@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700;900&family=JetBrains+Mono:wght@300;400;500;700&display=swap');

/* ============================================
   BUILDER OS — ESO
   Design: Carnet d'architecte / Chantier Premium
   Palette: Ardoise + Ambre + Cuivre
   ============================================ */

:root {
  --bg-primary: #0f0e0c;
  --bg-secondary: #161410;
  --bg-panel: #1c1915;
  --bg-card: #222019;
  --bg-hover: #2a271f;

  --border: #2e2a22;
  --border-bright: #3d3828;

  --text-primary: #f0e8d8;
  --text-secondary: #9e9178;
  --text-muted: #4a4436;

  --amber: #f0a030;
  --copper: #c87941;
  --gold: #d4a843;
  --green-sage: #7a9e7e;
  --red-clay: #c45c3a;
  --blue-slate: #5a7a9e;

  --font-display: 'Playfair Display', serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius: 3px;
  --radius-lg: 6px;
  --transition: 140ms ease;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  min-height: 100vh;
}

/* Texture grain subtile */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9998;
  opacity: 0.4;
}

/* ============================================
   TOP BAR — Projet selector
   ============================================ */

#top-bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  height: 52px;
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 0;
}

.app-logo {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  color: var(--amber);
  letter-spacing: 0.02em;
  margin-right: 32px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.app-logo .logo-icon {
  font-size: 20px;
}

.project-tabs {
  display: flex;
  align-items: center;
  height: 52px;
  gap: 2px;
}

.project-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 20px;
  height: 52px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  margin-bottom: -1px;
  text-transform: uppercase;
}

.project-tab:hover { color: var(--text-secondary); background: var(--bg-hover); }

.project-tab.active {
  color: var(--amber);
  border-bottom-color: var(--amber);
  background: rgba(240, 160, 48, 0.05);
}

.project-tab .tab-emoji { font-size: 15px; }

.top-bar-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 16px;
}

.budget-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 11px;
}

.budget-label { color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; }
.budget-value { color: var(--amber); font-weight: 700; }

/* ============================================
   NAVIGATION SECONDAIRE (onglets dans projet)
   ============================================ */

#sub-nav {
  position: fixed;
  top: 52px; left: 0; right: 0;
  z-index: 99;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  height: 44px;
  gap: 2px;
}

.sub-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 16px;
  height: 44px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition);
  margin-bottom: -1px;
}

.sub-tab:hover { color: var(--text-secondary); }
.sub-tab.active { color: var(--amber); border-bottom-color: var(--amber); }

/* ============================================
   MAIN LAYOUT
   ============================================ */

#app {
  margin-top: 96px;
  padding: 20px 24px;
  max-width: 1440px;
  margin-left: auto;
  margin-right: auto;
}

.tab-content { display: none; animation: fadeIn 180ms ease; }
.tab-content.active { display: block; }
.project-content { display: none; }
.project-content.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(3px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   PANELS
   ============================================ */

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.panel-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel-title::before {
  content: '';
  width: 3px;
  height: 16px;
  background: var(--amber);
  border-radius: 2px;
}

/* ============================================
   GRILLES
   ============================================ */

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.grid-sidebar { display: grid; grid-template-columns: 280px 1fr; gap: 16px; }

/* ============================================
   VUE D'ENSEMBLE — Cards de projet
   ============================================ */

.project-hero {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 16px;
  position: relative;
  overflow: hidden;
}

.project-hero::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 200px; height: 100%;
  background: linear-gradient(135deg, transparent 60%, rgba(240,160,48,0.04));
  pointer-events: none;
}

.project-phase-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(240, 160, 48, 0.1);
  border: 1px solid rgba(240, 160, 48, 0.25);
  border-radius: 20px;
  font-size: 10px;
  color: var(--amber);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}

.project-name {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 13px;
  margin-bottom: 20px;
  max-width: 600px;
}

.project-stats {
  display: flex;
  gap: 32px;
}

.stat-item { display: flex; flex-direction: column; gap: 3px; }
.stat-label { font-size: 9px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--text-muted); }
.stat-value { font-size: 18px; font-weight: 700; color: var(--text-primary); font-family: var(--font-mono); }
.stat-value.amber { color: var(--amber); }
.stat-value.green { color: var(--green-sage); }
.stat-value.red { color: var(--red-clay); }

/* Progress timeline */
.phase-timeline {
  display: flex;
  align-items: center;
  gap: 0;
  margin-top: 20px;
}

.phase-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  position: relative;
}

.phase-step::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 50%;
  right: -50%;
  height: 1px;
  background: var(--border);
  z-index: 0;
}

