:root {
  --bg: #f6f6f4;
  --surface: #ffffff;
  --surface-2: #f0f0ed;
  --border: #e4e4e0;
  --text: #1a1a1a;
  --muted: #6b6b66;
  --accent: #3b5bdb;
  --accent-soft: #e8ecfb;
  --accent-text: #ffffff;
  --success: #2b8a3e;
  --success-soft: #e6f4ea;
  --danger: #c92a2a;
  --danger-soft: #fdecec;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 1px 1px rgba(0, 0, 0, 0.02);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141414;
    --surface: #1d1d1c;
    --surface-2: #262625;
    --border: #2f2f2d;
    --text: #ededea;
    --muted: #9a9a94;
    --accent: #748ffc;
    --accent-soft: #232a45;
    --accent-text: #0f1224;
    --success: #69db7c;
    --success-soft: #1d3324;
    --danger: #ff8787;
    --danger-soft: #3a2222;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; -webkit-tap-highlight-color: transparent; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p { margin: 0; }
h1 { font-size: 1.5rem; line-height: 1.25; letter-spacing: -0.01em; }
h2 { font-size: 1.15rem; line-height: 1.3; }

button, input { font: inherit; color: inherit; }
button { cursor: pointer; touch-action: manipulation; }
[hidden] { display: none !important; }

.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.eyebrow { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); font-weight: 600; }

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 16px 16px calc(40px + env(safe-area-inset-bottom));
}

/* Barre du haut */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding-top: env(safe-area-inset-top);
}
.topbar-inner {
  max-width: 640px;
  margin: 0 auto;
  padding: 10px max(16px, env(safe-area-inset-right)) 10px max(16px, env(safe-area-inset-left));
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 52px;
}
.brand { font-weight: 700; }

/* Cartes */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.hero { padding: 24px 2px 20px; }
.hero h1 { font-size: 1.75rem; margin-bottom: 8px; }

/* Formulaires */
.stack { display: flex; flex-direction: column; gap: 14px; }
.row { display: flex; gap: 10px; }
.grow { flex: 1 1 0; min-width: 0; }
.grow-2 { flex: 2 1 0; min-width: 0; }

label { display: flex; flex-direction: column; gap: 6px; font-size: 0.875rem; font-weight: 600; }
label .muted { font-weight: 400; }

input:not([type="checkbox"]) {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  font-size: 1rem;
  font-weight: 400;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.code-input { text-transform: uppercase; letter-spacing: 0.15em; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.hint { font-size: 0.8125rem; color: var(--muted); margin-top: -4px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-weight: 600;
  transition: background 0.15s, opacity 0.15s, transform 0.05s;
}
.btn:hover { background: var(--surface-2); }
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.55; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.primary:hover { opacity: 0.92; }
.btn.ghost { background: transparent; border-color: transparent; }
.btn.danger { color: var(--danger); }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 0;
  background: transparent;
  color: var(--muted);
}
.icon-btn:hover { background: var(--surface-2); color: var(--text); }

/* Contrôle segmenté + onglets */
.segmented, .tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: var(--surface-2);
  border-radius: 11px;
}
.segmented { margin-bottom: 18px; }
.segmented button, .tabs button {
  flex: 1;
  border: 0;
  background: transparent;
  padding: 10px 6px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--muted);
  white-space: nowrap;
}
.segmented button[aria-selected="true"], .tabs button[aria-selected="true"] {
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}
.tabs {
  margin: 16px 0 12px;
  position: sticky;
  top: calc(60px + env(safe-area-inset-top));
  z-index: 5;
  border: 1px solid var(--border);
}

/* Résumé équipe */
.summary { display: flex; flex-direction: column; gap: 12px; }
.summary-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; }
.summary-head h1 { overflow-wrap: anywhere; }
.summary-score { text-align: right; white-space: nowrap; }
.summary-score strong { font-size: 1.5rem; font-variant-numeric: tabular-nums; }

/* Statut (en cours / réussi / perdu) */
.status {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--surface-2);
}
.status-title { font-weight: 700; font-variant-numeric: tabular-nums; }
.status-sub { font-size: 0.875rem; color: var(--muted); }
.status.won { background: var(--success-soft); }
.status.won .status-title { color: var(--success); }
.status.lost { background: var(--danger-soft); }
.status.lost .status-title { color: var(--danger); }
.summary.won .bar > span { background: var(--success); }
.summary.lost .bar > span { background: var(--danger); }

.closed-msg {
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--surface-2);
  color: var(--muted);
  font-size: 0.9375rem;
}

/* Barres de progression */
.bar {
  height: 6px;
  background: var(--surface-2);
  border-radius: 999px;
  overflow: hidden;
}
.bar.lg { height: 10px; }
.bar > span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent);
  border-radius: inherit;
  transition: width 0.4s ease;
}
.bar.done > span { background: var(--success); }

/* Listes */
.list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.list.compact { gap: 0; }

.toolbar { display: flex; justify-content: flex-end; margin-bottom: 10px; }
.switch { flex-direction: row; align-items: center; gap: 8px; font-weight: 500; color: var(--muted); cursor: pointer; }
.switch input { width: 16px; height: 16px; accent-color: var(--accent); }

