/*
  TOKENS DE DISEÑO — AI Landscape Designer
  -----------------------------------------
  Dirección: "estudio de arquitectura de paisaje", no "app de IA".
  Fondo grafito oscuro tipo noche de jardín + grilla sutil de "plano técnico".
  Acento musgo (vegetación) y acento arcilla (piedra/deck) — ninguno de los dos
  es el naranja-terracota estándar de interfaces de IA genéricas.
  Tipografía: Fraunces (serif de carácter, para títulos) + Inter (cuerpo) +
  IBM Plex Mono (para todo lo "técnico": tipos de espacio, status, badges).
*/

:root {
  --bg: #12140f;
  --surface: #191c15;
  --surface-raised: #20241b;
  --line: rgba(243, 241, 231, 0.1);
  --line-strong: rgba(243, 241, 231, 0.22);
  --paper: #f4f2e7;
  --ink: #eeecdf;
  --ink-dim: #a8a898;
  --moss: #93a97e;
  --moss-dim: #6c7f5b;
  --clay: #c0855a;
  --clay-dim: #8f6440;
  --danger: #d97a6a;

  --font-display: 'Fraunces', serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --radius: 3px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

body {
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 32px 32px;
  background-attachment: fixed;
}

.screen { min-height: 100vh; }

/* Cualquier elemento con display declarado en su propio CSS (flex, grid, etc.)
   le gana en la cascada a la regla nativa [hidden]{display:none} del navegador
   — el origen "author" siempre pisa al "user-agent", sin importar especificidad.
   Esta regla global asegura que hidden=true SIEMPRE oculte de verdad, sea cual
   sea el elemento (spinners, pantallas, paneles, lo que sea que se agregue después). */
[hidden] { display: none !important; }

/* ---------- AUTH ---------- */
#auth-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

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

.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }

.brand-mark {
  width: 30px; height: 30px;
  border: 1.5px solid var(--moss);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}
.brand-mark::before, .brand-mark::after {
  content: '';
  position: absolute; background: var(--moss);
}
.brand-mark::before { width: 1px; height: 30px; left: 50%; top: -1px; transform: translateX(-50%); opacity: .5;}
.brand-mark::after { height: 1px; width: 30px; top: 50%; left: -1px; transform: translateY(-50%); opacity: .5;}
.brand-mark.small { width: 20px; height: 20px; }
.brand-mark.small::before { height: 20px; }
.brand-mark.small::after { width: 20px; }

.brand-eyebrow {
  margin: 0; font-family: var(--font-mono); font-size: 11px;
  letter-spacing: .12em; text-transform: uppercase; color: var(--ink-dim);
}
.brand-title { margin: 2px 0 0; font-family: var(--font-display); font-size: 22px; font-weight: 500; }

.auth-sub { color: var(--ink-dim); font-size: 14px; line-height: 1.5; margin: 0 0 24px; }

.auth-tabs { display: flex; border-bottom: 1px solid var(--line-strong); margin-bottom: 20px; }
.auth-tab {
  flex: 1; background: none; border: none; color: var(--ink-dim);
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .05em; text-transform: uppercase;
  padding: 10px 0; cursor: pointer; border-bottom: 2px solid transparent;
}
.auth-tab.is-active { color: var(--moss); border-color: var(--moss); }

.auth-form { display: flex; flex-direction: column; gap: 14px; }

.field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; }
.field span, .field legend { color: var(--ink-dim); font-family: var(--font-mono); font-size: 11px; letter-spacing: .04em; text-transform: uppercase; padding: 0; }
.field input, .field select {
  background: var(--bg); border: 1px solid var(--line-strong); border-radius: var(--radius);
  color: var(--ink); padding: 10px 12px; font-size: 14px; font-family: var(--font-body);
}
.field input:focus, .field select:focus { outline: 2px solid var(--moss); outline-offset: 1px; }
.field-row { display: flex; gap: 12px; }
.field-row .field { flex: 1; }

.field textarea {
  background: var(--bg); border: 1px solid var(--line-strong); border-radius: var(--radius);
  color: var(--ink); padding: 10px 12px; font-size: 13px; font-family: var(--font-body); resize: vertical;
}
.field textarea:focus { outline: 2px solid var(--moss); outline-offset: 1px; }

.advanced-block {
  border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 14px; margin-bottom: 20px;
}
.advanced-block summary { cursor: pointer; margin-bottom: 12px; }
.advanced-block .field { margin-bottom: 14px; }
.advanced-block .field:last-child { margin-bottom: 0; }
.advanced-block .field-row { margin-bottom: 14px; }

