:root{
  --bg:#f5f4f8;
  --panel:#ffffff;
  --ink:#1c1d24;
  --ink-soft:#6a6d78;
  --ink-faint:#9497a1;
  --accent:#5b4bc4;
  --accent-dark:#443a99;
  --accent-soft:#ece9fb;
  --ok:#1f8f6e;
  --ok-soft:#e2f5ee;
  --warn:#c17d1f;
  --warn-soft:#faf0dd;
  --danger:#c23a52;
  --danger-soft:#fbe6ea;
  --border:#e5e3ee;
  --shadow: 0 1px 2px rgba(20,20,40,0.04), 0 8px 24px rgba(20,20,40,0.06);
  --radius: 16px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
}
*{box-sizing:border-box;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family: var(--font);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
.app{ max-width: 980px; margin: 0 auto; padding: 28px 20px 90px; }

/* ---- header ---- */
header.top{
  display:flex; align-items:center; gap:16px; margin-bottom: 22px; flex-wrap:wrap;
}
.avatar{
  width:52px; height:52px; border-radius:50%; flex-shrink:0;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color:#fff; font-weight:800; font-size:1.15rem;
  display:flex; align-items:center; justify-content:center;
}
.top-text{ flex:1; min-width:200px; }
.eyebrow{
  text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.68rem;
  color: var(--accent-dark); font-weight: 800;
}
h1{ font-size: 1.55rem; margin: 2px 0 4px; line-height:1.25; font-weight:800; letter-spacing:-0.01em; }
.subtitle{ color: var(--ink-soft); font-size: 0.88rem; margin: 0; max-width: 60ch; }

.watch-chip{
  display:inline-flex; align-items:center; gap:6px;
  background: var(--ok-soft); color: var(--ok); font-weight:700; font-size:0.72rem;
  padding: 6px 12px; border-radius: 999px; white-space:nowrap; margin-top:2px;
}
.watch-chip .dot{ width:7px; height:7px; border-radius:50%; background: var(--ok); box-shadow: 0 0 0 3px rgba(31,143,110,0.18); }

/* ---- panels ---- */
.panel{
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 24px;
  margin-bottom: 18px;
}
.panel-title{ display:flex; align-items:center; justify-content:space-between; gap:10px; margin-bottom:16px; flex-wrap:wrap; }
.panel-title h2{ margin:0; font-size:1.05rem; font-weight:800; }
.panel-title p{ margin:2px 0 0; font-size:0.78rem; color:var(--ink-soft); }

.badge{
  display:inline-block; font-size:0.68rem; font-weight:800; letter-spacing:.04em; text-transform:uppercase;
  padding: 4px 10px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent-dark);
}

.btn{
  font-weight:700; font-size: 0.86rem;
  padding: 10px 18px; border-radius: 10px; border: none; cursor:pointer;
  background: var(--accent); color: #fff; transition: transform .1s ease, background .15s ease;
  text-decoration:none; display:inline-block;
}
.btn:hover{ background: var(--accent-dark); }
.btn:active{ transform: scale(0.98); }
.reset-link{ font-size: 0.75rem; color: var(--ink-soft); text-decoration: underline; cursor:pointer; background:none; border:none; padding:0; }

footer.foot{ text-align:center; color: var(--ink-faint); font-size: 0.72rem; margin-top: 26px; line-height:1.7; }

/* ---- stats globales : anneau + chiffres ---- */
.global-grid{ display:grid; grid-template-columns: auto 1fr; gap: 24px; align-items:center; }
@media (max-width: 640px){ .global-grid{ grid-template-columns: 1fr; justify-items:center; text-align:center; } }
.stats-row{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
@media (max-width: 640px){ .stats-row{ grid-template-columns: 1fr 1fr; } }
.stat-box{ text-align:center; padding: 6px; }
.stat-number{ font-size: 1.7rem; font-weight: 800; color: var(--ink); font-variant-numeric: tabular-nums; }
.stat-label{ font-size: 0.72rem; color: var(--ink-soft); margin-top: 2px; }

/* ---- anneaux (donut charts, degrade conique calcule en JS) ---- */
.donut{
  width:96px; height:96px; border-radius:50%;
  display:flex; align-items:center; justify-content:center; flex-shrink:0;
}
.donut.small{ width:64px; height:64px; }
.donut-hole{
  border-radius:50%; background:var(--panel);
  display:flex; align-items:center; justify-content:center; flex-direction:column;
}
.donut .donut-hole{ width:70px; height:70px; }
.donut.small .donut-hole{ width:46px; height:46px; }
.donut-pct{ font-weight:800; font-size:1.05rem; }
.donut.small .donut-pct{ font-size:0.78rem; }
.donut-sub{ font-size:0.6rem; color:var(--ink-soft); }