.challenge {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  text-align: left;
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: border-color 0.15s;
}
@media (hover: hover) {
  .challenge:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
}
.challenge:active { transform: scale(0.99); }
.challenge-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 8px; }
.challenge-top { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.challenge-title { font-weight: 600; overflow-wrap: anywhere; }
.challenge-count { font-size: 0.875rem; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.challenge-count b { color: var(--text); font-weight: 600; }
.challenge-desc { font-size: 0.8125rem; color: var(--muted); margin-top: -4px; }
.challenge .add {
  flex: none;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
}
.challenge.is-done .add { background: var(--success-soft); color: var(--success); }
.closed .challenge:not(.is-done) .add { visibility: hidden; }

.tag {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--surface-2);
  color: var(--muted);
  vertical-align: 2px;
  margin-left: 6px;
}

.item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.item-main { flex: 1; min-width: 0; }
.item-main p { overflow-wrap: anywhere; }
.item-side { text-align: right; font-size: 0.875rem; color: var(--muted); white-space: nowrap; }

.avatar {
  flex: none;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--surface-2);
  color: var(--muted);
  font-weight: 700;
  font-size: 0.875rem;
}


.list.compact .item {
  border: 0;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  padding: 10px 2px;
  background: transparent;
}
.list.compact .item:last-child { border-bottom: 0; }

.empty {
  padding: 28px 16px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  list-style: none;
}
.list.compact .empty { border: 0; padding: 12px 0; text-align: left; }

.link-btn {
  border: 0;
  background: none;
  padding: 10px 8px;
  font-size: 0.8125rem;
  color: var(--danger);
  font-weight: 600;
  border-radius: 6px;
}
.link-btn:hover { background: var(--surface-2); }

/* Invitation */
.invite { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 1.5rem; font-weight: 700; letter-spacing: 0.15em; margin: 2px 0 4px; }
#leave-btn { margin-top: 16px; width: 100%; }

/* Feuille (bottom sheet) */
.sheet { position: fixed; inset: 0; z-index: 50; display: flex; align-items: flex-end; justify-content: center; }
.sheet-backdrop { position: absolute; inset: 0; background: rgba(0, 0, 0, 0.35); animation: fade 0.2s ease; }
.sheet-panel {
  position: relative;
  width: 100%;
  max-width: 560px;
  max-height: 88vh;
  max-height: 88dvh;
  overscroll-behavior: contain;
  overflow-y: auto;
  background: var(--surface);
  border-radius: 18px 18px 0 0;
  padding: 20px 18px calc(20px + env(safe-area-inset-bottom));
  animation: slide 0.22s ease;
}
@media (min-width: 640px) {
  .sheet { align-items: center; }
  .sheet-panel { border-radius: 18px; }
}
.sheet-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; margin-bottom: 16px; }
.sheet-progress { margin-bottom: 18px; }
.sheet-count { margin-bottom: 8px; font-variant-numeric: tabular-nums; }
.sheet-count strong { font-size: 1.75rem; }

.quick { display: flex; flex-wrap: wrap; gap: 8px; }
.quick button {
  flex: 1 1 0;
  min-width: 60px;
  padding: 12px 8px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.quick button:hover { border-color: var(--accent); }
.quick button[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }

.section-title { font-size: 0.8125rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin: 22px 0 4px; }

/* Preuves */
.proof { display: flex; flex-direction: column; gap: 10px; }
.proof-btn { justify-content: flex-start; font-weight: 600; }
.proof-btn .muted { font-weight: 400; }
.thumbs { display: flex; flex-wrap: wrap; gap: 8px; }
.thumbs:empty { display: none; }
.thumb {
  position: relative;
  width: 64px;
  height: 64px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--surface-2);
}
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb .remove {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 0;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  font-size: 14px;
  line-height: 22px;
  padding: 0;
}
.item .thumbs { margin-top: 8px; }
.item .thumb { width: 56px; height: 56px; }

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: grid;
  place-items: center;
  padding: calc(16px + env(safe-area-inset-top)) 16px calc(16px + env(safe-area-inset-bottom));
  background: rgba(0, 0, 0, 0.9);
  animation: fade 0.15s ease;
}
.lightbox img { max-width: 100%; max-height: 100%; object-fit: contain; border-radius: 8px; }
.lightbox .icon-btn {
  position: absolute;
  top: calc(12px + env(safe-area-inset-top));
  right: 12px;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

/* Défis ajoutés par l'équipe */
.btn.dashed {
  width: 100%;
  margin-top: 10px;
  border-style: dashed;
  background: transparent;
  color: var(--muted);
}
.btn.dashed:hover { color: var(--text); }
#delete-challenge-btn { width: 100%; margin-top: 12px; }

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(20px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  z-index: 60;
  max-width: calc(100% - 32px);
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--text);
  color: var(--bg);
  font-size: 0.9375rem;
  font-weight: 500;
  animation: fade 0.2s ease;
}
.toast.error { background: var(--danger); color: #fff; }

@keyframes fade { from { opacity: 0; } }
@keyframes slide { from { transform: translateY(24px); opacity: 0; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

@media (max-width: 400px) {
  .tabs button { font-size: 0.8125rem; padding: 8px 2px; }
  .row { flex-direction: column; }
}