:root {
  --bg: #f6f4f1;
  --bg-alt: #f0ede8;
  --panel: #ffffff;
  --ink: #1f1f1f;
  --muted: #5a5a5a;
  --accent: #0f6b5c;
  --accent-2: #c94f3d;
  --border: #ddd7cf;
  --shadow: 0 16px 40px rgba(17, 17, 17, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top left, #fff 0%, #f1ede7 40%, #eee8e0 70%),
    linear-gradient(120deg, #f7f4f0 0%, #f0ebe3 100%);
  min-height: 100vh;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 24px 40px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 18px;
}

.brand {
  font-family: "Source Serif 4", serif;
  font-size: 32px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.subtitle {
  color: var(--muted);
  font-size: 14px;
  margin-top: 6px;
}

.status {
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
}

.searchbar {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: 16px;
  align-items: center;
  margin-bottom: 22px;
}

.search-input {
  display: flex;
  gap: 8px;
  background: var(--panel);
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.search-input input {
  border: none;
  outline: none;
  flex: 1;
  font-size: 15px;
  background: transparent;
}

.search-input button {
  border: none;
  background: var(--accent);
  color: white;
  padding: 8px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
}

.search-scope label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
}

.search-scope select {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  font-size: 14px;
}

.layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 20px;
}

.panel {
  background: var(--panel);
  border-radius: 16px;
  padding: 16px 16px 18px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  min-height: 480px;
}

.panel-title {
  font-weight: 600;
  margin-bottom: 10px;
  font-size: 15px;
}

.tree {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.tree ul {
  list-style: none;
  padding-left: 18px;
  margin: 6px 0 0;
  border-left: 1px dashed var(--border);
}

.tree-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.tree-item:hover {
  background: var(--bg-alt);
}

.tree-item.active {
  background: rgba(15, 107, 92, 0.12);
  border: 1px solid rgba(15, 107, 92, 0.25);
}

.tree-toggle {
  width: 18px;
  height: 18px;
  border-radius: 6px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

.tree-label {
  font-size: 14px;
}

.tree-count {
  margin-left: auto;
  font-size: 11px;
  color: var(--muted);
}

.tree-collapsed > ul {
  display: none;
}

.files-meta {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 10px;
}

.file-list {
  display: grid;
  gap: 10px;
}

.file-card {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-alt);
}

.file-name {
  font-size: 14px;
}

.file-actions {
  display: flex;
  gap: 8px;
}

.file-actions a {
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}

.file-actions a.view {
  background: var(--accent);
  color: #fff;
}

.file-actions a.download {
  background: #fff;
  color: var(--accent-2);
  border: 1px solid var(--accent-2);
}

.empty {
  padding: 32px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--border);
  border-radius: 12px;
}

.footer {
  margin-top: 24px;
  font-size: 12px;
  color: var(--muted);
}

@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.file-card {
  animation: rise 0.3s ease;
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .searchbar {
    grid-template-columns: 1fr;
  }
}