:root {
  --bg: #0b0d12;
  --surface: #14171f;
  --surface-2: #1c202b;
  --border: #262b38;
  --text: #e8eaf0;
  --text-dim: #8b90a0;
  --accent: #6d5efc;
  --accent-hover: #7f72ff;
  --danger: #ff5470;
  --success: #2fd67d;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  background: radial-gradient(circle at top, #171b26, var(--bg) 60%);
  color: var(--text);
  min-height: 100vh;
}

.wrap { max-width: 1080px; margin: 0 auto; padding: 32px 20px 80px; }
.wrap.wide { max-width: 1280px; }

.layout { display: flex; gap: 28px; align-items: flex-start; }
.main { flex: 1; min-width: 0; }

.sidebar {
  width: 220px; flex-shrink: 0;
  display: flex; flex-direction: column; gap: 10px;
}
.sidebar-title {
  font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--text-dim); padding: 0 4px;
}
.folder-list { display: flex; flex-direction: column; gap: 2px; }
.folder-item {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  background: transparent; border: 1px solid transparent; border-radius: 8px;
  padding: 8px 10px; text-align: left; color: var(--text-dim); font-size: 14px;
  width: 100%;
}
.folder-item:hover { background: var(--surface-2); color: var(--text); }
.folder-item.active { background: var(--surface-2); border-color: var(--border); color: var(--text); }
.folder-item .count { font-size: 12px; color: var(--text-dim); }
.folder-item .folder-actions { display: none; gap: 4px; }
.folder-item:hover .folder-actions { display: flex; }
.folder-item .folder-actions button {
  padding: 2px 6px; font-size: 11px; border: none; background: transparent; color: var(--text-dim);
}
.folder-item .folder-actions button:hover { color: var(--text); background: #2a3040; }
.folder-new { font-size: 13px; padding: 7px 10px; text-align: left; }

@media (max-width: 720px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; }
  .folder-list { flex-direction: row; flex-wrap: wrap; }
}

header.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand .logo {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #37c2ff);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.brand h1 { font-size: 18px; margin: 0; font-weight: 600; }
.brand span.sub { color: var(--text-dim); font-size: 12px; }

button {
  font: inherit;
  cursor: pointer;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  padding: 9px 14px;
  transition: background 0.15s, border-color 0.15s, transform 0.05s;
}
button:hover { background: #232838; border-color: #333a4a; }
button:active { transform: scale(0.98); }
button.primary { background: var(--accent); border-color: var(--accent); color: white; }
button.primary:hover { background: var(--accent-hover); }
button.ghost { background: transparent; }
button.danger:hover { background: rgba(255, 84, 112, 0.12); border-color: var(--danger); color: var(--danger); }
button:disabled { opacity: 0.5; cursor: default; }

.dropzone {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 36px;
  text-align: center;
  color: var(--text-dim);
  margin-bottom: 28px;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone.drag { border-color: var(--accent); background: rgba(109, 94, 252, 0.08); color: var(--text); }
.dropzone strong { color: var(--text); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 18px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.thumb {
  aspect-ratio: 4 / 3;
  background: repeating-conic-gradient(#1a1e28 0% 25%, #171a22 0% 50%) 50% / 16px 16px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.thumb img { width: 100%; height: 100%; object-fit: cover; }

.card-body { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 8px; }
.card-name {
  font-weight: 600; font-size: 14px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  background: transparent; border: none; padding: 0; width: 100%; text-align: left;
}
.card-name:hover { background: transparent; }
.card-meta { font-size: 12px; color: var(--text-dim); }

.link-row {
  display: flex; align-items: center; gap: 6px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 8px;
}
.link-row input {
  flex: 1; background: transparent; border: none; color: var(--text-dim);
  font-size: 12px; font-family: ui-monospace, monospace; min-width: 0;
}
.link-row input:focus { outline: none; }
.link-row button { padding: 4px 8px; font-size: 12px; }

.card-actions { display: flex; gap: 8px; margin-top: 2px; }
.card-actions button { flex: 1; font-size: 13px; padding: 7px 10px; }

.folder-select {
  width: 100%; font: inherit; font-size: 12px; color: var(--text-dim);
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px;
  padding: 6px 8px;
}

.empty {
  text-align: center; color: var(--text-dim); padding: 60px 20px;
}

.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--surface-2); border: 1px solid var(--border);
  padding: 10px 18px; border-radius: 8px; font-size: 13px;
  opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(-4px); }
.toast.success { border-color: var(--success); color: var(--success); }
.toast.error { border-color: var(--danger); color: var(--danger); }

.login-wrap {
  max-width: 340px; margin: 15vh auto; text-align: center;
}
.login-wrap .logo { margin: 0 auto 16px; width: 48px; height: 48px; font-size: 24px; }
.login-wrap form { display: flex; flex-direction: column; gap: 10px; margin-top: 20px; }
.login-wrap input {
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: 10px 12px; font: inherit;
}
.login-wrap .error { color: var(--danger); font-size: 13px; min-height: 18px; }

[hidden] { display: none !important; }