/* ============================================================
   Cabaña Alpina · Digital Twin — Arcan Glass aesthetic
   Tokens: dark-first + AI Blue + warm Orange + glass surfaces
   ============================================================ */

:root {
  /* Background gradient base */
  --bg-base:        #07090f;
  --bg-mid:         #0c0f17;
  --bg-elevated:    #11151f;

  /* Glass surfaces */
  --glass-soft:     rgba(255, 255, 255, 0.025);
  --glass-mid:      rgba(255, 255, 255, 0.04);
  --glass-strong:   rgba(255, 255, 255, 0.06);
  --glass-border:   rgba(255, 255, 255, 0.08);
  --glass-border-strong: rgba(255, 255, 255, 0.14);
  --glass-blur:     20px;

  /* Brand accents */
  --ai-blue:        #5b8def;
  --ai-blue-bright: #88aaff;
  --ai-blue-dim:    rgba(91, 141, 239, 0.18);
  --warm-orange:    #d18948;
  --warm-orange-bright: #f0a55f;
  --good:           #6fbf73;
  --warn:           #d4a649;
  --danger:         #e07474;

  /* Text */
  --text:           #ecedf2;
  --text-mid:       #b8bdca;
  --text-dim:       #7d8493;
  --text-faint:     #4d5260;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;

  /* Spacing scale */
  --radius:         10px;
  --radius-sm:      6px;
  --radius-lg:      14px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background:
    radial-gradient(ellipse 1200px 800px at 80% -10%, rgba(91, 141, 239, 0.10) 0%, transparent 60%),
    radial-gradient(ellipse 900px 700px at 10% 110%, rgba(209, 137, 72, 0.06) 0%, transparent 60%),
    linear-gradient(180deg, var(--bg-base) 0%, var(--bg-mid) 50%, var(--bg-base) 100%);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15.5px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--ai-blue);
  text-decoration: none;
  transition: color 120ms;
}
a:hover { color: var(--ai-blue-bright); }

h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-top: 0;
}

code, pre, .mono {
  font-family: var(--font-mono);
  font-size: 0.85em;
}

button {
  cursor: pointer;
  background: var(--glass-mid);
  color: var(--text);
  border: 1px solid var(--glass-border);
  padding: 0.55rem 1rem;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  transition: background 150ms, border-color 150ms, color 150ms;
}
button:hover {
  background: var(--glass-strong);
  border-color: var(--glass-border-strong);
  color: var(--ai-blue-bright);
}
button.primary {
  background: linear-gradient(180deg, var(--ai-blue) 0%, #3a6bd8 100%);
  color: #fff;
  border-color: var(--ai-blue);
  box-shadow: 0 4px 16px rgba(91, 141, 239, 0.25);
}
button.primary:hover {
  background: linear-gradient(180deg, var(--ai-blue-bright) 0%, var(--ai-blue) 100%);
  box-shadow: 0 6px 22px rgba(91, 141, 239, 0.35);
  color: #fff;
}
button.warm {
  background: linear-gradient(180deg, var(--warm-orange) 0%, #b06f30 100%);
  color: #fff;
  border-color: var(--warm-orange);
  box-shadow: 0 4px 16px rgba(209, 137, 72, 0.2);
}

input[type=range] {
  accent-color: var(--ai-blue);
}

input[type=text], input[type=number], textarea, select {
  background: var(--glass-soft);
  color: var(--text);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  font-family: inherit;
  font-size: 0.9rem;
  width: 100%;
}
input[type=text]:focus, textarea:focus {
  outline: none;
  border-color: var(--ai-blue);
  background: var(--glass-mid);
}

/* ============================================================
   HEADER (sticky)
   ============================================================ */

.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 9, 15, 0.78);
  backdrop-filter: blur(24px) saturate(140%);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
  border-bottom: 1px solid var(--glass-border);
  padding: 0.85rem 2rem;
}

.app-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1700px;
  margin: 0 auto;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.brand h1 {
  margin: 0;
  font-size: 1.15rem;
  letter-spacing: -0.025em;
  background: linear-gradient(90deg, var(--text) 0%, var(--ai-blue-bright) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand .tagline {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.header-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.85rem;
}

.header-actions a {
  color: var(--text-mid);
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-sm);
  transition: background 120ms;
}
.header-actions a:hover {
  background: var(--glass-mid);
  color: var(--ai-blue-bright);
}