/* ---- graphique hebdomadaire (barres) ---- */
.week-chart{ display:flex; align-items:flex-end; gap:8px; height:110px; margin-top: 6px; }
.week-bar-col{ flex:1; display:flex; flex-direction:column; align-items:center; gap:6px; height:100%; justify-content:flex-end; }
.week-bar-track{ width:100%; max-width:34px; height:80px; display:flex; align-items:flex-end; background: var(--bg); border-radius:8px; overflow:hidden; }
.week-bar-fill{ width:100%; background: var(--accent); border-radius:8px 8px 0 0; transition: height .4s ease; }
.week-bar-col.today .week-bar-fill{ background: var(--accent-dark); }
.week-bar-label{ font-size:0.66rem; color:var(--ink-soft); font-weight:600; text-transform:uppercase; }
.week-bar-col.today .week-bar-label{ color: var(--accent-dark); }
.week-bar-value{ font-size:0.62rem; color: var(--ink-faint); }

/* ---- section par cours ---- */
.course-section{ margin-bottom: 18px; }
.course-head{ display:flex; align-items:center; gap:16px; margin-bottom: 14px; flex-wrap:wrap; }
.course-head-text{ flex:1; min-width:160px; }
.course-head h2{ margin:0 0 4px; font-size:1.15rem; font-weight:800; color: var(--course-accent-dark, var(--accent-dark)); }
.course-head .badge{ background:var(--course-accent-soft, var(--accent-soft)); color:var(--course-accent-dark, var(--accent-dark)); }
.course-stat-line{ font-size:0.78rem; color:var(--ink-soft); margin-top:4px; }

.module-row{
  display:flex; align-items:center; gap:14px;
  border-top: 1px solid var(--border);
  padding: 12px 0;
}
.module-row:first-of-type{ border-top:none; padding-top:0; }
.module-row.locked{ opacity:0.5; }
.module-row .module-num{
  font-weight:800; font-size:0.95rem;
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--course-accent-soft, var(--accent-soft)); color: var(--course-accent-dark, var(--accent-dark));
  display:flex; align-items:center; justify-content:center; flex-shrink:0;
}
.module-row.locked .module-num{ background:#eeedf3; color: var(--ink-faint); }
.module-row .module-info{ flex:1.4; min-width: 0; }
.module-row .module-info h3{ margin:0 0 6px; font-size:0.92rem; font-weight:700; color: var(--ink); }
.mini-bar{ height:6px; border-radius:999px; background: var(--border); overflow:hidden; max-width:220px; }
.mini-bar-fill{ height:100%; border-radius:999px; transition: width .4s ease; }
.module-row .module-status{
  flex:0.9; font-size:0.76rem; color: var(--ink-soft); text-align:right; white-space:nowrap;
}
.module-row .module-status strong{ color: var(--course-accent-dark, var(--accent-dark)); }

.course-link-row{ text-align:center; margin: 18px 0 4px; }

.load-state{ text-align:center; padding: 40px 20px; color: var(--ink-soft); }
.load-state.error{ color: var(--danger); }

/* ---- journal d'activite ---- */
.activity-list{ display:flex; flex-direction:column; }
.activity-row{
  display:flex; align-items:flex-start; gap:12px;
  padding: 11px 0; border-top: 1px solid var(--border);
}
.activity-row:first-of-type{ border-top:none; padding-top:0; }
.activity-icon{
  width:32px; height:32px; border-radius:50%; flex-shrink:0;
  display:flex; align-items:center; justify-content:center; font-size:0.95rem;
  background: var(--accent-soft);
}
.activity-icon.course-geo{ background:#e4f2ee; }
.activity-icon.course-math{ background:#e6edf7; }
.activity-body{ flex:1; min-width:0; }
.activity-text{ font-size:0.86rem; }
.activity-text b{ font-weight:700; }
.activity-time{ font-size:0.72rem; color: var(--ink-faint); margin-top:1px; }
.activity-empty{ text-align:center; color:var(--ink-soft); font-size:0.85rem; padding: 20px 0; }

/* ---- sessions de travail (heure de debut / fin) ---- */
.session-row{
  display:flex; align-items:center; gap:14px;
  padding: 10px 0; border-top: 1px solid var(--border);
  font-size:0.86rem;
}
.session-row:first-of-type{ border-top:none; padding-top:0; }
.session-date{ flex:0 0 110px; font-weight:700; text-transform:capitalize; }
.session-range{ flex:1; color: var(--ink); font-variant-numeric: tabular-nums; }
.session-range .arrow{ color: var(--ink-faint); margin: 0 6px; }
.session-duration{ flex:0 0 auto; color: var(--ink-soft); font-size:0.8rem; background:var(--bg); padding:3px 10px; border-radius:999px; }