@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* === DESIGN TOKENS === */
:root {
  --bg-primary: #212121;
  --bg-sidebar: #171717;
  --bg-card: #2f2f2f;
  --bg-input: #2f2f2f;
  --bg-hover: rgba(255,255,255,0.05);
  --bg-user-msg: #2f2f2f;

  --border: rgba(255,255,255,0.08);
  --border-focus: rgba(124,58,237,0.6);

  --accent: #7c3aed;
  --accent-light: #a78bfa;
  --accent-hover: #6d28d9;
  --accent-gradient: linear-gradient(135deg, #7c3aed, #5d5fef);

  --text-primary: #ececec;
  --text-secondary: #9d9d9d;
  --text-muted: #6b6b6b;

  --success: #22c55e;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
  --processing: #8b5cf6;

  --sidebar-w: 260px;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --transition: 0.2s ease;

  --font: 'Inter', -apple-system, sans-serif;
}

/* === RESET & BASE === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-light); text-decoration: none; }
a:hover { color: var(--text-primary); }
button { font-family: var(--font); cursor: pointer; border: none; outline: none; }
input, textarea, select { font-family: var(--font); outline: none; }
svg { display: block; flex-shrink: 0; }

/* === SCROLLBAR === */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* === APP LAYOUT === */
.app { display: flex; height: 100vh; width: 100vw; overflow: hidden; }

/* === SIDEBAR === */
.sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  transition: width var(--transition);
}

.sidebar-header {
  padding: 16px 12px 12px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px;
  margin-bottom: 10px;
}

.sidebar-logo .logo-icon {
  width: 32px; height: 32px;
  background: var(--accent-gradient);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

.sidebar-logo span {
  font-weight: 700;
  font-size: 15px;
  color: var(--text-primary);
  white-space: nowrap;
}

.btn-new-chat {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 9px 12px;
  background: var(--bg-hover);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.btn-new-chat:hover {
  background: rgba(124,58,237,0.15);
  border-color: var(--border-focus);
  color: var(--accent-light);
}

.sidebar-nav {
  padding: 8px 8px 0;
}

.nav-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 8px 8px 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  transition: all var(--transition);
  cursor: pointer;
  text-decoration: none;
  margin-bottom: 2px;
  position: relative;
}

.nav-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.nav-item.active {
  background: rgba(124,58,237,0.15);
  color: var(--accent-light);
}
.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 20%; bottom: 20%;
  width: 3px;
  background: var(--accent);
  border-radius: 0 4px 4px 0;
}

.sidebar-conversations {
  flex: 1;
  overflow-y: auto;
  padding: 4px 8px;
}

/* === SIDEBAR USER FOOTER === */
.sidebar-user-footer {
  padding: 12px 8px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: rgba(0, 0, 0, 0.15);
}

.user-profile-info {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
}

.user-avatar {
  width: 32px;
  height: 32px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 13px;
  border: 1.5px solid rgba(255,255,255,0.1);
  text-transform: uppercase;
}

.user-meta {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  line-height: 1.25;
}

.user-display-name {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role-badge {
  font-size: 10px;
  font-weight: 500;
  color: var(--accent-light);
  display: inline-block;
  margin-top: 2px;
}

.btn-logout {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.15);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  font-family: var(--font);
}

.btn-logout:hover {
  background: rgba(239, 68, 68, 0.25);
  border-color: rgba(239, 68, 68, 0.4);
  color: #ff8080;
}


.conv-group-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 12px 8px 4px;
}

.conv-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition);
  margin-bottom: 1px;
}

.conv-item:hover { background: var(--bg-hover); }
.conv-item.active { background: rgba(255,255,255,0.06); }

.conv-item-title {
  flex: 1;
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
}

.conv-item.active .conv-item-title { color: var(--text-primary); }

.conv-item-delete {
  opacity: 0;
  background: none;
  color: var(--text-muted);
  padding: 2px;
  border-radius: 4px;
  transition: all var(--transition);
}
.conv-item:hover .conv-item-delete { opacity: 1; }
.conv-item-delete:hover { color: var(--error); background: rgba(239,68,68,0.1); }

/* === MAIN CONTENT === */
.main { flex: 1; display: flex; flex-direction: column; height: 100vh; overflow: hidden; }

/* === CHAT PAGE === */
.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  background: var(--bg-primary);
}

.chat-header-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.chat-header-model {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.model-badge {
  background: rgba(124,58,237,0.15);
  color: var(--accent-light);
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid rgba(124,58,237,0.3);
}

.messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 24px 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.messages-inner {
  max-width: 740px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
}

.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 60px 20px;
  text-align: center;
}

.empty-state .empty-icon {
  width: 56px; height: 56px;
  background: var(--accent-gradient);
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 4px;
}

.empty-state h2 { font-size: 22px; font-weight: 700; color: var(--text-primary); }
.empty-state p { font-size: 14px; color: var(--text-secondary); max-width: 360px; line-height: 1.6; }

