* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface-hover: #232736;
  --border: #2a2e3d;
  --text: #e4e6f0;
  --text-dim: #8b8fa3;
  --accent: #6c63ff;
  --accent-hover: #5a52e0;
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #f87171;
}

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

.hidden {
  display: none !important;
}

.app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Login Screen */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 3rem 2.5rem;
  width: 100%;
  max-width: 380px;
  text-align: center;
}

.login-card h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.25rem;
}

.login-subtitle {
  color: var(--text-dim);
  font-size: 0.875rem;
  margin-bottom: 2rem;
}

.login-card form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.login-card input {
  padding: 0.75rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.95rem;
}

.login-card input:focus {
  outline: none;
  border-color: var(--accent);
}

.login-card button {
  padding: 0.75rem;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 0.5rem;
  transition: background 0.15s;
}

.login-card button:hover {
  background: var(--accent-hover);
}

.login-error {
  color: var(--danger);
  font-size: 0.85rem;
  min-height: 1.2em;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.header-left {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.version {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.current-user {
  font-size: 0.8rem;
  font-weight: 600;
}

.logout-btn {
  padding: 0.35rem 0.75rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-dim);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s;
}

.logout-btn:hover {
  background: rgba(248, 113, 113, 0.1);
  border-color: var(--danger);
  color: var(--danger);
}

nav {
  display: flex;
  gap: 0.5rem;
}

.nav-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.875rem;
  transition: all 0.15s;
}

.nav-btn:hover {
  background: var(--surface-hover);
  color: var(--text);
}

.nav-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

main {
  max-width: 960px;
  margin: 2rem auto;
  padding: 0 2rem;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

/* Upload Zone */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 4rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--accent);
  background: rgba(108, 99, 255, 0.05);
}

.upload-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.upload-zone h2 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.upload-zone p {
  color: var(--text-dim);
  font-size: 0.875rem;
}

.upload-hint {
  margin-top: 0.5rem;
  font-size: 0.75rem !important;
}

.upload-results {
  margin-top: 1.5rem;
}

.upload-result-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 0.5rem;
}

.result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.result-filename {
  font-weight: 600;
}

.result-badges {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.badge-type {
  background: rgba(52, 211, 153, 0.15);
  color: var(--success);
}

.confidence-badge {
  font-size: 0.7rem;
  color: var(--text-dim);
  padding: 0.1rem 0.4rem;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.result-summary {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.4;
}

.result-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.tag {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.25);
  border-radius: 12px;
  font-size: 0.7rem;
  color: var(--text-dim);
}

.result-folder {
  font-size: 0.8rem;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.folder-icon {
  font-size: 0.9rem;
}

.upload-spinner {
  color: var(--accent);
  font-size: 0.85rem;
}

.upload-result-item.success {
  border-left: 3px solid var(--success);
}

.upload-result-item.error {
  border-left: 3px solid var(--danger);
}

.upload-result-item.duplicate {
  border-left: 3px solid var(--warning);
}

/* Document List */
.toolbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.toolbar select {
  padding: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.875rem;
}

.doc-count {
  color: var(--text-dim);
  font-size: 0.875rem;
}

.document-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.doc-card {
  padding: 1rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
}

.doc-card:hover {
  background: var(--surface-hover);
  border-color: var(--accent);
}

.doc-card-title {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.doc-card-meta {
  font-size: 0.8rem;
  color: var(--text-dim);
  display: flex;
  gap: 1rem;
}

.doc-card-summary {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 0.5rem;
  line-height: 1.4;
}

.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-legal {
  background: rgba(108, 99, 255, 0.15);
  color: var(--accent);
}

.badge-lighting {
  background: rgba(251, 191, 36, 0.15);
  color: var(--warning);
}

/* Search */
.search-bar {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.search-bar input {
  flex: 1;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
}

.search-bar input:focus {
  outline: none;
  border-color: var(--accent);
}

.search-bar button {
  padding: 0.75rem 1.5rem;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

.search-bar button:hover {
  background: var(--accent-hover);
}

/* Folder Approval (upload result cards) */
.folder-approval {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.folder-suggestion {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
}

.folder-path-text {
  color: var(--text);
  font-family: 'SF Mono', 'Menlo', monospace;
  font-size: 0.75rem;
}

.folder-actions {
  display: flex;
  gap: 0.5rem;
}

.btn-approve {
  padding: 0.25rem 0.75rem;
  background: rgba(52, 211, 153, 0.15);
  border: 1px solid rgba(52, 211, 153, 0.3);
  border-radius: 6px;
  color: var(--success);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-approve:hover {
  background: rgba(52, 211, 153, 0.25);
}

.btn-edit-folder {
  padding: 0.25rem 0.75rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-dim);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-edit-folder:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.folder-edit-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.folder-edit-input {
  flex: 1;
  padding: 0.35rem 0.6rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: 'SF Mono', 'Menlo', monospace;
  font-size: 0.75rem;
}

.folder-edit-input:focus {
  outline: none;
  border-color: var(--accent);
}

.btn-save-folder {
  padding: 0.25rem 0.75rem;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
}

.btn-cancel-folder {
  padding: 0.25rem 0.75rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-dim);
  font-size: 0.75rem;
  cursor: pointer;
}

.folder-approved {
  font-size: 0.75rem;
  color: var(--success);
  font-weight: 600;
}

.doc-card-folder {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.35rem;
  font-family: 'SF Mono', 'Menlo', monospace;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

/* Folders View */
.folders-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 1.5rem;
  min-height: 400px;
}

.folder-tree-panel,
.folder-contents-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
}

.panel-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.folder-tree {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.tree-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.5rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: background 0.1s;
}

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

.tree-item.active {
  background: rgba(108, 99, 255, 0.15);
  color: var(--accent);
}

.tree-icon {
  font-size: 0.9rem;
  flex-shrink: 0;
}

.tree-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tree-count {
  font-size: 0.7rem;
  color: var(--text-dim);
  background: var(--bg);
  padding: 0.1rem 0.4rem;
  border-radius: 8px;
  flex-shrink: 0;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 3rem;
  color: var(--text-dim);
}

/* ── Confidential Banner ── */
.confidential-banner {
  background: #2D3436;
  color: #f39c12;
  text-align: center;
  padding: 0.35rem 1rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ── Footer ── */
.footer {
  text-align: center;
  padding: 1.5rem;
  font-size: 0.75rem;
  color: #aaa;
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: auto;
}
.footer-mascot { position: absolute; bottom: 4px; height: 40px; width: auto; border-radius: 4px; opacity: 0.85; }
.footer-mascot:hover { opacity: 1; }
.footer-mascot-left { left: 12px; }
.footer-mascot-right { right: 12px; }