:root {
  --bg: #0e1116;
  --card: #171c24;
  --card2: #1e2530;
  --line: #2a3340;
  --text: #e7edf3;
  --muted: #8b97a6;
  --accent: #35c46b;
  --accent2: #3b82f6;
  --danger: #e5484d;
  --warn: #f5a524;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  padding-bottom: 76px;
}

#topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px; background: rgba(14,17,22,.92);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--line);
}
#brand { font-weight: 700; font-size: 17px; }
#who { color: var(--muted); font-size: 13px; }

#app { padding: 16px; max-width: 620px; margin: 0 auto; }
.center { text-align: center; padding: 40px 0; }
.muted { color: var(--muted); }
h2 { font-size: 15px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); margin: 22px 0 10px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px; margin-bottom: 12px; }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.stat { background: var(--card2); border-radius: 12px; padding: 12px 14px; }
.stat .label { color: var(--muted); font-size: 12px; }
.stat .value { font-size: 20px; font-weight: 700; margin-top: 3px; }
.value.pos { color: var(--accent); }
.value.neg { color: var(--danger); }

.bar { height: 8px; border-radius: 5px; background: var(--card2); overflow: hidden; margin-top: 8px; }
.bar > span { display: block; height: 100%; background: var(--accent); }

button {
  font: inherit; border: none; border-radius: 12px; padding: 14px 16px;
  font-weight: 600; color: #fff; background: var(--accent2); width: 100%;
  cursor: pointer; margin-top: 8px;
}
button:active { transform: scale(.98); }
button.sell { background: var(--accent); font-size: 17px; padding: 18px; }
button.ghost { background: var(--card2); color: var(--text); border: 1px solid var(--line); }
button.danger { background: var(--danger); }
button.small { width: auto; padding: 8px 12px; font-size: 13px; margin: 0; }
button:disabled { opacity: .5; }

.row { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.row:last-child { border-bottom: none; }
.row .sub { color: var(--muted); font-size: 12px; }

input, select {
  font: inherit; width: 100%; padding: 12px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--card2); color: var(--text); margin-top: 6px;
}
label { font-size: 13px; color: var(--muted); }

.pill { font-size: 11px; padding: 2px 8px; border-radius: 20px; background: var(--card2); color: var(--muted); }
.pill.owed { color: var(--warn); }

#tabs {
  position: fixed; bottom: 0; left: 0; right: 0;
  display: flex; background: rgba(14,17,22,.96); backdrop-filter: blur(8px);
  border-top: 1px solid var(--line); padding: 8px env(safe-area-inset-right) calc(8px + env(safe-area-inset-bottom)) env(safe-area-inset-left);
}
#tabs button { background: none; color: var(--muted); border-radius: 0; margin: 0; font-size: 12px; padding: 6px; }
#tabs button.active { color: var(--accent); }

.toast {
  position: fixed; left: 50%; bottom: 90px; transform: translateX(-50%);
  background: var(--card2); border: 1px solid var(--line); color: var(--text);
  padding: 12px 18px; border-radius: 12px; z-index: 50; max-width: 90%;
}
.emoji { font-size: 20px; }

/* Modale de formulaire (remplace prompt(), fiable sur iPhone) */
.modal-bg {
  position: fixed; inset: 0; background: rgba(0,0,0,.6);
  display: flex; align-items: flex-end; justify-content: center; z-index: 100;
}
.modal {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 18px 18px 0 0; padding: 20px 18px calc(20px + env(safe-area-inset-bottom));
  width: 100%; max-width: 620px; max-height: 88vh; overflow-y: auto;
  animation: slideup .18s ease;
}
@keyframes slideup { from { transform: translateY(100%); } to { transform: translateY(0); } }
.modal h3 { margin: 0 0 14px; font-size: 17px; }
.modal .field { margin-bottom: 12px; }
.modal .actions { display: flex; gap: 10px; margin-top: 6px; }
.modal .actions button { margin-top: 0; }

.rowbtns { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.rowbtns button { width: auto; flex: 1 1 auto; margin-top: 0; }
.tag { font-size: 11px; color: var(--muted); }
.inactive { opacity: .5; }