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

  :root {
    color-scheme: dark;
    --bg: #0f1117;
    --surface: #181c27;
    --surface2: #1e2335;
    --border: #2a3050;
    --accent: #e8c547;
    --accent2: #4d9fff;
    --accent3: #ff6b6b;
    --accent4: #56c596;
    --text: #e8eaf0;
    --text2: #8892aa;
    --text3: #5a6382;
    --font-sans: 'IBM Plex Sans', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;
  }

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

  body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
  }

  /* ── HEADER ── */
  .header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    background: var(--surface);
    position: sticky;
    top: 0;
    z-index: 100;
  }
  .header-brand {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .header-logo {
    width: 32px; height: 32px;
    background: var(--accent);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 12px; color: #000;
    letter-spacing: 0.5px;
  }
  .header-title { font-size: 15px; font-weight: 600; }
  .header-sub { font-size: 11px; color: var(--text2); font-family: var(--font-mono); }
  .header-date { font-family: var(--font-mono); font-size: 12px; color: var(--accent); }

  /* ── NAV TABS ── */
  .nav {
    display: flex;
    gap: 0;
    padding: 0 24px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
  }
  .nav-tab {
    padding: 10px 18px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text2);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.15s;
  }
  .nav-tab:hover { color: var(--text); }
  .nav-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

  /* ── MAIN ── */
  .main { padding: 24px; max-width: 1400px; margin: 0 auto; }

  .view { display: none; }
  .view.active { display: block; }

  /* ── GRID KPI ── */
  .kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
  }
  .kpi-card {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 16px;
    position: relative;
    overflow: hidden;
  }
  .kpi-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
  }
  .kpi-card.yellow::before { background: var(--accent); }
  .kpi-card.blue::before { background: var(--accent2); }
  .kpi-card.red::before { background: var(--accent3); }
  .kpi-card.green::before { background: var(--accent4); }
  .kpi-label { font-size: 11px; color: var(--text2); text-transform: uppercase; letter-spacing: 0.8px; font-family: var(--font-mono); margin-bottom: 6px; }
  .kpi-value { font-size: 28px; font-weight: 700; font-family: var(--font-mono); line-height: 1; }
  .kpi-sub { font-size: 11px; color: var(--text2); margin-top: 4px; }
  .kpi-delta { font-size: 12px; font-family: var(--font-mono); margin-top: 6px; }
  .kpi-delta.pos { color: var(--accent4); }
  .kpi-delta.neg { color: var(--accent3); }

  /* ── SECTION TITLE ── */
  .section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
  }
  .section-title {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text2);
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .section-title::before {
    content: '';
    display: block;
    width: 3px; height: 14px;
    background: var(--accent);
  }

  /* ── GRID 2 COL ── */
  .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 24px; }
  .grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; margin-bottom: 24px; }
  @media(max-width:900px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

  /* ── CARD ── */
  .card {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 16px;
  }

  /* ── TABLE ── */
  .table-wrap { overflow-x: auto; }
  table { width: 100%; border-collapse: collapse; font-size: 12px; }
  th {
    text-align: left;
    padding: 8px 10px;
    font-family: var(--font-mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text2);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
  }
  td {
    padding: 8px 10px;
    border-bottom: 1px solid rgba(42,48,80,0.5);
    vertical-align: top;
  }
  tr:hover td { background: rgba(255,255,255,0.02); }
  .mono { font-family: var(--font-mono); }
  .tag {
    display: inline-block;
    padding: 2px 7px;
    font-size: 10px;
    font-family: var(--font-mono);
    border-radius: 2px;
    white-space: nowrap;
  }
  .tag-s3 { background: rgba(77,159,255,0.15); color: var(--accent2); }
  .tag-s4 { background: rgba(255,107,107,0.15); color: var(--accent3); }
  .tag-epr { background: rgba(232,197,71,0.15); color: var(--accent); }
  .delta-pos { color: var(--accent4); font-family: var(--font-mono); }
  .delta-neg { color: var(--accent3); font-family: var(--font-mono); }
  .delta-ok  { color: var(--text2); font-family: var(--font-mono); }

  /* ── IMPORT ZONE ── */
  .import-zone {
    border: 2px dashed var(--border);
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s;
    position: relative;
  }
  .import-zone:hover { border-color: var(--accent); }
  .import-zone.drag { border-color: var(--accent); background: rgba(232,197,71,0.04); }
  .import-zone input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
  .import-icon { font-size: 36px; margin-bottom: 12px; }
  .import-title { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
  .import-sub { color: var(--text2); font-size: 12px; }