/* ============================================================
   TABS
   ============================================================ */

.tab-nav {
  display: flex;
  gap: 0.25rem;
  padding: 0.75rem 2rem;
  max-width: 1700px;
  margin: 0 auto;
  overflow-x: auto;
  scrollbar-width: none;
}
.tab-nav::-webkit-scrollbar { display: none; }

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1rem;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-mid);
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 500;
  white-space: nowrap;
  transition: all 150ms;
}
.tab-btn:hover {
  background: var(--glass-soft);
  color: var(--text);
}
.tab-btn.active {
  background: var(--glass-mid);
  border-color: var(--ai-blue-dim);
  color: var(--ai-blue-bright);
  box-shadow: 0 2px 14px rgba(91, 141, 239, 0.12);
}
.tab-btn .badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.1rem 0.4rem;
  background: var(--glass-strong);
  border-radius: 999px;
  color: var(--text-dim);
}
.tab-btn.active .badge {
  background: var(--ai-blue-dim);
  color: var(--ai-blue-bright);
}

main {
  max-width: 1700px;
  margin: 0 auto;
  padding: 1rem 2rem 4rem;
}

.tab-panel {
  display: none;
}
.tab-panel.active {
  display: block;
  animation: tab-in 220ms ease-out;
}
@keyframes tab-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.tab-panel > h2 {
  font-size: 1.55rem;
  margin: 0 0 0.4rem;
  letter-spacing: -0.02em;
}
.tab-panel > .lede {
  color: var(--text-mid);
  max-width: 72ch;
  margin: 0 0 2rem;
  font-size: 1rem;
}

/* ============================================================
   GLASS CARDS
   ============================================================ */

.card {
  background: var(--glass-mid);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  padding: 1.25rem 1.5rem;
}
.card.elev {
  background: var(--glass-strong);
  border-color: var(--glass-border-strong);
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--glass-border);
}
.card-title {
  font-size: 0.9rem;
  color: var(--text);
  font-weight: 600;
  margin: 0;
  letter-spacing: 0.01em;
}
.card-eyebrow {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--ai-blue);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.25rem;
}

/* ============================================================
   OVERVIEW LAYOUT
   ============================================================ */

.overview-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1.5rem;
}

.hero-viewer {
  height: 540px;
  position: relative;
  overflow: hidden;
  padding: 0;
}
.hero-viewer #viewer {
  position: absolute;
  inset: 0;
}
.hero-viewer .viewer-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.6rem 1rem;
  background: linear-gradient(180deg, transparent 0%, rgba(7, 9, 15, 0.75) 100%);
  font-size: 0.78rem;
  color: var(--text-dim);
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
}
.hero-viewer .viewer-buttons {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  display: flex;
  gap: 0.4rem;
  pointer-events: auto;
}
.hero-viewer .viewer-buttons button {
  padding: 0.35rem 0.7rem;
  font-size: 0.78rem;
  background: rgba(7, 9, 15, 0.65);
}

/* ============================================================
   KPI PANEL
   ============================================================ */

.kpi-panel {
  height: 540px;
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.kpi-panel h3 {
  margin: 0 0 0.5rem;
  font-size: 0.78rem;
  color: var(--ai-blue);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.kpi-group {
  margin: 0.6rem 0 0.25rem;
  padding-bottom: 0.2rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  border-bottom: 1px dashed var(--glass-border);
}

.kpi-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.28rem 0;
  font-size: 0.88rem;
}
.kpi-label { color: var(--text-mid); }
.kpi-value {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--text);
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.kpi-value.dirty {
  color: var(--warm-orange-bright);
  font-weight: 600;
}

.kpi-note {
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--glass-border);
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* ============================================================
   SUMMARY CARDS (3-column row)
   ============================================================ */

.summary-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}
.summary-card {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.summary-card .big {
  font-size: 1.75rem;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
}
.summary-card .big.blue { color: var(--ai-blue-bright); }
.summary-card .big.orange { color: var(--warm-orange-bright); }
.summary-card .label {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.summary-card .sub {
  font-size: 0.82rem;
  color: var(--text-mid);
  margin-top: auto;
}

/* ============================================================
   PHASES (sub-tabs vertical)
   ============================================================ */

.phases-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1.5rem;
  margin-top: 1rem;
}

