/* ==========================================================================
   ThermoStudio CVC — Design system
   Palette "instrument de mesure" : ardoise/graphite + accent cyan technique
   ========================================================================== */

:root{
  --font-ui: 'IBM Plex Sans', -apple-system, Segoe UI, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;

  --accent: #2DD4BF;       /* teal — signal "froid / mesure" */
  --accent-dim: #1C8F82;
  --accent-warm: #F0A93C;  /* ambre — chaud / alerte */
  --danger: #EF6A5F;
  --success: #4ADE80;

  --shadow-lg: 0 20px 40px -12px rgba(0,0,0,.45);
  --shadow-sm: 0 2px 8px rgba(0,0,0,.25);

  --sidebar-w: 232px;
  --topbar-h: 64px;
}

[data-theme="dark"]{
  --bg: #0D141C;
  --bg-elevated: #111A24;
  --surface: #16212C;
  --surface-2: #1C2A38;
  --surface-hover: #20303F;
  --border: #263748;
  --text: #E7EEF3;
  --text-dim: #90A4B7;
  --text-faint: #5C7086;
  --grid-line: #1E2B38;
}

[data-theme="light"]{
  --bg: #EEF2F5;
  --bg-elevated: #F7FAFB;
  --surface: #FFFFFF;
  --surface-2: #F1F5F7;
  --surface-hover: #E7EDF1;
  --border: #D6E0E6;
  --text: #16212C;
  --text-dim: #4C5D6B;
  --text-faint: #8397A4;
  --grid-line: #DCE6EB;
}

*,*::before,*::after{box-sizing:border-box;}
html,body{height:100%;}
body{
  margin:0;
  font-family:var(--font-ui);
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  font-size:14px;
  line-height:1.5;
}
h1,h2,h3{font-family:var(--font-ui);font-weight:600;margin:0 0 4px;letter-spacing:-.01em;}
h1{font-size:22px;}
h3{font-size:15px;color:var(--text);}
p{margin:0;}
.muted{color:var(--text-dim);font-size:13px;}
.hidden{display:none !important;}
button{font-family:inherit;}
input,select{
  font-family:var(--font-mono);
  font-size:13px;
  background:var(--bg-elevated);
  border:1px solid var(--border);
  color:var(--text);
  border-radius:var(--radius-sm);
  padding:7px 9px;
  width:100%;
}
input:focus,select:focus,button:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:1px;
}
label{display:flex;flex-direction:column;gap:4px;font-size:12.5px;color:var(--text-dim);font-weight:500;}

/* ---------------- App shell ---------------- */
#app{display:flex;height:100vh;overflow:hidden;}

.sidebar{
  width:var(--sidebar-w);
  flex-shrink:0;
  background:var(--bg-elevated);
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  padding:18px 12px;
}
.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 20px;}
.brand__mark{width:28px;height:28px;color:var(--accent);flex-shrink:0;}
.brand__text{display:flex;flex-direction:column;line-height:1.2;}
.brand__text strong{font-size:15px;}
.brand__text span{font-size:10.5px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.06em;}

.nav{display:flex;flex-direction:column;gap:2px;flex:1;}
.nav__item{
  display:flex;align-items:center;gap:10px;
  background:none;border:none;color:var(--text-dim);
  padding:9px 10px;border-radius:var(--radius-sm);
  cursor:pointer;text-align:left;font-size:13px;font-weight:500;
  transition:background .12s, color .12s;
}
.nav__item:hover{background:var(--surface-hover);color:var(--text);}
.nav__item.is-active{background:var(--surface-2);color:var(--accent);}
.nav__item i{width:16px;height:16px;flex-shrink:0;}

.sidebar__footer{border-top:1px solid var(--border);padding-top:12px;}
.ghost-btn{
  display:flex;align-items:center;gap:8px;width:100%;
  background:none;border:1px solid var(--border);color:var(--text-dim);
  padding:8px 10px;border-radius:var(--radius-sm);cursor:pointer;font-size:12.5px;
}
.ghost-btn:hover{background:var(--surface-hover);}

.main{flex:1;display:flex;flex-direction:column;min-width:0;}

/* ---------------- Topbar ---------------- */
.topbar{
  height:var(--topbar-h);flex-shrink:0;
  display:flex;align-items:center;gap:24px;
  padding:0 24px;border-bottom:1px solid var(--border);
  background:var(--bg-elevated);
}
.topbar__project{display:flex;flex-direction:column;min-width:160px;}
.topbar__project .label{font-size:10px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint);}
.topbar__project strong{font-size:14px;}
.topbar__readout{display:flex;gap:28px;margin-left:auto;}
.readout{display:flex;flex-direction:column;align-items:flex-end;}
.readout__label{font-size:10px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.05em;}
.readout__value{font-family:var(--font-mono);font-size:18px;font-weight:600;color:var(--accent);}
.topbar__actions{display:flex;gap:8px;}