.phase-step:last-child::before { display: none; }

.phase-dot {
  width: 24px; height: 24px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--bg-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 10px;
  position: relative;
  z-index: 1;
  transition: all var(--transition);
}

.phase-step.done .phase-dot { border-color: var(--green-sage); background: rgba(122,158,126,0.15); color: var(--green-sage); }
.phase-step.current .phase-dot { border-color: var(--amber); background: rgba(240,160,48,0.15); color: var(--amber); box-shadow: 0 0 12px rgba(240,160,48,0.3); }
.phase-step.future .phase-dot { color: var(--text-muted); }

.phase-label { font-size: 9px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 6px; text-align: center; }
.phase-step.current .phase-label { color: var(--amber); }

/* ============================================
   MODULES DE CONSTRUCTION
   ============================================ */

.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}

.module-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.module-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--border);
  transition: background var(--transition);
}

.module-card:hover { border-color: var(--border-bright); background: var(--bg-hover); }
.module-card:hover::before { background: var(--amber); }
.module-card.status-todo::before { background: var(--text-muted); }
.module-card.status-wip::before { background: var(--amber); box-shadow: 0 0 8px rgba(240,160,48,0.4); }
.module-card.status-done::before { background: var(--green-sage); }

.module-icon { font-size: 24px; margin-bottom: 10px; }
.module-name { font-family: var(--font-display); font-weight: 700; font-size: 15px; color: var(--text-primary); margin-bottom: 4px; }
.module-desc { font-size: 11px; color: var(--text-muted); margin-bottom: 12px; line-height: 1.5; }

.module-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.module-status-badge {
  font-size: 9px;
  padding: 2px 7px;
  border-radius: 2px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
}

.badge-todo { background: rgba(74,68,54,0.4); color: var(--text-muted); }
.badge-wip { background: rgba(240,160,48,0.1); color: var(--amber); border: 1px solid rgba(240,160,48,0.2); }
.badge-done { background: rgba(122,158,126,0.1); color: var(--green-sage); border: 1px solid rgba(122,158,126,0.2); }

.module-budget { font-size: 11px; color: var(--text-secondary); font-family: var(--font-mono); }

/* Modal module detail */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 150ms ease;
}

.modal {
  background: var(--bg-panel);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 700px;
  max-height: 80vh;
  overflow-y: auto;
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: var(--bg-panel);
}

.modal-title { font-family: var(--font-display); font-size: 20px; font-weight: 700; }
.modal-close { background: none; border: none; color: var(--text-muted); font-size: 20px; cursor: pointer; padding: 4px 8px; }
.modal-close:hover { color: var(--text-primary); }
.modal-body { padding: 20px 24px; }

/* ============================================
   APPROVISIONNEMENT — Liste matériaux
   ============================================ */

.supply-table { width: 100%; border-collapse: collapse; }

.supply-row {
  display: grid;
  grid-template-columns: 1fr 80px 100px 120px 90px 60px;
  align-items: center;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  gap: 8px;
  transition: background var(--transition);
}

.supply-row:hover { background: var(--bg-hover); }

.supply-row.header {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-bright);
  padding: 6px 12px;
}

.supply-name { font-size: 13px; color: var(--text-primary); }
.supply-cat {
  font-size: 9px;
  padding: 2px 6px;
  border-radius: 2px;
  text-transform: uppercase;
  background: var(--bg-card);
  color: var(--text-muted);
  width: fit-content;
}

.supply-link { font-size: 11px; color: var(--amber); text-decoration: none; }
.supply-link:hover { text-decoration: underline; }

.supply-status {
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 2px;
  text-transform: uppercase;
  font-weight: 700;
}

.status-acommander { background: rgba(74,68,54,0.4); color: var(--text-muted); }
.status-commande { background: rgba(90,122,158,0.1); color: var(--blue-slate); }
.status-recu { background: rgba(122,158,126,0.1); color: var(--green-sage); }
.status-pose { background: rgba(200,121,65,0.1); color: var(--copper); }

.supply-total { font-family: var(--font-mono); font-size: 12px; font-weight: 700; color: var(--text-primary); }

/* ============================================
   ASSISTANT CLAUDE
   ============================================ */

.assistant-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 16px;
  min-height: calc(100vh - 180px);
}

.chat-container {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  height: calc(100vh - 200px);
}

.chat-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.message { display: flex; gap: 10px; max-width: 90%; }
.message.user { align-self: flex-end; flex-direction: row-reverse; }
.message.assistant { align-self: flex-start; }

.message-avatar {
  width: 30px; height: 30px;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
  font-family: var(--font-display);
  font-weight: 700;
}