.phases-sidebar {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.5rem;
  position: sticky;
  top: 90px;
  align-self: start;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
}
.phase-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.85rem;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-mid);
  text-align: left;
  font-size: 0.86rem;
  cursor: pointer;
  transition: all 140ms;
}
.phase-btn:hover {
  background: var(--glass-soft);
  color: var(--text);
}
.phase-btn.active {
  background: var(--glass-mid);
  border-color: var(--ai-blue-dim);
  color: var(--ai-blue-bright);
}
.phase-btn .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--glass-mid);
  color: var(--text-dim);
  flex-shrink: 0;
}
.phase-btn.active .num {
  background: var(--ai-blue);
  color: #fff;
}
.phase-btn.done .num {
  background: var(--good);
  color: #fff;
}
.phase-btn.done .num::before {
  content: "✓";
}
.phase-btn.done .num span { display: none; }

.phase-content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.phase-content h3 {
  font-size: 1.3rem;
  margin: 0 0 0.25rem;
}
.phase-content .phase-intro {
  font-size: 1.02rem;
  color: var(--text-mid);
  line-height: 1.65;
  max-width: 70ch;
}
.phase-content .phase-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.6rem;
}
.phase-meta-item {
  background: var(--glass-soft);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.85rem;
}
.phase-meta-item .label {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.phase-meta-item .value {
  font-size: 0.92rem;
  font-weight: 500;
  margin-top: 0.15rem;
}

.checklist {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.55rem 0.75rem;
  background: var(--glass-soft);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  transition: background 150ms;
  cursor: pointer;
}
.checklist-item:hover {
  background: var(--glass-mid);
}
.checklist-item.done {
  background: rgba(111, 191, 115, 0.06);
  border-color: rgba(111, 191, 115, 0.2);
}
.checklist-item.done .checklist-text {
  color: var(--text-dim);
  text-decoration: line-through;
  text-decoration-color: rgba(255,255,255,0.2);
}
.checklist-checkbox {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--glass-border-strong);
  border-radius: 4px;
  margin-top: 1px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: transparent;
  transition: all 150ms;
}
.checklist-item.done .checklist-checkbox {
  background: var(--good);
  border-color: var(--good);
  color: #fff;
}
.checklist-text {
  flex: 1;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--text);
}
.checklist-num {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
  width: 28px;
}

.dod-block {
  padding: 1rem 1.25rem;
  background: rgba(91, 141, 239, 0.06);
  border-left: 3px solid var(--ai-blue);
  border-radius: var(--radius-sm);
}
.dod-block strong {
  color: var(--ai-blue-bright);
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.4rem;
}

.risk-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.risk-item {
  padding: 0.6rem 0.9rem;
  background: rgba(224, 116, 116, 0.05);
  border-left: 3px solid var(--danger);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.tag {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  padding: 0.2rem 0.6rem;
  background: var(--glass-mid);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  color: var(--text-mid);
}

.phase-actions {
  display: flex;
  gap: 0.6rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--glass-border);
}

/* ============================================================
   PARÁMETROS — sliders
   ============================================================ */

.params-layout {
  display: grid;
  grid-template-columns: 1.2fr 320px;
  gap: 1.5rem;
}

.slider-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.85rem;
}
.slider-item {
  background: var(--glass-soft);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
}
.slider-item label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.slider-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.slider-item input[type=range] {
  flex: 1;
}
.slider-value {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  min-width: 64px;
  text-align: right;
  color: var(--ai-blue-bright);
  font-variant-numeric: tabular-nums;
}
.slider-meta {
  font-size: 0.72rem;
  color: var(--text-dim);
  margin-top: 0.3rem;
}

.experiment-actions {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

/* ============================================================
   TABLES (BOM / Presupuesto)
   ============================================================ */

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}
.data-table th, .data-table td {
  padding: 0.6rem 0.8rem;
  text-align: left;
  border-bottom: 1px solid var(--glass-border);
}
.data-table th {
  font-weight: 500;
  color: var(--text-dim);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--glass-soft);
}
.data-table td.num, .data-table th.num {
  text-align: right;
  font-family: var(--font-mono);
}
.data-table tr:hover td {
  background: var(--glass-soft);
}

/* ============================================================
   PARÁMETROS INLINE (debajo del render en Overview)
   ============================================================ */