.color-inputs { display: flex; flex-direction: column; gap: 8px; }
.color-input-row { display: flex; gap: 8px; align-items: center; }
.color-input-row input[type="color"] {
  width: 34px; height: 34px; padding: 0; border: 1px solid var(--line-strong); border-radius: var(--radius);
  background: none; cursor: pointer; flex-shrink: 0;
}
.color-input-row input[type="text"] {
  flex: 1; background: var(--bg); border: 1px solid var(--line-strong); border-radius: var(--radius);
  color: var(--ink); padding: 8px 10px; font-size: 12px; font-family: var(--font-body);
}

/* Brief inteligente: chips de "para qué se usa" */
.chip-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: flex; align-items: center; gap: 6px; border: 1px solid var(--line-strong); border-radius: 20px;
  padding: 9px 14px; font-size: 13px; cursor: pointer; color: var(--ink-dim);
}
.chip:has(input:checked) { border-color: var(--moss); color: var(--moss); background: var(--surface-raised); }
.chip input { accent-color: var(--moss); width: 15px; height: 15px; }

/* Nivel de mantenimiento: segmented control, táctil */
.segmented { display: flex; border: 1px solid var(--line-strong); border-radius: var(--radius); overflow: hidden; }
.segmented-btn {
  flex: 1; background: var(--bg); border: none; border-right: 1px solid var(--line-strong);
  color: var(--ink-dim); font-size: 13px; padding: 11px 8px; cursor: pointer;
}
.segmented-btn:last-child { border-right: none; }
.segmented-btn.is-active { background: var(--surface-raised); color: var(--moss); font-weight: 600; }

.brief-saved { color: var(--moss) !important; transition: opacity .3s; }

/* Toggle de profundidad de campo — reusa .mode-option pero para un solo checkbox */
.dof-toggle { margin-top: 4px; }

/* Site Analysis: badges de lo detectado, siempre marcado como estimación */
.site-analysis-badges { display: flex; flex-wrap: wrap; gap: 6px; }
.site-badge {
  font-family: var(--font-mono); font-size: 11px; padding: 5px 10px; border-radius: 20px;
  border: 1px solid var(--moss-dim); color: var(--moss); background: var(--surface-raised);
}
.site-badge.is-low-confidence { border-color: var(--clay-dim); color: var(--clay); }

.form-error { color: var(--danger); font-size: 13px; margin: 0; }
.form-warning { color: var(--clay); font-size: 13px; margin: 0; }

.btn {
  font-family: var(--font-body); font-weight: 600; font-size: 14px;
  border-radius: var(--radius); padding: 11px 18px; cursor: pointer; border: 1px solid transparent;
  transition: opacity .15s, transform .1s;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
}
.btn:active:not(:disabled) { transform: scale(.98); }
.btn:disabled { opacity: .7; cursor: not-allowed; }
.btn.is-loading::before {
  content: '';
  width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid rgba(16, 19, 12, .3); border-top-color: currentColor;
  animation: spin .7s linear infinite;
  flex-shrink: 0;
}
.btn-block { width: 100%; }
.btn-primary { background: var(--moss); color: #10130c; }
.btn-primary:hover:not(:disabled) { background: #a3b78d; }
.btn-outline { background: transparent; border-color: var(--line-strong); color: var(--ink); }
.btn-outline:hover { border-color: var(--moss); color: var(--moss); }
.btn-link { background: none; border: none; color: var(--ink-dim); font-size: 12px; cursor: pointer; text-decoration: underline; }

/* ---------- WORKSPACE (mobile-first: base = celular, min-width 900px = escritorio) ---------- */
#workspace-screen {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  animation: fade-in .35s ease-out;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.rail {
  background: var(--surface);
  border-bottom: 1px solid var(--line-strong);
  position: sticky; top: 0; z-index: 20;
}
.rail-header { display: flex; align-items: center; gap: 10px; padding: 14px 16px; }
.rail-title { font-family: var(--font-display); font-size: 15px; font-weight: 500; flex: 1; }

.rail-toggle {
  background: none; border: 1px solid var(--line-strong); border-radius: var(--radius);
  width: 36px; height: 36px; display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 4px; cursor: pointer; flex-shrink: 0;
}
.rail-toggle span { width: 16px; height: 1.5px; background: var(--ink); display: block; }