  /* ── API KEY ── */
  .api-key-row {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
    align-items: center;
  }
  .api-key-row input {
    flex: 1;
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 8px 12px;
    font-family: var(--font-mono);
    font-size: 12px;
    outline: none;
  }
  .api-key-row input:focus { border-color: var(--accent); }
  .btn {
    padding: 8px 16px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    font-family: var(--font-sans);
    transition: opacity 0.15s;
  }
  .btn:hover { opacity: 0.85; }
  .btn-yellow { background: var(--accent); color: #000; }
  .btn-ghost { background: var(--surface2); color: var(--text); border: 1px solid var(--border); }
  .btn-red { background: var(--accent3); color: #fff; }
  .btn-sm { padding: 4px 10px; font-size: 11px; }

  /* ── PROGRESS BARS ── */
  .progress-item { margin-bottom: 14px; }
  .progress-header { display: flex; justify-content: space-between; margin-bottom: 5px; font-size: 12px; }
  .progress-label { color: var(--text); }
  .progress-val { font-family: var(--font-mono); color: var(--text2); }
  .progress-bar { height: 6px; background: var(--border); position: relative; }
  .progress-fill { height: 100%; transition: width 0.6s; }
  .progress-theo {
    position: absolute;
    top: -3px;
    width: 2px; height: 12px;
    background: var(--accent);
  }

  /* ── LOG ── */
  .log-panel {
    background: var(--surface2);
    border: 1px solid var(--border);
    padding: 12px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text2);
    max-height: 200px;
    overflow-y: auto;
    margin-top: 12px;
  }
  .log-line { margin-bottom: 3px; }
  .log-line.ok { color: var(--accent4); }
  .log-line.err { color: var(--accent3); }
  .log-line.info { color: var(--accent); }

  /* ── BADGE EPROUVETTE ── */
  .epr-badge {
    display: inline-flex; align-items: center; gap: 4px;
    background: rgba(232,197,71,0.1);
    border: 1px solid rgba(232,197,71,0.3);
    color: var(--accent);
    padding: 2px 8px;
    font-size: 10px;
    font-family: var(--font-mono);
    cursor: pointer;
  }

  /* ── MODAL ── */
  .modal-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
  }
  .modal-overlay.open { display: flex; }
  .modal {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 24px;
    width: 480px;
    max-width: 95vw;
  }
  .modal-title { font-size: 15px; font-weight: 600; margin-bottom: 16px; }
  .modal label { display: block; font-size: 11px; color: var(--text2); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.5px; }
  .modal input, .modal select, .modal textarea {
    width: 100%;
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 8px 10px;
    font-family: var(--font-sans);
    font-size: 13px;
    margin-bottom: 12px;
    outline: none;
  }
  .modal input:focus, .modal select:focus { border-color: var(--accent); }
  .modal-footer { display: flex; gap: 8px; justify-content: flex-end; margin-top: 8px; }

  /* ── CHART BARS ── */
  .bar-chart { display: flex; align-items: flex-end; gap: 6px; height: 120px; margin-top: 10px; }
  .bar-col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 4px; height: 100%; justify-content: flex-end; }
  .bar-pair { display: flex; gap: 2px; align-items: flex-end; width: 100%; }
  .bar { min-height: 4px; transition: height 0.4s; position: relative; cursor: default; }
  .bar:hover::after {
    content: attr(data-tip);
    position: absolute;
    bottom: 100%; left: 50%; transform: translateX(-50%);
    background: var(--surface2);
    border: 1px solid var(--border);
    padding: 3px 7px;
    font-size: 10px;
    white-space: nowrap;
    pointer-events: none;
    z-index: 10;
  }
  .bar-label { font-size: 9px; color: var(--text3); font-family: var(--font-mono); text-align: center; }

  /* ── SPINNER ── */
  .spinner { display: inline-block; width: 16px; height: 16px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.7s linear infinite; }
  @keyframes spin { to { transform: rotate(360deg); } }

  /* ── OUVRAGE SELECT ── */
  .ouvrage-select {
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 3px 6px;
    font-size: 11px;
    font-family: var(--font-sans);
    cursor: pointer;
    outline: none;
    max-width: 180px;
  }

  .chip {
    display: inline-block;
    padding: 2px 8px;
    font-size: 10px;
    border-radius: 10px;
    background: var(--surface2);
    color: var(--text2);
    margin: 1px;
  }

  .alert {
    padding: 10px 14px;
    font-size: 12px;
    border-left: 3px solid;
    margin-bottom: 12px;
  }
  .alert-warn { border-color: var(--accent); background: rgba(232,197,71,0.05); color: var(--accent); }
  .alert-info { border-color: var(--accent2); background: rgba(77,159,255,0.05); color: var(--accent2); }
  .alert-err  { border-color: var(--accent3); background: rgba(255,107,107,0.05); color: var(--accent3); }

  .empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text3);
  }
  .empty-state .icon { font-size: 48px; margin-bottom: 12px; }
  .empty-state p { font-size: 13px; }

  hr { border: none; border-top: 1px solid var(--border); margin: 20px 0; }

  .legend-row { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 10px; }
  .legend-item { display: flex; align-items: center; gap: 5px; font-size: 11px; color: var(--text2); }
  .legend-dot { width: 10px; height: 10px; border-radius: 50%; }