@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@300;400;600;700;800&family=JetBrains+Mono:wght@300;400;700&display=swap');

/* ── THÈME SOMBRE (défaut) ───────────────────────────────────── */
:root {
  --bg:         #07090d;
  --surf:       #0d1117;
  --surf2:      #111820;
  --border:     #1c2636;
  --accent:     #00e5ff;
  --red:        #ff3b5c;
  --green:      #00e676;
  --amber:      #ffb300;
  --purple:     #c77dff;
  --text:       #cdd9e5;
  --text-strong:#ffffff;
  --muted:      #3d5166;
  --glow-b:     rgba(0,229,255,.18);
  --glow-r:     rgba(255,59,92,.18);
  --grid-color: rgba(0,229,255,.025);
  --td-border:  rgba(28,38,54,.5);
  --hover-row:  rgba(0,229,255,.03);
}

/* ── THÈME CLAIR ─────────────────────────────────────────────── */
html.light {
  --bg:         #f0f4f8;
  --surf:       #ffffff;
  --surf2:      #e8edf3;
  --border:     #d0dae6;
  --accent:     #0088aa;
  --red:        #e8003a;
  --green:      #00a854;
  --amber:      #d97700;
  --purple:     #7c3aed;
  --text:       #1a2535;
  --text-strong:#1a2535;
  --muted:      #7a94aa;
  --glow-b:     rgba(0,136,170,.12);
  --glow-r:     rgba(232,0,58,.12);
  --grid-color: rgba(0,100,140,.04);
  --td-border:  rgba(180,200,220,.4);
  --hover-row:  rgba(0,136,170,.04);
}
html.light body::before {
  background:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 44px 44px;
}
html.light .modal { box-shadow: 0 20px 60px rgba(0,0,0,.15); }

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Barlow Condensed', sans-serif;
  min-height: 100vh;
  transition: background .3s, color .3s;
}

/* Grid bg */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    linear-gradient(rgba(0,229,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,255,.025) 1px, transparent 1px);
  background-size: 44px 44px;
}

.app { position: relative; z-index: 1; max-width: 1360px; margin: 0 auto; padding: 20px 18px; }

/* ── HEADER ─────────────────────────────────────────────────── */
header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 28px; padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
  gap: 16px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-icon {
  width: 46px; height: 46px; border-radius: 50%;
  border: 2px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  box-shadow: 0 0 24px var(--glow-b), inset 0 0 12px rgba(0,229,255,.06);
}
.brand h1 {
  font-size: 28px; font-weight: 800; letter-spacing: 4px;
  text-transform: uppercase; color: var(--text-strong); line-height: 1;
}
.brand h1 span { color: var(--accent); }
.brand-sub { font-size: 11px; letter-spacing: 3px; color: var(--muted); margin-top: 2px; }

.header-right { display: flex; align-items: center; gap: 20px; }
.live-badge {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--surf);
  font-size: 12px; letter-spacing: 2px; font-weight: 600;
  color: var(--muted); text-transform: uppercase;
  transition: all .4s;
}
.live-badge.on { border-color: var(--green); color: var(--green); box-shadow: 0 0 12px rgba(0,230,118,.15); }
.live-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--muted); transition: all .4s; }
.live-badge.on .dot { background: var(--green); box-shadow: 0 0 8px var(--green); animation: blink 1.4s infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.3} }

#last-update { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); }

/* ── THEME TOGGLE ─────────────────────────────────────────────── */
.theme-toggle {
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--surf); border: 1px solid var(--border);
  color: var(--muted); cursor: pointer; font-size: 17px;
  display: flex; align-items: center; justify-content: center;
  transition: border-color .2s, color .2s, transform .2s;
  flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); transform: rotate(20deg); }

/* ── TABS ────────────────────────────────────────────────────── */
.tabs { display: flex; gap: 4px; margin-bottom: 24px; border-bottom: 1px solid var(--border); }
.tab-btn {
  background: none; border: none; cursor: pointer;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 15px; font-weight: 600; letter-spacing: 2px;
  text-transform: uppercase; color: var(--muted);
  padding: 10px 22px 12px;
  position: relative; transition: color .2s;
}
.tab-btn::after {
  content: ''; position: absolute; bottom: -1px; left: 0; right: 0; height: 2px;
  background: var(--accent); transform: scaleX(0); transition: transform .25s;
}
.tab-btn.active { color: var(--accent); }
.tab-btn.active::after { transform: scaleX(1); }
.tab-btn:hover:not(.active) { color: var(--text); }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── KPI GRID ────────────────────────────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(175px, 1fr));
  gap: 14px; margin-bottom: 22px;
}
.kpi {
  background: var(--surf); border: 1px solid var(--border);
  border-radius: 10px; padding: 18px 18px 14px;
  position: relative; overflow: hidden;
  transition: transform .2s, border-color .3s;
}
.kpi:hover { transform: translateY(-2px); }
.kpi::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; }
.kpi.c-red::before    { background: var(--red);    box-shadow: 0 0 10px var(--glow-r); }
.kpi.c-cyan::before   { background: var(--accent); box-shadow: 0 0 10px var(--glow-b); }
.kpi.c-amber::before  { background: var(--amber);  box-shadow: 0 0 10px rgba(255,179,0,.2); }
.kpi.c-green::before  { background: var(--green);  box-shadow: 0 0 10px rgba(0,230,118,.2); }
.kpi.c-purple::before { background: var(--purple); box-shadow: 0 0 10px rgba(199,125,255,.2); }