.rail-body { display: none; padding: 0 16px 16px; }
.rail-body.is-open { display: block; }

.rail-section { margin-top: 4px; }
.rail-label {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-dim); margin: 16px 0 8px;
}
.project-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.project-list li {
  padding: 11px 12px; border-radius: var(--radius); cursor: pointer; font-size: 14px;
  border: 1px solid transparent; color: var(--ink-dim);
}
.project-list li:hover { border-color: var(--line-strong); color: var(--ink); }
.project-list li.is-active { background: var(--surface-raised); border-color: var(--moss-dim); color: var(--ink); }

.rail-footer {
  border-top: 1px solid var(--line-strong); margin-top: 16px; padding-top: 14px;
  display: flex; align-items: center; justify-content: space-between;
}
.credits-badge { display: flex; flex-direction: column; }
.credits-label { font-family: var(--font-mono); font-size: 9px; text-transform: uppercase; letter-spacing: .1em; color: var(--ink-dim); }
.credits-value { font-family: var(--font-mono); font-size: 16px; color: var(--clay); }

.main { flex: 1; padding: 20px 16px 40px; overflow-y: auto; }

.empty-state { margin-top: 40px; }
.empty-eyebrow { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: .1em; color: var(--moss); margin: 0 0 8px; }
.empty-state h2 { font-family: var(--font-display); font-weight: 500; font-size: 22px; margin: 0 0 10px; }
.empty-copy { color: var(--ink-dim); line-height: 1.6; }

.panel { max-width: 1100px; }
.panel-title { font-family: var(--font-display); font-weight: 500; font-size: 21px; margin: 0; }
.panel-eyebrow { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: .1em; color: var(--moss); margin: 0 0 4px; }
.panel-header { margin-bottom: 20px; }

#project-form { display: flex; flex-direction: column; gap: 16px; }
fieldset.field { border: none; padding: 0; margin: 0; }

.input-mode-grid { display: grid; grid-template-columns: 1fr; gap: 8px; }
.mode-option {
  display: flex; align-items: center; gap: 10px; border: 1px solid var(--line-strong);
  border-radius: var(--radius); padding: 13px 14px; cursor: pointer; font-size: 14px;
}
.mode-option:has(input:checked) { border-color: var(--moss); background: var(--surface-raised); }
.mode-option input { accent-color: var(--moss); width: 18px; height: 18px; }

.workspace-grid { display: grid; grid-template-columns: 1fr; gap: 28px; }

.upload-block { margin-bottom: 20px; }
.config-divider {
  font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: .06em;
  color: var(--moss); margin: 4px 0 16px; padding-top: 16px; border-top: 1px solid var(--line-strong);
}
.block-label { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--ink); margin: 0 0 4px; }
.block-hint { font-size: 12px; color: var(--ink-dim); margin: 0 0 8px; line-height: 1.4; }

/* Dropzones grandes y táctiles — pensadas para tocar con el dedo, no clic de precisión */
.dropzone {
  border: 1px dashed var(--line-strong); border-radius: var(--radius);
  min-height: 130px; display: flex; align-items: center; justify-content: center;
  cursor: pointer; background: var(--surface); overflow: hidden;
}
.dropzone:hover, .dropzone:active { border-color: var(--moss); }
.dz-empty { font-size: 13px; color: var(--ink-dim); padding: 16px; text-align: center; }
.dz-preview { width: 100%; display: block; }

.elements-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 12px; font-size: 14px; color: var(--ink-dim); }
.elements-grid label { display: flex; align-items: center; gap: 8px; min-height: 24px; }
.elements-grid input { accent-color: var(--moss); width: 17px; height: 17px; }

.result-col { min-width: 0; }
.result-empty, .result-loading {
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  min-height: 260px; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 12px; background: var(--surface); color: var(--ink-dim); font-size: 13px; text-align: center; padding: 20px;
}
.result-empty-mark { width: 44px; height: 44px; border: 1px solid var(--line-strong); border-radius: 50%; }
.loading-mark {
  width: 30px; height: 30px; border-radius: 50%;
  border: 2px solid var(--line-strong); border-top-color: var(--moss);
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Grilla de 3 conceptos — mobile: apilados, cada uno ocupa el ancho completo
   (más fácil de tocar y ver que un carrusel angosto). Desktop: 3 columnas. */
.concepts-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
.concept-card {
  border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--surface);
  overflow: hidden; cursor: default;
}
.concept-card.is-ready { cursor: pointer; }
.concept-card.is-ready:hover { border-color: var(--moss); }
.concept-card-media {
  aspect-ratio: 4 / 3; background: var(--bg); display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.concept-card-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.concept-card-spinner {
  width: 26px; height: 26px; border-radius: 50%;
  border: 2px solid var(--line-strong); border-top-color: var(--moss);
  animation: spin 1s linear infinite;
}
.concept-card-body { padding: 12px 14px; }
.concept-card-label { font-family: var(--font-display); font-size: 15px; margin: 0 0 2px; }
.concept-card-status { font-family: var(--font-mono); font-size: 11px; color: var(--ink-dim); margin: 0; }
.concept-card-status.is-error { color: var(--danger); }
.concept-card-status.is-ready { color: var(--moss); }