/* ---------------- Buttons ---------------- */
.btn{
  border-radius:var(--radius-sm);border:1px solid transparent;
  padding:8px 14px;font-size:13px;font-weight:600;cursor:pointer;
  transition:transform .08s, background .12s;
}
.btn:active{transform:translateY(1px);}
.btn--primary{background:var(--accent);color:#062521;}
.btn--primary:hover{background:#3EE5CF;}
.btn--ghost{background:var(--surface-2);color:var(--text);border-color:var(--border);}
.btn--ghost:hover{background:var(--surface-hover);}
.btn--danger{background:transparent;color:var(--danger);border-color:var(--danger);}
.btn--danger:hover{background:rgba(239,106,95,.1);}
.btn--sm{padding:6px 10px;font-size:12px;}
.btn:disabled{opacity:.4;cursor:not-allowed;}

/* ---------------- Views ---------------- */
.views{flex:1;overflow-y:auto;padding:24px 28px 60px;}
.view{display:none;}
.view.is-active{display:block;animation:fadein .18s ease;}
@keyframes fadein{from{opacity:0;transform:translateY(4px);}to{opacity:1;transform:none;}}
.view__header{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:20px;gap:16px;flex-wrap:wrap;}
.view__actions{display:flex;gap:8px;align-items:center;}

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

/* ---------------- Dashboard / project cards ---------------- */
.project-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;}
.project-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:18px;cursor:pointer;transition:border-color .12s, transform .12s;
  display:flex;flex-direction:column;gap:10px;
}
.project-card:hover{border-color:var(--accent);transform:translateY(-2px);}
.project-card__type{
  align-self:flex-start;font-size:10px;text-transform:uppercase;letter-spacing:.05em;
  color:var(--accent);background:rgba(45,212,191,.12);padding:3px 8px;border-radius:20px;
}
.project-card h3{font-size:16px;}
.project-card .meta{font-size:12px;color:var(--text-faint);}
.project-card__stats{display:flex;gap:16px;margin-top:auto;padding-top:10px;border-top:1px solid var(--border);}
.project-card__stats div{display:flex;flex-direction:column;}
.project-card__stats span:first-child{font-family:var(--font-mono);font-weight:600;font-size:14px;color:var(--text);}
.project-card__stats span:last-child{font-size:10px;color:var(--text-faint);}
.project-card__actions{display:flex;gap:6px;}
.empty-state{
  grid-column:1/-1;text-align:center;padding:60px 20px;color:var(--text-faint);
  border:1px dashed var(--border);border-radius:var(--radius-lg);
}

/* ---------------- Forms ---------------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 16px;}
.form-grid--tight{grid-template-columns:1fr;gap:10px;}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:10px;grid-column:1/-1;}
.fieldset{grid-column:1/-1;border:1px solid var(--border);border-radius:var(--radius-md);padding:12px;display:flex;flex-direction:column;gap:10px;}
.fieldset legend{font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--text-faint);padding:0 4px;}
.readout-mini{display:flex;gap:16px;font-size:12.5px;color:var(--text-dim);grid-column:1/-1;}
.readout-mini strong{color:var(--accent);font-family:var(--font-mono);}
.toggle{display:flex;flex-direction:row;align-items:center;gap:6px;font-size:12.5px;color:var(--text-dim);width:auto;}
.toggle input{width:auto;}

/* ---------------- Drawing view ---------------- */
.drawing-layout{display:grid;grid-template-columns:1fr 280px;grid-template-rows:auto 1fr;gap:14px;height:calc(100vh - var(--topbar-h) - 48px);}
.toolbar{
  grid-column:1/-1;display:flex;align-items:center;gap:20px;flex-wrap:wrap;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
  padding:8px 14px;
}
.toolbar__group{display:flex;align-items:center;gap:6px;}
.toolbar__levels select{width:auto;}
.tool-btn{
  width:34px;height:34px;display:flex;align-items:center;justify-content:center;
  background:none;border:1px solid transparent;border-radius:var(--radius-sm);
  color:var(--text-dim);cursor:pointer;
}
.tool-btn i{width:17px;height:17px;}
.tool-btn:hover{background:var(--surface-hover);}
.tool-btn.is-active{background:var(--accent);border-color:var(--accent);color:#062521;}
.btn--ghost.is-active{background:var(--accent);border-color:var(--accent);color:#062521;}

