console {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 280px 1fr; height: 100vh;
}

/* === Sidebar === */
.sidebar {
  position: relative;
  background:
    linear-gradient(180deg, rgba(56,189,248,.05), rgba(11,17,32,.7) 30%);
  backdrop-filter: blur(24px) saturate(150%);
  -webkit-backdrop-filter: blur(24px) saturate(150%);
  display: flex; flex-direction: column;
  padding: 20px 0;
}
.sidebar::after {
  content: ''; position: absolute; right: 0; top: 0; bottom: 0; width: 1px;
  background: linear-gradient(180deg, transparent, rgba(56,189,248,.4) 20%, rgba(56,189,248,.1) 60%, transparent);
}
.brand {
  display: flex; align-items: center; gap: 12px;
  padding: 4px 24px 28px;
  text-decoration: none; color: var(--d-ink);
}
.brand-mark {
  width: 38px; height: 38px; border-radius: 9px;
  background: linear-gradient(135deg, var(--d-brand) 0%, var(--d-brand-2) 100%);
  display: grid; place-items: center;
  font-weight: 800; color: #050912; font-size: 1.1rem;
  box-shadow: 0 0 24px rgba(56,189,248,.4);
}
.brand-text { display: flex; flex-direction: column; }
.brand-text strong { font-size: 1.05rem; letter-spacing: -0.01em; }
.brand-text small { color: var(--d-ink-soft); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; }

.nav-section {
  padding: 16px 14px 8px 24px;
  font-size: .68rem; letter-spacing: .15em; text-transform: uppercase;
  color: var(--d-ink-mute);
}
.nav { display: flex; flex-direction: column; gap: 2px; padding: 0 12px; }
.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px; border-radius: 8px;
  color: var(--d-ink-soft); cursor: pointer;
  font-size: .92rem; font-weight: 500;
  border: 1px solid transparent;
  transition: all .15s ease;
}
.nav-item:hover { background: rgba(56,189,248,.06); color: var(--d-ink); }
.nav-item.active {
  background: linear-gradient(90deg, rgba(56,189,248,.14), rgba(56,189,248,.02));
  border-color: rgba(56,189,248,.25);
  color: var(--d-ink);
  box-shadow: inset 2px 0 0 var(--d-brand);
}
.nav-item .num {
  width: 22px; height: 22px; border-radius: 5px;
  background: var(--d-bg-3); border: 1px solid var(--d-line-2);
  display: grid; place-items: center;
  font-family: 'JetBrains Mono', monospace; font-size: .7rem; color: var(--d-ink-soft);
}
.nav-item.active .num { background: var(--d-brand); color: #050912; border-color: var(--d-brand); }

.sidebar-footer {
  margin-top: auto; padding: 16px 24px;
  font-size: .72rem; color: var(--d-ink-mute); border-top: 1px solid var(--d-line);
}
.sidebar-footer .status { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--d-good); box-shadow: 0 0 8px var(--d-good); }
.sidebar-footer code { color: var(--d-brand); font-family: 'JetBrains Mono', monospace; font-size: .7rem; }

/* === Main workspace === */
.workspace { display: flex; flex-direction: column; min-width: 0; }
.workspace-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 32px;
  position: relative;
  background:
    linear-gradient(180deg, rgba(56,189,248,.04), rgba(11,17,32,.4));
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}
.workspace-header::after {
  content: ''; position: absolute; left: 32px; right: 32px; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56,189,248,.4), transparent);
}
.workspace-title { display: flex; flex-direction: column; }
.workspace-title small {
  color: var(--d-brand); font-size: .68rem;
  letter-spacing: .25em; text-transform: uppercase;
  font-family: 'JetBrains Mono', monospace; font-weight: 600;
}
.workspace-title h1 { margin: 4px 0 0; font-size: 1.5rem; font-weight: 700; letter-spacing: -0.015em; }
.workspace-meta { display: flex; gap: 10px; align-items: center; }
.workspace-meta span {
  font-family: 'JetBrains Mono', monospace; font-size: .72rem;
  color: var(--d-ink-soft); letter-spacing: .04em;
  padding: 6px 12px; border-radius: 999px;
  background: rgba(15,23,42,.6); border: 1px solid rgba(56,189,248,.12);
}
.workspace-meta span b { color: var(--d-brand); font-weight: 600; }