.back-link { display: block; margin-bottom: 12px; font-size: 13px; }

.result-view { border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--surface); padding: 14px; }
.conceptual-badge {
  display: inline-block; font-family: var(--font-mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: .08em; color: var(--clay); border: 1px solid var(--clay-dim); border-radius: var(--radius);
  padding: 4px 8px; margin: 0 0 10px;
}

.material-strip { margin-bottom: 14px; }
.material-strip-label {
  font-family: var(--font-mono); font-size: 10px; text-transform: uppercase; letter-spacing: .08em;
  color: var(--ink-dim); margin: 0 0 6px;
}
.material-thumbs { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 2px; }
.material-thumb {
  width: 52px; height: 52px; object-fit: cover; border-radius: var(--radius);
  border: 1px solid var(--line-strong); flex-shrink: 0;
}

.compare-tabs { display: flex; gap: 6px; margin-bottom: 10px; }
.compare-tab {
  flex: 1; background: var(--bg); border: 1px solid var(--line-strong); border-radius: var(--radius);
  color: var(--ink-dim); font-family: var(--font-mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: .06em; padding: 10px; cursor: pointer;
}
.compare-tab.is-active { border-color: var(--moss); color: var(--moss); background: var(--surface-raised); }

.compare-frame { border-radius: var(--radius); overflow: hidden; background: #000; }
.compare-img { width: 100%; display: block; }

.result-actions { display: flex; gap: 10px; margin-top: 14px; }
.result-actions .btn { flex: 1; }

.history-strip { margin-top: 24px; }
.history-list { list-style: none; margin: 0; padding: 0; display: flex; gap: 8px; flex-wrap: wrap; }
.history-list li {
  font-family: var(--font-mono); font-size: 11px; padding: 7px 11px; border: 1px solid var(--line-strong);
  border-radius: var(--radius); color: var(--ink-dim); cursor: default;
}
.history-list li[data-status="succeeded"] { color: var(--moss); border-color: var(--moss-dim); cursor: pointer; }
.history-list li[data-status="failed"] { color: var(--danger); border-color: var(--danger); }

/* Generar propuesta: siempre a mano en mobile mientras se completa el formulario */
#generate-btn {
  position: sticky; bottom: 12px; z-index: 5;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .5);
}

/* ---------- Desktop (900px+) ---------- */
@media (min-width: 900px) {
  #workspace-screen { flex-direction: row; }

  .rail {
    width: 260px; flex-shrink: 0; border-bottom: none; border-right: 1px solid var(--line-strong);
    position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; padding: 20px 16px;
  }
  .rail-header { padding: 0 0 20px; margin-bottom: 0; }
  .rail-toggle { display: none; }
  .rail-body { display: flex !important; flex-direction: column; flex: 1; padding: 0; min-height: 0; }
  .rail-section { flex: 1; overflow-y: auto; }

  .main { padding: 32px 40px; }
  .empty-state { max-width: 420px; margin-top: 80px; }
  .empty-state h2 { font-size: 26px; }
  .panel-title { font-size: 24px; }

  #project-form { max-width: 560px; }
  .input-mode-grid { grid-template-columns: 1fr 1fr; }

  .workspace-grid { grid-template-columns: 340px 1fr; gap: 32px; align-items: start; }

  .dropzone { min-height: 90px; }

  .result-empty, .result-loading { min-height: 420px; }
  .concepts-grid { grid-template-columns: repeat(3, 1fr); }

  #generate-btn { position: static; box-shadow: none; }
}

@media (prefers-reduced-motion: reduce) {
  #workspace-screen { animation: none; }
  .btn.is-loading::before, .loading-mark { animation: none; }
  * { transition: none !important; }
}