* { box-sizing: border-box; }

:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1e222b;
  --border: #2a2f3a;
  --text: #e6e8ee;
  --muted: #8a93a6;
  --accent: #5b9cff;
  --accent-hover: #7badff;
  --danger: #ef5350;
  --success: #4caf50;
  --radius: 6px;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

/* -------- Login -------- */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card {
  width: 360px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.login-card h1 { margin: 0 0 4px; font-size: 22px; }
.login-card .subtitle { margin: 0 0 24px; color: var(--muted); font-size: 13px; }
.login-card label { display: block; margin-bottom: 16px; }
.login-card label span { display: block; margin-bottom: 6px; font-size: 12px; color: var(--muted); }
.login-card input {
  width: 100%; padding: 10px 12px; background: var(--panel-2); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius); font-size: 14px;
}
.login-card input:focus { outline: none; border-color: var(--accent); }
.login-card button {
  width: 100%; padding: 10px; background: var(--accent); color: #fff;
  border: 0; border-radius: var(--radius); font-size: 14px; font-weight: 500; cursor: pointer;
}
.login-card button:hover { background: var(--accent-hover); }
.error { color: var(--danger); font-size: 13px; margin-top: 12px; }

/* -------- App -------- */
.app-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 24px; border-bottom: 1px solid var(--border); background: var(--panel);
}
.brand { display: flex; align-items: baseline; gap: 12px; }
.brand strong { font-size: 16px; }
.muted { color: var(--muted); font-size: 12px; }

.actions { display: flex; gap: 8px; }
button {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  padding: 7px 14px; border-radius: var(--radius); cursor: pointer; font-size: 13px;
}
button:hover { background: #252a35; border-color: #3a3f4a; }
button.ghost { background: transparent; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover { background: var(--accent-hover); }
button.danger { color: var(--danger); }
button.danger:hover { background: rgba(239, 83, 80, 0.1); border-color: var(--danger); }

.tips[hidden] { display: none; }
.tips {
  display: flex; align-items: flex-start; gap: 16px;
  margin: 12px 24px 0; padding: 14px 18px;
  background: linear-gradient(90deg, rgba(91, 156, 255, 0.08), rgba(91, 156, 255, 0.02));
  border: 1px solid rgba(91, 156, 255, 0.25);
  border-radius: var(--radius);
  font-size: 13px; line-height: 1.55;
}
.tips-body { flex: 1; }
.tips strong { color: var(--accent); margin-right: 4px; }
.tips code {
  background: rgba(91, 156, 255, 0.12); padding: 1px 5px; border-radius: 3px;
  font-size: 12px; color: var(--text);
}
.tips em { color: var(--text); font-style: normal; font-weight: 500; }
.tips button { flex-shrink: 0; font-size: 12px; }

.location[hidden] { display: none; }
.location {
  padding: 8px 24px; border-bottom: 1px solid var(--border);
  font-size: 12px; display: flex; align-items: center; gap: 8px;
}
.location-url {
  color: var(--accent); cursor: pointer; font-family: "SF Mono", Menlo, monospace;
  padding: 2px 6px; border-radius: 3px; transition: background 0.15s;
  user-select: all;
}
.location-url:hover { background: rgba(91, 156, 255, 0.12); }

.breadcrumbs {
  padding: 10px 24px;
  font-size: 13px; color: var(--muted);
}
.breadcrumbs a { color: var(--accent); text-decoration: none; cursor: pointer; }
.breadcrumbs a:hover { text-decoration: underline; }
.breadcrumbs .sep { margin: 0 6px; color: var(--border); }

.file-area {
  padding: 16px 24px 24px;
  position: relative;
  min-height: calc(100vh - 110px);
  border: 2px dashed transparent;
  border-radius: 8px;
  margin: 8px 16px;
  transition: border-color 0.15s, background 0.15s;
}
.file-area.dragging {
  border-color: var(--accent);
  background: rgba(91, 156, 255, 0.04);
}
.drop-hint {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  padding: 10px 20px;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  pointer-events: none;
  z-index: 10;
}

.file-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.file-table th {
  text-align: left; padding: 10px 12px; font-size: 11px; text-transform: uppercase;
  color: var(--muted); font-weight: 500; border-bottom: 1px solid var(--border);
}
.col-size { width: 120px; }
.col-modified { width: 180px; }
.col-actions { width: 180px; text-align: right; }

.file-table tr.row { border-bottom: 1px solid var(--border); }
.file-table tr.row:hover { background: var(--panel); }
.file-table td { padding: 10px 12px; vertical-align: middle; }

.name-cell { display: flex; align-items: center; gap: 10px; }
.icon { width: 18px; height: 18px; flex-shrink: 0; color: var(--muted); }
.icon.folder { color: #f5b041; }
.name-cell .link { color: var(--text); cursor: pointer; text-decoration: none; }
.name-cell .link:hover { color: var(--accent); }

.row-actions { display: flex; gap: 4px; justify-content: flex-end; }
.row-actions button {
  padding: 4px 10px; font-size: 12px; background: transparent; border: 1px solid transparent;
}
.row-actions button:hover { background: var(--panel-2); border-color: var(--border); }

.empty { text-align: center; color: var(--muted); padding: 48px 0; }

.toast {
  position: fixed; bottom: 24px; right: 24px;
  padding: 12px 16px; border-radius: var(--radius);
  background: var(--panel); border: 1px solid var(--border);
  font-size: 13px; min-width: 240px; max-width: 400px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}
.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--danger); color: var(--danger); }

.progress-bar {
  height: 3px; background: var(--border); border-radius: 2px; overflow: hidden; margin-top: 8px;
}
.progress-bar .bar { height: 100%; background: var(--accent); transition: width 0.2s; }