.panel-host { flex: 1; overflow: auto; padding: 28px; }
.panel { display: none; max-width: 1500px; margin: 0 auto; }
.panel.active { display: grid; gap: 20px; grid-template-columns: minmax(380px, 460px) 1fr; }

@media (max-width: 1100px) { .panel.active { grid-template-columns: 1fr; } }
@media (max-width: 820px) { .console { grid-template-columns: 1fr; } .sidebar { display: none; } }

/* === Cards (CAD viewport frame) === */
.card {
  position: relative;
  background:
    linear-gradient(180deg, rgba(56,189,248,.04) 0%, rgba(15,23,42,0) 30%),
    linear-gradient(180deg, rgba(15,23,42,.78) 0%, rgba(11,17,32,.78) 100%);
  border-radius: 14px;
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  overflow: hidden;
  display: flex; flex-direction: column;
  box-shadow:
    0 1px 0 rgba(255,255,255,.04) inset,
    0 0 0 1px rgba(56,189,248,.06) inset,
    0 24px 48px -24px rgba(0,0,0,.7),
    0 1px 0 rgba(0,0,0,.6);
  isolation: isolate;
  transition: transform .25s ease, box-shadow .25s ease;
}
/* hairline gradient border */
.card::before {
  content: ''; position: absolute; inset: 0; border-radius: inherit;
  padding: 1px;
  background: linear-gradient(180deg, rgba(56,189,248,.55) 0%, rgba(56,189,248,.12) 30%, rgba(255,255,255,.03) 60%, rgba(56,189,248,.18) 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none; z-index: 0;
}
/* CAD-style corner brackets */
.card::after {
  content: ''; position: absolute; inset: 10px; border-radius: 8px;
  background:
    linear-gradient(var(--d-brand), var(--d-brand)) top left/14px 1px no-repeat,
    linear-gradient(var(--d-brand), var(--d-brand)) top left/1px 14px no-repeat,
    linear-gradient(var(--d-brand), var(--d-brand)) top right/14px 1px no-repeat,
    linear-gradient(var(--d-brand), var(--d-brand)) top right/1px 14px no-repeat,
    linear-gradient(var(--d-brand), var(--d-brand)) bottom left/14px 1px no-repeat,
    linear-gradient(var(--d-brand), var(--d-brand)) bottom left/1px 14px no-repeat,
    linear-gradient(var(--d-brand), var(--d-brand)) bottom right/14px 1px no-repeat,
    linear-gradient(var(--d-brand), var(--d-brand)) bottom right/1px 14px no-repeat;
  opacity: .35;
  pointer-events: none; z-index: 0;
}
.card:hover {
  transform: translateY(-1px);
  box-shadow:
    0 1px 0 rgba(255,255,255,.06) inset,
    0 0 0 1px rgba(56,189,248,.12) inset,
    0 32px 60px -24px rgba(0,0,0,.8),
    0 0 60px -20px rgba(56,189,248,.25);
}
.card > * { position: relative; z-index: 1; }

.card-head {
  padding: 14px 22px;
  display: flex; justify-content: space-between; align-items: center;
  background:
    linear-gradient(180deg, rgba(56,189,248,.08), rgba(56,189,248,0));
  border-bottom: 1px solid rgba(56,189,248,.12);
  position: relative;
}
.card-head::before {
  content: ''; position: absolute; left: 22px; top: 50%; transform: translateY(-50%);
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--d-brand); box-shadow: 0 0 10px var(--d-brand);
}
.card-head h3 {
  margin: 0; padding-left: 16px;
  font-size: .76rem; letter-spacing: .18em; text-transform: uppercase;
  color: var(--d-ink); font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
}
.card-head .badge {
  font-family: 'JetBrains Mono', monospace; font-size: .68rem;
  color: var(--d-brand);
  padding: 4px 10px; border-radius: 999px;
  background: rgba(56,189,248,.08);
  border: 1px solid rgba(56,189,248,.25);
  letter-spacing: .04em;
}
.card-body { padding: 22px; flex: 1; }
.card-foot {
  padding: 14px 22px;
  border-top: 1px solid rgba(56,189,248,.1);
  display: flex; gap: 10px; justify-content: flex-end;
  background: linear-gradient(180deg, rgba(5,9,18,0), rgba(5,9,18,.5));
}