.params-inline-help {
  color: var(--text-mid);
  font-size: 0.9rem;
  margin: 0 0 1rem;
  max-width: 78ch;
}
.params-inline .slider-grid {
  margin-bottom: 0.25rem;
}

/* ============================================================
   FULL-SCREEN 3D — viewport completo + dock de parámetros
   ============================================================ */

/* La altura del header sticky (h1 + tabs) ~ 116px. Le damos 124px para holgura. */
:root {
  --app-header-h: 124px;
  --params-dock-w: 340px;
}

/* Cuando el 3D está activo, el panel rompe el padding de <main> para llegar a borde-a-borde. */
.tab-panel.cad3d-panel.active {
  margin: -1rem -2rem -4rem;   /* compensa main padding 1rem 2rem 4rem */
  padding: 0;
}

.cad3d-panel .full-viewer-wrap {
  position: relative;
  width: 100%;
  height: calc(100vh - var(--app-header-h));
  min-height: 480px;
  padding: 0;
  border: none;
  border-radius: 0;
  background: transparent;
  overflow: hidden;
}

.cad3d-panel #viewer-full {
  position: absolute;
  inset: 0;
}

/* Botones flotantes para reset/grid en 3D — esquina superior izquierda */
.cad3d-viewer-buttons {
  position: absolute;
  top: 1rem;
  left: 1rem;
  display: flex;
  gap: 0.4rem;
  z-index: 5;
}
.cad3d-viewer-buttons button {
  padding: 0.35rem 0.7rem;
  font-size: 0.78rem;
  background: rgba(7, 9, 15, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Meta footer: enlaces step/build123d en esquina inferior izquierda */
.cad3d-meta {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.76rem;
  color: var(--text-dim);
  background: rgba(7, 9, 15, 0.65);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--glass-border);
  pointer-events: auto;
  z-index: 4;
}
.cad3d-meta a {
  color: var(--ai-blue);
  font-family: var(--font-mono);
}
.cad3d-meta .dot { color: var(--text-faint); }

/* ============================================================
   PARAMS DOCK (flota dentro del tab 3D)
   ============================================================ */

.params-dock {
  position: absolute;
  top: 1rem;
  right: 1rem;
  bottom: 1rem;
  width: var(--params-dock-w);
  max-width: calc(100vw - 2rem);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem 1.1rem;
  background: rgba(15, 18, 26, 0.78);
  backdrop-filter: blur(22px) saturate(140%);
  -webkit-backdrop-filter: blur(22px) saturate(140%);
  border: 1px solid var(--glass-border-strong);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 40px rgba(0,0,0,0.45);
  z-index: 10;
  transition: transform 250ms ease, opacity 200ms ease;
}

.params-dock[data-state="closed"] {
  transform: translateX(calc(100% + 1.5rem));
  opacity: 0;
  pointer-events: none;
}

.params-dock-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.6rem;
}
.params-dock-header h3 {
  margin: 0.1rem 0 0;
}

.dock-toggle {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 28px;
  height: 28px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  border-radius: 50%;
  background: var(--glass-mid);
}

/* Si el dock está colapsado, mostramos un mini-handle anclado al borde derecho */
.params-dock[data-state="closed"] + /* no hermano viable; usamos un pseudo via JS si lo necesitamos */ * {}

.params-dock-body {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  min-height: 0;
  margin-right: -0.4rem;  /* permite que el scrollbar caiga sobre el padding */
  padding-right: 0.4rem;
}

.slider-grid-dock {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.slider-grid-dock .slider-item {
  padding: 0.6rem 0.75rem;
}

.dock-actions {
  margin-top: 0.5rem;
  flex-wrap: wrap;
}
.dock-actions button {
  flex: 1;
  min-width: 90px;
}

.dock-hint {
  margin: 0;
  font-size: 0.72rem;
  color: var(--text-dim);
  line-height: 1.45;
}
.dock-hint code {
  background: var(--glass-soft);
  padding: 0.05rem 0.35rem;
  border-radius: 4px;
}

/* "Mostrar dock": pill flotante en el borde derecho, sólo visible cuando el dock está cerrado */
.dock-show-handle {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 11;
  padding: 0.5rem 0.95rem;
  font-size: 0.82rem;
  background: rgba(15, 18, 26, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--ai-blue-dim);
  border-radius: 999px;
  display: none;
  align-items: center;
  gap: 0.4rem;
}
.dock-show-handle.visible {
  display: inline-flex;
}