.message.user .message-avatar { background: rgba(240,160,48,0.12); color: var(--amber); border: 1px solid rgba(240,160,48,0.25); }
.message.assistant .message-avatar { background: rgba(122,158,126,0.1); color: var(--green-sage); border: 1px solid rgba(122,158,126,0.2); }

.message-bubble {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-secondary);
}

.message.user .message-bubble {
  background: rgba(240,160,48,0.06);
  border-color: rgba(240,160,48,0.15);
  color: var(--text-primary);
}

.chat-input-area {
  border-top: 1px solid var(--border);
  padding: 12px 16px;
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.chat-input-area textarea {
  flex: 1;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 8px 12px;
  resize: none;
  height: 40px;
  max-height: 120px;
  outline: none;
  transition: border-color var(--transition);
}

.chat-input-area textarea:focus { border-color: var(--amber); }

/* Knowledge base sidebar */
.kb-sidebar {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.kb-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius);
  padding: 12px 14px;
  cursor: pointer;
  transition: all var(--transition);
}

.kb-item:hover { border-color: var(--border-bright); background: var(--bg-hover); }

.kb-item-title { font-size: 12px; color: var(--text-primary); font-weight: 500; margin-bottom: 4px; }
.kb-item-meta { font-size: 10px; color: var(--text-muted); }
.kb-item-tag {
  display: inline-block;
  font-size: 9px;
  padding: 1px 5px;
  border-radius: 2px;
  text-transform: uppercase;
  margin-right: 4px;
}

.tag-reglementation { background: rgba(90,122,158,0.15); color: var(--blue-slate); }
.tag-technique { background: rgba(200,121,65,0.15); color: var(--copper); }
.tag-fournisseur { background: rgba(122,158,126,0.15); color: var(--green-sage); }
.tag-conseil { background: rgba(240,160,48,0.15); color: var(--amber); }

/* ============================================
   BOUTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary { background: var(--amber); color: var(--bg-primary); font-weight: 700; }
.btn-primary:hover { background: #f5b040; box-shadow: 0 0 16px rgba(240,160,48,0.3); }

.btn-secondary { background: var(--bg-card); color: var(--text-secondary); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--amber); color: var(--amber); }

.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text-secondary); border-color: var(--border-bright); }

.btn-success { background: rgba(122,158,126,0.1); color: var(--green-sage); border: 1px solid rgba(122,158,126,0.25); }
.btn-success:hover { background: rgba(122,158,126,0.2); }

.btn-full { width: 100%; justify-content: center; }
.btn-lg { padding: 11px 22px; font-size: 12px; }
.btn-sm { padding: 5px 10px; font-size: 10px; }

/* ============================================
   FORMS
   ============================================ */

.form-group { margin-bottom: 14px; }

.form-label {
  display: block;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 5px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 8px 11px;
  outline: none;
  transition: border-color var(--transition);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--amber);
  box-shadow: 0 0 0 2px rgba(240,160,48,0.08);
}

.form-textarea { resize: vertical; min-height: 80px; line-height: 1.5; }
.form-select option { background: var(--bg-panel); }

/* ============================================
   TYPING / LOADING
   ============================================ */

.typing-indicator { display: flex; align-items: center; gap: 4px; padding: 6px 0; }
.typing-dot { width: 5px; height: 5px; background: var(--amber); border-radius: 50%; animation: typing 1.2s infinite; }
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing { 0%, 60%, 100% { transform: translateY(0); opacity: 0.3; } 30% { transform: translateY(-5px); opacity: 1; } }

.ai-generating {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 14px;
  background: rgba(240,160,48,0.05);
  border: 1px solid rgba(240,160,48,0.15);
  border-radius: var(--radius);
  font-size: 12px; color: var(--amber);
}

.ai-spinner {
  width: 14px; height: 14px;
  border: 2px solid rgba(240,160,48,0.2);
  border-top-color: var(--amber);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

@keyframes spin { to { transform: rotate(360deg); } }

.empty-state { text-align: center; padding: 40px 20px; color: var(--text-muted); }
.empty-icon { font-size: 28px; margin-bottom: 10px; }
.empty-text { font-size: 12px; line-height: 1.6; }

/* ============================================
   SCROLLBAR
   ============================================ */

* { scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
*::-webkit-scrollbar { width: 5px; height: 5px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

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

@media (max-width: 1100px) {
  .assistant-layout, .grid-sidebar { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  #app { padding: 12px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .project-stats { flex-wrap: wrap; gap: 16px; }
  .supply-row { grid-template-columns: 1fr 80px 80px; }
  .supply-row > *:nth-child(n+4) { display: none; }
}