/* === Drop zone === */
.dropzone {
  position: relative;
  border-radius: 12px;
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  transition: all .25s ease;
  background:
    radial-gradient(circle at 50% 0%, rgba(56,189,248,.06), transparent 70%),
    repeating-linear-gradient(45deg, rgba(56,189,248,.025) 0 12px, transparent 12px 24px),
    rgba(5,9,18,.4);
  overflow: hidden;
}
.dropzone::before {
  content: ''; position: absolute; inset: 0; border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(56,189,248,.4), rgba(56,189,248,.05) 50%, rgba(251,191,36,.25));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none;
  opacity: .6;
}
.dropzone:hover, .dropzone.drag {
  background:
    radial-gradient(circle at 50% 50%, rgba(56,189,248,.18), rgba(56,189,248,.04) 60%, transparent),
    repeating-linear-gradient(45deg, rgba(56,189,248,.04) 0 12px, transparent 12px 24px),
    rgba(5,9,18,.5);
  transform: translateY(-1px);
  box-shadow: 0 12px 30px -10px rgba(56,189,248,.4);
}
.dropzone:hover::before, .dropzone.drag::before { opacity: 1; }
.dropzone svg {
  margin: 0 auto 14px; color: var(--d-brand);
  width: 42px; height: 42px;
  filter: drop-shadow(0 0 12px rgba(56,189,248,.5));
}
.dropzone strong { display: block; color: var(--d-ink); margin-bottom: 6px; font-size: .98rem; }
.dropzone span { color: var(--d-ink-mute); font-size: .82rem; }
/* Visible content must NOT eat the click — let it pass through to the input below. */
.dropzone svg, .dropzone strong, .dropzone span { pointer-events: none; }
/* Transparent file input covers the whole dropzone — clicks natively trigger the OS file picker.
   Works in Safari/iOS/iframe contexts that block programmatic .click() on hidden inputs. */
.dropzone input[type=file] {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  opacity: 0; cursor: pointer;
  z-index: 3;
}

.preview-img {
  max-height: 280px; max-width: 100%; margin: 0 auto;
  border-radius: 10px;
  box-shadow: 0 0 0 1px rgba(56,189,248,.2), 0 12px 30px -8px rgba(0,0,0,.6);
}

/* === Inputs === */
label.field { display: block; margin-bottom: 14px; }
label.field span { display: block; color: var(--d-ink-soft); font-size: .78rem; margin-bottom: 6px; letter-spacing: .04em; }
input[type=text], textarea, select {
  width: 100%;
  background: rgba(5,9,18,.6);
  border: 1px solid var(--d-line-2);
  color: var(--d-ink);
  padding: 11px 14px;
  border-radius: 8px;
  font-family: inherit;
  font-size: .92rem;
  transition: border-color .15s, box-shadow .15s;
}
textarea { min-height: 120px; resize: vertical; line-height: 1.5; }
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--d-brand);
  box-shadow: 0 0 0 3px rgba(56,189,248,.15);
}
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 8px;
  font-weight: 600; font-size: .88rem; font-family: inherit;
  cursor: pointer; border: 1px solid transparent;
  transition: all .15s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--d-brand) 0%, var(--d-brand-2) 100%);
  color: #050912;
  box-shadow: 0 4px 16px -4px rgba(56,189,248,.5);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 24px -4px rgba(56,189,248,.6); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.btn-ghost {
  background: transparent; color: var(--d-ink-soft);
  border-color: var(--d-line-2);
}
.btn-ghost:hover { color: var(--d-ink); border-color: var(--d-line-2); background: rgba(56,189,248,.05); }

/* === Output (CAD viewport) === */
.output {
  min-height: 380px; display: grid; place-items: center; padding: 22px;
  position: relative;
  background:
    linear-gradient(rgba(56,189,248,.04) 1px, transparent 1px) 0 0/24px 24px,
    linear-gradient(90deg, rgba(56,189,248,.04) 1px, transparent 1px) 0 0/24px 24px,
    radial-gradient(ellipse at 50% 0%, rgba(56,189,248,.08), transparent 60%),
    rgba(5,9,18,.45);
  border-top: 1px solid rgba(56,189,248,.06);
}
.output svg { max-width: 100%; max-height: 60vh; height: auto; border-radius: 10px; box-shadow: 0 0 0 1px rgba(56,189,248,.2), 0 16px 40px -10px rgba(0,0,0,.7); }
.output-empty { text-align: center; color: var(--d-ink-mute); padding: 30px 20px; }
.output-empty svg {
  margin: 0 auto 16px; width: 56px; height: 56px;
  color: rgba(56,189,248,.35);
  filter: drop-shadow(0 0 12px rgba(56,189,248,.2));
  animation: pulse-glow 2.4s ease-in-out infinite;
}
@keyframes pulse-glow {
  0%, 100% { opacity: .7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.04); }
}
.output-empty strong { display: block; color: var(--d-ink-soft); margin-bottom: 6px; font-weight: 600; letter-spacing: .04em; }
.output-loading {
  display: flex; flex-direction: column; align-items: center; gap: 16px;
  color: var(--d-ink-soft);
}
.spinner {
  width: 38px; height: 38px;
  border: 3px solid var(--d-line);
  border-top-color: var(--d-brand);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.output-loading .step { font-family: 'JetBrains Mono', monospace; font-size: .8rem; color: var(--d-brand); }