.suggestion-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 8px;
}

.chip {
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 99px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}
.chip:hover {
  background: rgba(124,58,237,0.1);
  border-color: rgba(124,58,237,0.4);
  color: var(--accent-light);
}

/* === MESSAGES === */
.message { display: flex; gap: 14px; padding: 12px 0; }
.message.user { flex-direction: row-reverse; }

.message-avatar {
  width: 32px; height: 32px;
  border-radius: 8px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  font-weight: 700;
}

.message.user .message-avatar {
  background: var(--accent-gradient);
  color: white;
}

.message.ai .message-avatar {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.message-content { flex: 1; max-width: 80%; display: flex; flex-direction: column; gap: 8px; }
.message.user .message-content { align-items: flex-end; }

.message-bubble {
  padding: 12px 16px;
  border-radius: var(--radius);
  line-height: 1.65;
  word-break: break-word;
  font-size: 14px;
}

.message.user .message-bubble {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-bottom-right-radius: 4px;
}

.message.ai .message-bubble {
  background: transparent;
  color: var(--text-primary);
  padding: 8px 0;
}

.message-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.message.user .message-meta { justify-content: flex-end; }

.confidence-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 99px;
}
.confidence-high { background: rgba(34,197,94,0.15); color: #4ade80; border: 1px solid rgba(34,197,94,0.3); }
.confidence-medium { background: rgba(245,158,11,0.15); color: #fbbf24; border: 1px solid rgba(245,158,11,0.3); }
.confidence-low { background: rgba(239,68,68,0.15); color: #f87171; border: 1px solid rgba(239,68,68,0.3); }

.sources-toggle {
  font-size: 11px;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  background: none;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid transparent;
  transition: all var(--transition);
}
.sources-toggle:hover { color: var(--accent-light); border-color: rgba(124,58,237,0.3); }

.sources-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 4px;
}

.source-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  background: rgba(124,58,237,0.08);
  border: 1px solid rgba(124,58,237,0.2);
  border-radius: 8px;
  font-size: 11px;
  color: var(--accent-light);
  cursor: default;
}

/* Typing indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 0;
}
.typing-indicator span {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: bounce 1.4s infinite ease-in-out;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-8px); }
}

/* === INPUT AREA === */
.input-area {
  border-top: 1px solid var(--border);
  padding: 16px 24px 20px;
  flex-shrink: 0;
  background: var(--bg-primary);
}

.input-wrapper {
  max-width: 740px;
  margin: 0 auto;
  position: relative;
}

.input-box {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px 52px 14px 18px;
  color: var(--text-primary);
  font-size: 14px;
  resize: none;
  min-height: 52px;
  max-height: 200px;
  overflow-y: auto;
  transition: border-color var(--transition);
  line-height: 1.5;
}

.input-box:focus { border-color: var(--border-focus); }
.input-box::placeholder { color: var(--text-muted); }

.send-btn {
  position: absolute;
  right: 10px;
  bottom: 10px;
  width: 34px; height: 34px;
  background: var(--accent);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: white;
  transition: all var(--transition);
}
.send-btn:hover { background: var(--accent-hover); transform: scale(1.05); }
.send-btn:disabled { background: var(--bg-hover); color: var(--text-muted); transform: none; cursor: not-allowed; }

.input-hint { text-align: center; font-size: 11px; color: var(--text-muted); margin-top: 8px; }

/* === PAGE HEADER (Documents & Settings) === */
.page-wrapper { flex: 1; display: flex; flex-direction: column; height: 100vh; overflow: hidden; }
.page-header {
  padding: 20px 32px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.page-title { font-size: 20px; font-weight: 700; }
.page-subtitle { font-size: 13px; color: var(--text-secondary); margin-top: 2px; }

.page-content {
  flex: 1;
  overflow-y: auto;
  padding: 28px 32px;
}

/* === DOCUMENTS PAGE === */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  background: rgba(255,255,255,0.01);
  margin-bottom: 28px;
}
.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--accent);
  background: rgba(124,58,237,0.05);
}
.upload-zone .upload-icon { color: var(--text-muted); margin: 0 auto 12px; }
.upload-zone .upload-title { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; }
.upload-zone .upload-sub { font-size: 13px; color: var(--text-secondary); }
.upload-zone .upload-types { font-size: 11px; color: var(--text-muted); margin-top: 8px; }

.upload-progress {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.upload-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.upload-item-name { flex: 1; font-size: 13px; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.upload-item-status { font-size: 12px; font-weight: 500; white-space: nowrap; }
.upload-item-status.uploading { color: var(--info); }
.upload-item-status.indexing { color: var(--processing); }
.upload-item-status.indexed { color: var(--success); }
.upload-item-status.failed { color: var(--error); }

.spinner {
  width: 16px; height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* === TABLE === */
.table-wrapper {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
}

.table-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.table-title { font-size: 15px; font-weight: 600; }
.table-count { font-size: 12px; color: var(--text-muted); background: var(--bg-hover); padding: 2px 8px; border-radius: 99px; }

table { width: 100%; border-collapse: collapse; }
thead th {
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 10px 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.01);
}
tbody td { padding: 13px 20px; border-bottom: 1px solid var(--border); font-size: 13px; vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--bg-hover); }