.kpi-label { font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.kpi-val   { font-size: 44px; font-weight: 800; color: var(--text-strong); line-height: 1; font-variant-numeric: tabular-nums; }
.kpi-unit  { font-size: 12px; color: var(--muted); margin-top: 3px; font-family: 'JetBrains Mono', monospace; }
.kpi-delta { position: absolute; top: 18px; right: 14px; font-size: 11px; font-family: 'JetBrains Mono', monospace; }
.kpi-delta.up { color: var(--green); }
.kpi-delta.dn { color: var(--red); }

@keyframes flashval { from { color: var(--accent); } to { color: var(--text-strong); } }
.flash { animation: flashval .5s ease-out; }

/* ── CHART CARDS ─────────────────────────────────────────────── */
.charts-row { display: grid; grid-template-columns: 2fr 1fr; gap: 14px; margin-bottom: 22px; }
@media (max-width: 860px) { .charts-row { grid-template-columns: 1fr; } }

.card { background: var(--surf); border: 1px solid var(--border); border-radius: 10px; padding: 18px; }
.card-title {
  font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--muted); margin-bottom: 16px;
  display: flex; align-items: center; gap: 8px;
}
.card-title .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }
.chart-wrap { position: relative; height: 230px; }

/* ── ZONE BARS ───────────────────────────────────────────────── */
.zone-list { display: flex; flex-direction: column; gap: 12px; }
.zone-row  { display: flex; align-items: center; gap: 10px; }
.zone-lbl  { width: 28px; font-size: 12px; letter-spacing: 1px; color: var(--muted); text-transform: uppercase; flex-shrink: 0; }
.zone-bg   { flex: 1; height: 8px; background: var(--border); border-radius: 4px; overflow: hidden; }
.zone-fill { height: 100%; border-radius: 4px; transition: width .7s cubic-bezier(.4,0,.2,1); width: 0; }
.zone-pct  { width: 34px; text-align: right; font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--text); }

/* ── LIVE TABLE ──────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-family: 'JetBrains Mono', monospace; font-size: 12px; }
th {
  text-align: left; padding: 7px 12px;
  font-size: 10px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--muted); border-bottom: 1px solid var(--border);
}
td { padding: 8px 12px; border-bottom: 1px solid var(--td-border); color: var(--text); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--hover-row); }

/* ── HISTORY TAB ─────────────────────────────────────────────── */
.sessions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px; margin-bottom: 22px;
}
.session-card {
  background: var(--surf); border: 1px solid var(--border);
  border-radius: 10px; padding: 20px;
  cursor: pointer; transition: border-color .25s, transform .2s;
  position: relative; overflow: hidden;
}
.session-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--purple));
  transform: scaleX(0); transform-origin: left; transition: transform .3s;
}
.session-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.session-card:hover::before { transform: scaleX(1); }

.sc-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 14px; }
.sc-date   { font-size: 17px; font-weight: 700; color: var(--text-strong); letter-spacing: 1px; }
.sc-id     { font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--muted); }
.sc-stats  { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.sc-stat-label { font-size: 10px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--muted); margin-bottom: 3px; }
.sc-stat-val   { font-size: 22px; font-weight: 700; color: var(--text-strong); }
.sc-stat-unit  { font-size: 11px; color: var(--muted); font-family: 'JetBrains Mono', monospace; }

/* ── SESSION DETAIL MODAL ────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(7,9,13,.88);
  backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity .25s;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--surf); border: 1px solid var(--border);
  border-radius: 14px; padding: 28px;
  width: 90%; max-width: 900px; max-height: 88vh;
  overflow-y: auto;
  transform: translateY(20px); transition: transform .25s;
}
.modal-overlay.open .modal { transform: translateY(0); }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.modal-title  { font-size: 22px; font-weight: 800; color: var(--text-strong); letter-spacing: 2px; text-transform: uppercase; }
.modal-close  {
  background: none; border: 1px solid var(--border); color: var(--muted);
  width: 34px; height: 34px; border-radius: 50%; cursor: pointer;
  font-size: 18px; display: flex; align-items: center; justify-content: center;
  transition: border-color .2s, color .2s;
}
.modal-close:hover { border-color: var(--red); color: var(--red); }

.modal-kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-bottom: 22px; }
.mk       { background: var(--surf2); border-radius: 8px; padding: 14px; text-align: center; }
.mk-label { font-size: 10px; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.mk-val   { font-size: 30px; font-weight: 800; color: var(--text-strong); }
.mk-unit  { font-size: 11px; color: var(--muted); font-family: 'JetBrains Mono', monospace; }

.modal-chart { height: 220px; position: relative; }

/* ── EMPTY STATE ─────────────────────────────────────────────── */
.empty { text-align: center; padding: 60px 20px; color: var(--muted); }
.empty-icon { font-size: 48px; display: block; margin-bottom: 16px; opacity: .35; }
.empty p { font-size: 15px; letter-spacing: 1px; }

/* ── SESSION INFO BAR ────────────────────────────────────────── */
.session-bar {
  background: var(--surf2); border: 1px solid var(--border);
  border-radius: 8px; padding: 10px 18px;
  display: flex; gap: 28px; align-items: center;
  margin-bottom: 18px; flex-wrap: wrap;
}
.sb-item  { font-size: 12px; }
.sb-label { color: var(--muted); letter-spacing: 1.5px; text-transform: uppercase; margin-right: 6px; }
.sb-val   { color: var(--text); font-family: 'JetBrains Mono', monospace; }