:root {
  --bg: #ffffff;
  --panel: #f6f6f9;
  --fg: #1b1b1f;
  --muted: #6b6b76;
  --border: #e1e1e8;
  --accent: #6965db;
  --accent-soft: #e3e2fe;
  --danger: #c92a2a;
  --ok: #2b8a3e;
  --warn: #e67700;
  --topbar-h: 44px;
  --drawer-w: 300px;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #121212;
  --panel: #1e1e22;
  --fg: #e4e4ea;
  --muted: #9a9aa6;
  --border: #33333a;
  --accent: #a8a5ff;
  --accent-soft: #2e2d4d;
  --danger: #ff6b6b;
  --ok: #69db7c;
  --warn: #ffa94d;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body,
#root {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--fg);
  font: 14px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

button,
.actions a {
  font: inherit;
  color: inherit;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 10px;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}
button:hover:not(:disabled),
.actions a:hover {
  border-color: var(--accent);
}
button:disabled {
  opacity: 0.5;
  cursor: default;
}
.icon-btn {
  border: none;
  background: transparent;
  padding: 4px 8px;
  font-size: 16px;
}
.muted {
  color: var(--muted);
}
.danger {
  color: var(--danger);
}
.error {
  margin: 6px 0;
  padding: 6px 10px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--danger) 15%, transparent);
  color: var(--danger);
  cursor: pointer;
}

/* --- Mise en page ----------------------------------------------------------- */

.app {
  display: grid;
  grid-template-rows: var(--topbar-h) 1fr;
  grid-template-columns: 0 1fr;
  height: 100dvh;
  transition: grid-template-columns 0.15s ease;
}
.app.drawer-open {
  grid-template-columns: var(--drawer-w) 1fr;
}

.topbar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 8px;
  padding-left: max(8px, env(safe-area-inset-left));
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  min-width: 0;
}
.topbar .title {
  flex: 1;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.status {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 10px;
  background: var(--bg);
}
.status.saved {
  color: var(--ok);
}
.status.dirty,
.status.saving {
  color: var(--warn);
}
.status.error {
  color: var(--danger);
}

.drawer {
  grid-area: 2 / 1;
  overflow: hidden;
  border-right: 1px solid var(--border);
  background: var(--panel);
  min-width: 0;
}
.backdrop {
  display: none;
}

.canvas {
  grid-area: 2 / 2;
  position: relative;
  min-width: 0;
  min-height: 0;
}
.canvas > .error {
  position: absolute;
  z-index: 10;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
}
.placeholder {
  height: 100%;
  display: grid;
  place-items: center;
  padding: 16px;
  text-align: center;
}

/* --- Explorateur ------------------------------------------------------------ */

.explorer {
  width: var(--drawer-w);
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 8px;
  gap: 6px;
}
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.search {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
}
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-size: 13px;
}
.crumbs button {
  border: 1px dashed transparent;
  background: transparent;
  padding: 2px 4px;
}
.entries {
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  flex: 1;
}
.entries .empty {
  padding: 12px 8px;
}
.row {
  display: flex;
  align-items: center;
  gap: 4px;
  border-radius: 6px;
  border: 1px dashed transparent;
}
.row:hover {
  background: var(--bg);
}
li.active > .row {
  background: var(--accent-soft);
}
.row.drop,
.crumbs button.drop {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.row .name {
  flex: 1;
  display: flex;
  gap: 8px;
  align-items: center;
  min-width: 0;
  text-align: left;
  border: none;
  background: transparent;
  padding: 7px 6px;
}
.row .label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.row .meta {
  font-size: 11px;
  white-space: nowrap;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
  padding: 4px 6px 8px 30px;
  font-size: 13px;
}

/* --- Mobile : l'explorateur devient un tiroir superposé -------------------- */

@media (max-width: 768px) {
  .app,
  .app.drawer-open {
    grid-template-columns: 0 1fr;
  }
  .drawer {
    position: fixed;
    z-index: 20;
    top: var(--topbar-h);
    bottom: 0;
    left: 0;
    width: min(var(--drawer-w), 88vw);
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    box-shadow: 2px 0 12px rgb(0 0 0 / 0.2);
  }
  .explorer {
    width: 100%;
    padding-bottom: max(8px, env(safe-area-inset-bottom));
  }
  .drawer-open .drawer {
    transform: none;
  }
  .drawer-open .backdrop {
    display: block;
    position: fixed;
    z-index: 15;
    inset: var(--topbar-h) 0 0 0;
    background: rgb(0 0 0 / 0.35);
  }
  .row .meta,
  .topbar .status {
    display: none;
  }
  .row .name {
    padding: 10px 6px; /* cibles tactiles plus grandes */
  }
}