.canvas-wrap{
  position:relative;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);overflow:hidden;
}
#plan-canvas{width:100%;height:100%;display:block;cursor:crosshair;}
.canvas-hint{
  position:absolute;bottom:14px;left:14px;background:var(--bg-elevated);
  border:1px solid var(--border);color:var(--text-dim);font-size:12px;
  padding:6px 12px;border-radius:20px;pointer-events:none;
}
#plan-minimap{
  position:absolute;bottom:14px;right:14px;border-radius:var(--radius-sm);
  border:1px solid var(--border);box-shadow:var(--shadow-sm);cursor:pointer;
}

.properties-panel{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:16px;overflow-y:auto;
}
.properties-panel h3{margin-bottom:12px;}

/* ---------------- Materials / tables ---------------- */
.table-wrap{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;margin-top:4px;}
.data-table{width:100%;border-collapse:collapse;font-size:13px;}
.data-table th{
  text-align:left;font-size:10.5px;text-transform:uppercase;letter-spacing:.05em;
  color:var(--text-faint);background:var(--surface-2);padding:10px 14px;border-bottom:1px solid var(--border);
}
.data-table td{padding:10px 14px;border-bottom:1px solid var(--border);font-family:var(--font-mono);color:var(--text);}
.data-table tbody tr:hover{background:var(--surface-hover);}
.data-table tfoot td{font-weight:700;background:var(--surface-2);}
.data-table .actions{display:flex;gap:6px;font-family:var(--font-ui);}
.pill{font-size:10px;padding:2px 8px;border-radius:20px;background:var(--surface-2);color:var(--text-dim);text-transform:capitalize;}

/* ---------------- Modal ---------------- */
.modal{position:fixed;inset:0;background:rgba(4,8,12,.6);display:flex;align-items:center;justify-content:center;z-index:50;}
.modal__panel{width:520px;max-height:86vh;overflow-y:auto;box-shadow:var(--shadow-lg);}
.modal__actions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px;}
.layer-row{display:grid;grid-template-columns:2fr 1fr 1fr 1fr auto;gap:8px;align-items:end;margin-bottom:8px;}
.layer-row .btn--danger{padding:6px;}
.composition-summary{margin-top:14px;padding:10px 12px;background:var(--surface-2);border-radius:var(--radius-sm);font-size:13px;}
.composition-summary strong{color:var(--accent);font-family:var(--font-mono);}

/* ---------------- Results ---------------- */
.summary-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin-bottom:20px;}
.summary-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px;}
.summary-card .label{font-size:11px;text-transform:uppercase;color:var(--text-faint);letter-spacing:.04em;}
.summary-card .value{font-family:var(--font-mono);font-size:26px;font-weight:700;margin-top:6px;}
.summary-card.accent-warm .value{color:var(--accent-warm);}
.summary-card.accent-cool .value{color:var(--accent);}
.charts-row{display:grid;grid-template-columns:1.4fr 1fr;gap:16px;margin-bottom:20px;}
.chart-panel canvas{max-height:280px;}

/* ---------------- Reports ---------------- */
.reports-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;}
.report-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:20px;display:flex;flex-direction:column;gap:8px;align-items:flex-start;cursor:pointer;text-align:left;
}
.report-card:hover{border-color:var(--accent);}
.report-card i{width:22px;height:22px;color:var(--accent);}
.report-card span{font-size:12.5px;color:var(--text-dim);}

/* ---------------- Toasts ---------------- */
.toast-stack{position:fixed;bottom:20px;right:20px;display:flex;flex-direction:column;gap:8px;z-index:100;}
.toast{
  background:var(--surface);border:1px solid var(--border);border-left:3px solid var(--accent);
  padding:10px 16px;border-radius:var(--radius-sm);font-size:13px;box-shadow:var(--shadow-sm);
  animation:slidein .18s ease;
}
.toast.error{border-left-color:var(--danger);}
@keyframes slidein{from{opacity:0;transform:translateX(12px);}to{opacity:1;transform:none;}}

/* ---------------- Icons (inline SVG via data-icon) ---------------- */
i[data-icon]{display:inline-block;}

/* ---------------- Scrollbars ---------------- */
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:6px;}
::-webkit-scrollbar-track{background:transparent;}

/* ---------------- Responsive ---------------- */
@media (max-width: 980px){
  .sidebar{position:fixed;z-index:40;height:100%;transform:translateX(-100%);transition:transform .2s;}
  .sidebar.is-open{transform:none;}
  .drawing-layout{grid-template-columns:1fr;}
  .properties-panel{max-height:280px;}
  .form-grid{grid-template-columns:1fr;}
  .charts-row{grid-template-columns:1fr;}
  .topbar__readout{gap:14px;}
}

/* ---------------- Print ---------------- */
@media print{
  .sidebar,.topbar,.toolbar,.properties-panel,.view__actions{display:none !important;}
  .views{overflow:visible;padding:0;}
  body{background:#fff;color:#000;}
}