/* ============================================================
   PROGRESS TRACKER (Progreso tab)
   ============================================================ */

.progress-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 1.5rem;
}

.progress-bar {
  height: 6px;
  background: var(--glass-mid);
  border-radius: 3px;
  overflow: hidden;
  margin: 0.5rem 0;
}
.progress-bar .fill {
  height: 100%;
  background: linear-gradient(90deg, var(--ai-blue) 0%, var(--good) 100%);
  transition: width 250ms;
}

.phase-progress-card {
  padding: 0.9rem 1.1rem;
  background: var(--glass-soft);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
}
.phase-progress-card.done {
  background: rgba(111, 191, 115, 0.05);
  border-color: rgba(111, 191, 115, 0.2);
}
.phase-progress-card .num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--glass-mid);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  flex-shrink: 0;
}
.phase-progress-card.done .num {
  background: var(--good);
  color: #fff;
}
.phase-progress-card .info { flex: 1; min-width: 0; }
.phase-progress-card .info h4 {
  margin: 0;
  font-size: 0.95rem;
}
.phase-progress-card .info .meta {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 0.15rem;
}
.phase-progress-card .info .progress-bar { margin: 0.4rem 0 0; }

.log-entry {
  display: flex;
  gap: 0.6rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.82rem;
  border-left: 2px solid var(--glass-border);
}
.log-entry .ts {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-dim);
  flex-shrink: 0;
  width: 80px;
}
.log-entry.complete { border-color: var(--good); }
.log-entry.start    { border-color: var(--ai-blue); }
.log-entry.note     { border-color: var(--warm-orange); }

/* ============================================================
   ASSISTANT — sidebar (visible on Progreso tab)
   ============================================================ */

.assistant-card {
  position: sticky;
  top: 90px;
  align-self: start;
  padding: 1.25rem;
  background: linear-gradient(180deg, var(--glass-mid) 0%, var(--glass-strong) 100%);
  border: 1px solid var(--ai-blue-dim);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.assistant-card h3 {
  margin: 0;
  font-size: 0.78rem;
  color: var(--ai-blue-bright);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.assistant-card .suggestion {
  padding: 0.6rem 0.85rem;
  background: var(--glass-mid);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  line-height: 1.45;
}
.assistant-card .next-phase {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--warm-orange-bright);
}

/* ============================================================
   FOOTER
   ============================================================ */

footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--glass-border);
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 4rem;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1080px) {
  .overview-grid { grid-template-columns: 1fr; }
  .hero-viewer, .kpi-panel { height: auto; }
  .hero-viewer { height: 420px; }
  .kpi-panel { height: auto; max-height: 600px; }
  .phases-layout { grid-template-columns: 1fr; }
  .phases-sidebar { position: static; flex-direction: row; flex-wrap: wrap; max-height: none; }
  .params-layout, .progress-grid { grid-template-columns: 1fr; }
  .assistant-card { position: static; }
  /* Dock más estrecho en tablet */
  :root { --params-dock-w: 300px; }
}

@media (max-width: 720px) {
  /* En móvil el dock ocupa casi todo el ancho — útil para tocar sliders */
  :root { --params-dock-w: calc(100vw - 2rem); }
  .params-dock { bottom: auto; max-height: 60vh; }
  .cad3d-panel .full-viewer-wrap { height: calc(100vh - var(--app-header-h) - 40px); }
}

@media (max-width: 640px) {
  main, .tab-nav, .app-header-inner { padding-left: 1rem; padding-right: 1rem; }
  .app-header-inner { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .summary-card .big { font-size: 1.4rem; }
}

/* ============================================================
   THEME TOGGLE BUTTON (header)
   ============================================================ */

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  font-size: 0.95rem;
  line-height: 1;
  border-radius: 999px;
  background: var(--glass-mid);
  border: 1px solid var(--glass-border);
  color: var(--text-mid);
  transition: background 150ms, border-color 150ms, color 150ms, transform 200ms;
}
.theme-toggle:hover {
  background: var(--glass-strong);
  border-color: var(--ai-blue-dim);
  color: var(--ai-blue-bright);
  transform: rotate(15deg);
}
.theme-toggle .theme-icon-light,
.theme-toggle .theme-icon-dark {
  display: none;
  line-height: 1;
}
:root[data-theme="light"] .theme-toggle .theme-icon-dark { display: inline; }
:root:not([data-theme="light"]) .theme-toggle .theme-icon-light { display: inline; }

