/* ===== Design system ===== */
:root {
  --bg: #f6f7f9; --surface: #ffffff; --surface-2: #f0f2f5;
  --text: #1a1d23; --muted: #6b7280; --border: #e3e6eb;
  --accent: #4f46e5; --accent-hover: #4338ca; --accent-contrast: #ffffff;
  --danger: #dc2626; --success: #16a34a;
  --shadow: 0 1px 2px rgba(16,24,40,.06), 0 8px 24px rgba(16,24,40,.06);
  --radius: 14px; --radius-sm: 9px; --header-h: 56px; --sheet-h: 74vh; --sheet-peek: 96px;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #0f1115; --surface: #171a20; --surface-2: #1f232b;
  --text: #e7e9ee; --muted: #9aa1ac; --border: #2a2f38;
  --accent: #818cf8; --accent-hover: #a5b0ff; --accent-contrast: #11131a;
  --danger: #f87171; --success: #4ade80;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 10px 30px rgba(0,0,0,.45);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg); color: var(--text); -webkit-font-smoothing: antialiased; }

/* ===== Header ===== */
.app-header { height: var(--header-h); display: flex; align-items: center; justify-content: space-between;
  padding: 0 16px; background: var(--surface); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 1100; }
.brand { font-weight: 700; font-size: 1.15rem; letter-spacing: -.02em; }
.brand .accent { color: var(--accent); }
.theme-toggle { font-size: 1.1rem; line-height: 1; cursor: pointer; width: 40px; height: 40px;
  border-radius: 50%; border: 1px solid var(--border); background: var(--surface-2); color: var(--text); }
.theme-toggle:hover { border-color: var(--accent); }

/* ===== Layout ===== */
.layout { display: flex; flex-direction: column; }
.panel { padding: 16px; display: flex; flex-direction: column; gap: 14px; }
.sheet-handle, .sheet-summary { display: none; }
.map-wrap { width: 100%; }
#map { width: 100%; height: 56vh; }
.intro { margin: 0; color: var(--muted); font-size: .92rem; }

/* ===== Cards ===== */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px; box-shadow: var(--shadow); }

/* ===== Points ===== */
.point-row { display: flex; gap: 8px; align-items: center; margin-bottom: 10px; }
.point-address { position: relative; flex: 1; min-width: 0; }
.point-input { width: 100%; font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius-sm); padding: .6rem .6rem; min-height: 44px; }
.point-input:focus { outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent); }
.point-status { width: 1.1rem; text-align: center; font-weight: 700; color: var(--muted); }
.point-row.is-valid .point-status { color: var(--success); }
.point-row.is-valid .point-input { border-color: var(--success); }

.point-spinner { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); display: none; }
.point-row.is-loading .point-spinner { display: inline-block; }

.point-suggestions { position: absolute; left: 0; right: 0; top: 100%; z-index: 1000;
  list-style: none; margin: 4px 0 0; padding: 4px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius-sm); max-height: 240px;
  overflow-y: auto; box-shadow: var(--shadow); }
.point-suggestion { padding: .6rem .55rem; cursor: pointer; border-radius: 6px; font-size: .92rem; }
.point-suggestion:hover, .point-suggestion.active { background: var(--surface-2); }

/* Stepper de poids */
.weight-stepper { display: inline-flex; align-items: center; border: 1px solid var(--border);
  border-radius: var(--radius-sm); overflow: hidden; background: var(--surface); }
.w-btn { font: inherit; font-size: 1.1rem; line-height: 1; cursor: pointer; border: none;
  background: var(--surface-2); color: var(--text); width: 38px; height: 44px; }
.w-btn:hover { color: var(--accent); }
.w-value { min-width: 30px; text-align: center; font-weight: 600; padding: 0 2px; }

.point-remove { cursor: pointer; border: 1px solid var(--border); background: var(--surface-2);
  color: var(--muted); border-radius: var(--radius-sm); width: 40px; height: 44px; }
.point-remove:hover:not(:disabled) { color: var(--danger); border-color: var(--danger); }
.point-remove:disabled { opacity: .35; cursor: not-allowed; }

