:root {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color-scheme: light dark;
  --bg: #111418;
  --panel: #1a1f26;
  --panel-2: #202731;
  --text: #eef2f7;
  --muted: #a8b2c1;
  --border: #33404f;
  --accent: #74b9ff;
  --danger: #ff7675;
  --success: #55efc4;
  --warning: #ffeaa7;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); }
button, input { font: inherit; }
code { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }

.app-shell { width: min(1100px, calc(100% - 32px)); margin: 32px auto; }
.app-header, .panel-heading, .actions, .signed-in, .pending-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.app-header { margin-bottom: 20px; }
h1, h2 { margin: 0; }
.app-header p { margin: 6px 0 0; color: var(--muted); }

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 20px; margin: 16px 0; }
.grid { display: grid; gap: 14px; margin-top: 14px; }
.grid.two { grid-template-columns: repeat(2, minmax(0,1fr)); }
label > span { display: block; margin-bottom: 7px; font-weight: 650; }
input[type="text"], input[type="password"] { width: 100%; border: 1px solid var(--border); border-radius: 9px; background: var(--panel-2); color: var(--text); padding: 10px 12px; }
small, .muted { color: var(--muted); }
.compact { margin-bottom: 0; }
.checkbox-row { display: flex; align-items: center; gap: 10px; padding-top: 31px; }
.checkbox-row span { margin: 0; font-weight: 500; }

.auth-actions { margin-top: 16px; }
.auth-actions > div { display: flex; flex-wrap: wrap; gap: 8px; }
.signed-in { margin-top: 14px; padding: 12px 14px; border-radius: 10px; background: var(--panel-2); }
.badge { display: inline-block; margin-left: 8px; padding: 3px 8px; border-radius: 999px; font-size: .82rem; font-weight: 700; }
.badge.verified { color: #04120d; background: var(--success); }
.badge.pending { color: #211b00; background: var(--warning); }

.pending-users { display: grid; gap: 10px; margin-top: 14px; }
.pending-row { padding: 12px; border: 1px solid var(--border); border-radius: 10px; background: var(--panel-2); }
.pending-row > div { display: grid; gap: 4px; }

.drop-zone { display: grid; place-items: center; min-height: 150px; margin-top: 18px; padding: 24px; text-align: center; border: 2px dashed var(--border); border-radius: 12px; cursor: pointer; background: var(--panel-2); }
.drop-zone.dragging { border-color: var(--accent); }
.drop-zone input { margin-top: 14px; max-width: 100%; }
.selected-files { margin-top: 10px; color: var(--muted); }

.button { border: 1px solid var(--border); border-radius: 9px; padding: 9px 14px; cursor: pointer; }
.button.primary { background: var(--accent); color: #06111d; border-color: transparent; font-weight: 700; }
.button.secondary { background: var(--panel-2); color: var(--text); }
.button:disabled { opacity: .55; cursor: not-allowed; }
.status.success { color: var(--success); }
.status.error { color: var(--danger); }

.file-tree ul { list-style: none; margin: 0; padding-left: 20px; }
.file-tree > ul { padding-left: 0; }
.tree-row { display: flex; align-items: center; gap: 8px; min-height: 30px; border-radius: 7px; padding: 3px 6px; }
.tree-row:hover { background: var(--panel-2); }
.folder-toggle { width: 24px; border: 0; background: transparent; color: var(--text); cursor: pointer; padding: 0; }
.tree-name { overflow-wrap: anywhere; }
.tree-file { color: #dfe8f4; }
.tree-folder { font-weight: 650; cursor: pointer; }
.tree-folder:hover { color: var(--accent); }
.tree-children[hidden] { display: none; }
.empty { color: var(--muted); padding: 18px 4px; }

@media (max-width: 700px) {
  .grid.two { grid-template-columns: 1fr; }
  .app-header, .signed-in, .pending-row { align-items: flex-start; }
  .app-header, .signed-in, .pending-row, .actions { flex-direction: column; }
  .checkbox-row { padding-top: 0; }
}