/* ============================================================
   LIGHT THEME — token overrides
   Activated by data-theme="light" on <html>. Dark stays default.
   Most surfaces inherit via CSS variables; only places with
   hard-coded dark rgba() need explicit light overrides below.
   ============================================================ */

:root[data-theme="light"] {
  --bg-base:        #f6f5f1;
  --bg-mid:         #ecebe4;
  --bg-elevated:    #ffffff;

  --glass-soft:     rgba(15, 23, 42, 0.03);
  --glass-mid:      rgba(255, 255, 255, 0.65);
  --glass-strong:   rgba(255, 255, 255, 0.85);
  --glass-border:   rgba(15, 23, 42, 0.10);
  --glass-border-strong: rgba(15, 23, 42, 0.18);
  --glass-blur:     18px;

  --ai-blue:        #2c5cc5;
  --ai-blue-bright: #1c47a8;
  --ai-blue-dim:    rgba(44, 92, 197, 0.18);
  --warm-orange:    #a8651f;
  --warm-orange-bright: #884f14;
  --good:           #2c7f37;
  --warn:           #a07020;
  --danger:         #b53d33;

  --text:           #14181f;
  --text-mid:       #475063;
  --text-dim:       #6b7385;
  --text-faint:     #7a8090;  /* bumped from #9aa0ad for AA contrast on white */
}

:root[data-theme="light"] body {
  background:
    radial-gradient(ellipse 1200px 800px at 80% -10%, rgba(44, 92, 197, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 900px 700px at 10% 110%, rgba(168, 101, 31, 0.06) 0%, transparent 60%),
    linear-gradient(180deg, var(--bg-base) 0%, var(--bg-mid) 50%, var(--bg-base) 100%);
}

/* Sticky header: was rgba(7,9,15,0.78). Light needs paper-tint. */
:root[data-theme="light"] .app-header {
  background: rgba(246, 245, 241, 0.82);
  border-bottom-color: var(--glass-border);
}

/* Hero viewer overlay (hardcoded dark gradient) */
:root[data-theme="light"] .hero-viewer .viewer-overlay {
  background: linear-gradient(180deg, transparent 0%, rgba(246, 245, 241, 0.85) 100%);
}

/* 3D viewer floating buttons (hardcoded dark rgba) */
:root[data-theme="light"] .hero-viewer .viewer-buttons button,
:root[data-theme="light"] .cad3d-viewer-buttons button {
  background: rgba(255, 255, 255, 0.78);
  color: var(--text);
}

/* 3D meta footer (hardcoded dark rgba) */
:root[data-theme="light"] .cad3d-meta {
  background: rgba(255, 255, 255, 0.78);
  border-color: var(--glass-border);
  color: var(--text-mid);
}

/* Params dock (hardcoded dark rgba) */
:root[data-theme="light"] .params-dock {
  background: rgba(255, 255, 255, 0.82);
  border-color: var(--glass-border-strong);
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.12);
}

/* Dock show-handle (hardcoded dark rgba) */
:root[data-theme="light"] .dock-show-handle {
  background: rgba(255, 255, 255, 0.88);
  color: var(--ai-blue-bright);
}

/* Primary/warm button halos: lighter shadow in light mode */
:root[data-theme="light"] button.primary {
  box-shadow: 0 4px 14px rgba(44, 92, 197, 0.20);
}
:root[data-theme="light"] button.primary:hover {
  box-shadow: 0 6px 18px rgba(44, 92, 197, 0.28);
}
:root[data-theme="light"] button.warm {
  box-shadow: 0 4px 14px rgba(168, 101, 31, 0.18);
}

/* Tab active state halo */
:root[data-theme="light"] .tab-btn.active {
  box-shadow: 0 2px 10px rgba(44, 92, 197, 0.10);
}

/* Smooth transitions when toggling */
html, body, .card, .app-header, button, .tab-btn, .data-table,
.phase-btn, .checklist-item, .summary-card, .params-dock,
.assistant-card, .slider-item, .log-entry, .progress-bar,
.cad3d-meta, .dock-show-handle {
  transition: background 250ms ease, border-color 250ms ease, color 200ms ease, box-shadow 250ms ease;
}