/* ===== Buttons ===== */
.btn { font: inherit; cursor: pointer; padding: .6rem .9rem; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--surface); color: var(--text); min-height: 44px; }
.btn:hover:not(:disabled) { border-color: var(--accent); }
.btn:disabled { opacity: .6; cursor: not-allowed; }
.btn-add { width: 100%; margin-top: 4px; color: var(--accent); border-style: dashed; }
.btn-primary { background: var(--accent); color: var(--accent-contrast); border-color: transparent;
  font-weight: 600; width: 100%; padding: .75rem; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }

/* ===== Action bar ===== */
.action-bar { position: sticky; bottom: 0; padding: 12px 0 4px;
  background: linear-gradient(to top, var(--bg) 70%, transparent); }
.legend { margin: 0; color: var(--muted); font-size: .8rem; }

/* ===== Résultat ===== */
.result { background: var(--surface-2); border: 1px solid var(--border);
  border-left: 4px solid var(--accent); border-radius: var(--radius-sm); padding: 12px 14px; font-size: .95rem; }
.result .result-label { font-weight: 600; }
.result .result-coords { color: var(--muted); font-size: .85rem; }
.result.is-warning { border-left-color: var(--danger); }

/* ===== Spinner ===== */
.spinner { width: 16px; height: 16px; border: 2px solid color-mix(in srgb, var(--muted) 40%, transparent);
  border-top-color: var(--accent); border-radius: 50%; animation: spin .7s linear infinite; }
.btn .spinner { width: 16px; height: 16px; border-top-color: var(--accent-contrast);
  border-color: color-mix(in srgb, var(--accent-contrast) 40%, transparent); border-top-color: var(--accent-contrast);
  display: inline-block; vertical-align: -3px; margin-right: 8px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Toasts ===== */
.toast-container { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  z-index: 2000; display: flex; flex-direction: column; gap: 8px; width: max-content; max-width: 90vw; }
.toast { padding: .7rem 1rem; border-radius: var(--radius-sm); color: #fff; box-shadow: var(--shadow);
  font-size: .9rem; opacity: 0; transform: translateY(10px); transition: opacity .25s, transform .25s; }
.toast.is-visible { opacity: 1; transform: translateY(0); }
.toast-info { background: #334155; }
.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }

/* ===== Leaflet ===== */
.map-candidate button { font: inherit; cursor: pointer; margin-top: 2px; background: var(--accent);
  color: var(--accent-contrast); border: none; border-radius: 8px; padding: .55rem .85rem; font-weight: 600; min-height: 40px; }
.bar-pin { background: transparent; border: none; }

/* ===== Desktop (≥900px) ===== */
@media (min-width: 900px) {
  .layout { flex-direction: row; height: calc(100vh - var(--header-h)); }
  .panel { width: 380px; min-width: 380px; overflow-y: auto; border-right: 1px solid var(--border); }
  .map-wrap { flex: 1; }
  #map { height: 100%; }
}

/* ===== Mobile (<900px) : carte plein écran + bottom sheet ===== */
@media (max-width: 899px) {
  html, body { overflow: hidden; }
  .layout { display: block; }
  .map-wrap { position: fixed; inset: var(--header-h) 0 0 0; }
  #map { height: 100%; }

  .panel { position: fixed; left: 0; right: 0; bottom: 0; z-index: 1200; height: var(--sheet-h);
    padding: 0 16px 16px; background: var(--surface); border-radius: 18px 18px 0 0;
    box-shadow: 0 -8px 30px rgba(0,0,0,.18); overflow: hidden; gap: 10px;
    transform: translateY(0); transition: transform .28s ease; }
  .panel.is-collapsed { transform: translateY(calc(var(--sheet-h) - var(--sheet-peek))); }

  .sheet-handle { display: flex; justify-content: center; align-items: center; padding: 10px 0 6px; cursor: pointer; flex: none; }
  .sheet-handle .grip { width: 42px; height: 5px; border-radius: 3px; background: var(--border); }

  .sheet-summary { display: none; align-items: center; gap: 10px; flex: none; padding-bottom: 6px; }
  .panel.is-collapsed .sheet-summary { display: flex; }
  .sheet-summary-text { flex: 1; min-width: 0; font-weight: 600; font-size: .95rem;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .sheet-modify { flex: none; padding: .4rem .7rem; }

  .panel.is-collapsed .sheet-content { visibility: hidden; }
  .sheet-content { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 14px; padding-top: 2px; }
  .action-bar { background: linear-gradient(to top, var(--surface) 75%, transparent); }
}