.markdown {
  text-align: left; width: 100%; padding: 8px 4px;
  font-size: .92rem; line-height: 1.65; color: var(--d-ink);
}
.markdown h1, .markdown h2, .markdown h3 { color: var(--d-ink); margin: 1.2em 0 .5em; }
.markdown h1 { font-size: 1.3rem; } .markdown h2 { font-size: 1.1rem; } .markdown h3 { font-size: .98rem; }
.markdown p { color: var(--d-ink-soft); margin: 0 0 .8em; }
.markdown ul, .markdown ol { padding-left: 1.4em; color: var(--d-ink-soft); }
.markdown li { margin: .25em 0; }
.markdown code { background: rgba(5,9,18,.6); padding: 2px 6px; border-radius: 4px; color: var(--d-brand); font-family: 'JetBrains Mono', monospace; font-size: .85em; }
.markdown table { border-collapse: collapse; width: 100%; margin: .8em 0; font-size: .9rem; }
.markdown th, .markdown td { border: 1px solid var(--d-line-2); padding: 8px 12px; text-align: left; }
.markdown th { background: rgba(56,189,248,.06); color: var(--d-ink); font-weight: 600; }
.markdown strong { color: var(--d-ink); }

.error {
  padding: 14px 18px;
  background: rgba(248,113,113,.08);
  border: 1px solid rgba(248,113,113,.3);
  color: var(--d-bad);
  border-radius: 8px;
  font-size: .9rem;
  font-family: 'JetBrains Mono', monospace;
}

.notice {
  margin-bottom: 16px;
  padding: 10px 14px;
  background: rgba(251,191,36,.08);
  border: 1px solid rgba(251,191,36,.25);
  color: var(--d-accent);
  border-radius: 8px;
  font-size: .82rem;
  display: flex; gap: 10px; align-items: flex-start;
}

.kbd {
  font-family: 'JetBrains Mono', monospace; font-size: .72rem;
  padding: 2px 6px; background: var(--d-bg-3); border: 1px solid var(--d-line-2);
  border-radius: 4px; color: var(--d-ink-soft);
}

.feature-desc { color: var(--d-ink-soft); font-size: .9rem; line-height: 1.55; margin: 0 0 18px; }

/* annotate overlay */
.annot-stage { position: relative; max-width: 100%; }
.annot-stage img { display: block; width: 100%; border-radius: 8px; }
.annot-stage svg { position: absolute; inset: 0; width: 100%; height: 100%; }

.annot-list { margin-top: 16px; display: flex; flex-direction: column; gap: 8px; }
.annot-list li {
  list-style: none;
  padding: 10px 14px; border-radius: 8px;
  background: rgba(5,9,18,.4); border: 1px solid var(--d-line);
  font-size: .85rem;
  display: flex; gap: 12px; align-items: flex-start;
}
.annot-list .tag {
  font-family: 'JetBrains Mono', monospace; font-size: .68rem;
  padding: 2px 8px; border-radius: 4px;
  background: var(--d-brand); color: #050912; font-weight: 700;
  flex-shrink: 0;
}

.tabs-pill { display: inline-flex; padding: 4px; background: var(--d-bg-3); border-radius: 8px; border: 1px solid var(--d-line-2); }
.tabs-pill button {
  background: transparent; border: 0; color: var(--d-ink-soft);
  padding: 6px 12px; border-radius: 6px; cursor: pointer;
  font-size: .82rem; font-weight: 500; font-family: inherit;
}
.tabs-pill button.active { background: var(--d-bg-1); color: var(--d-ink); }