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
}
.status-indexed { background: rgba(34,197,94,0.12); color: #4ade80; border: 1px solid rgba(34,197,94,0.2); }
.status-uploaded { background: rgba(156,163,175,0.12); color: #9ca3af; border: 1px solid rgba(156,163,175,0.2); }
.status-processing { background: rgba(139,92,246,0.12); color: #a78bfa; border: 1px solid rgba(139,92,246,0.2); }
.status-failed { background: rgba(239,68,68,0.12); color: #f87171; border: 1px solid rgba(239,68,68,0.2); }
.status-deleted { background: rgba(107,114,128,0.12); color: #6b7280; border: 1px solid rgba(107,114,128,0.2); text-decoration: line-through; }

.type-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  font-family: monospace;
  background: rgba(255,255,255,0.06);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.action-btns { display: flex; gap: 6px; align-items: center; }

.btn-icon {
  width: 30px; height: 30px;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  background: none;
  color: var(--text-muted);
  border: 1px solid transparent;
  transition: all var(--transition);
}
.btn-icon:hover { background: var(--bg-hover); border-color: var(--border); color: var(--text-primary); }
.btn-icon.danger:hover { background: rgba(239,68,68,0.1); border-color: rgba(239,68,68,0.3); color: var(--error); }

/* === SETTINGS PAGE === */
.settings-grid { display: flex; flex-direction: column; gap: 20px; max-width: 720px; }

.settings-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
}

.settings-card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.settings-card-icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: rgba(124,58,237,0.15);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent-light);
}

.settings-card-title { font-size: 15px; font-weight: 600; }
.settings-card-sub { font-size: 12px; color: var(--text-secondary); margin-top: 1px; }
.settings-card-body { padding: 20px; display: flex; flex-direction: column; gap: 16px; }

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: 12px; font-weight: 600; color: var(--text-secondary); }
.form-desc { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

.form-input {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 13px;
  transition: border-color var(--transition);
}
.form-input:focus { border-color: var(--border-focus); }
.form-input::placeholder { color: var(--text-muted); }

.form-input-group {
  display: flex;
  gap: 8px;
}
.form-input-group .form-input { flex: 1; }

select.form-input { cursor: pointer; }
select.form-input option { background: var(--bg-card); }

.range-wrapper { display: flex; align-items: center; gap: 12px; }
input[type="range"] {
  flex: 1;
  -webkit-appearance: none;
  height: 4px;
  background: var(--border);
  border-radius: 99px;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
}
.range-value {
  width: 48px;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-light);
  background: rgba(124,58,237,0.1);
  padding: 4px 6px;
  border-radius: 6px;
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: white;
  border: 1px solid transparent;
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }

.btn-secondary {
  background: var(--bg-hover);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: rgba(255,255,255,0.08); }

.btn-ghost {
  background: none;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--text-primary); }

.btn-danger {
  background: rgba(239,68,68,0.12);
  color: var(--error);
  border: 1px solid rgba(239,68,68,0.25);
}
.btn-danger:hover { background: rgba(239,68,68,0.2); }

.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

.btn-sm { padding: 6px 12px; font-size: 12px; }

/* === API KEY DISPLAY === */
.apikey-display {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.apikey-value {
  flex: 1;
  font-family: 'Courier New', monospace;
  font-size: 13px;
  color: var(--accent-light);
  word-break: break-all;
}

/* === TOAST NOTIFICATIONS === */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 9999;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  min-width: 260px;
  max-width: 380px;
  animation: slideIn 0.3s ease;
  font-size: 13px;
  color: var(--text-primary);
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--error); }
.toast.info { border-left: 3px solid var(--info); }
.toast.warning { border-left: 3px solid var(--warning); }
.toast.fade-out { animation: fadeOut 0.3s ease forwards; }

@keyframes fadeOut { to { opacity: 0; transform: translateY(8px); } }

/* === MODAL === */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
  animation: fadeInOverlay 0.2s ease;
}
@keyframes fadeInOverlay { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  max-width: 440px;
  width: 90%;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  animation: scaleIn 0.2s ease;
}
@keyframes scaleIn { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }

.modal-title { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.modal-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 24px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* === EMPTY TABLE STATE === */
.empty-table {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
}
.empty-table svg { margin: 0 auto 12px; opacity: 0.4; }
.empty-table p { font-size: 14px; }

/* === UTILITY === */
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.ml-auto { margin-left: auto; }
.text-sm { font-size: 12px; }
.text-muted { color: var(--text-muted); }
.font-mono { font-family: 'Courier New', monospace; }
.w-full { width: 100%; }
.truncate { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* === SIDEBAR USER FOOTER === */
.sidebar-user-footer {
  margin-top: auto;
  padding: 12px 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: rgba(0, 0, 0, 0.2);
  flex-shrink: 0;
}

.user-profile-info {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 4px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 12px;
  border: 1px solid rgba(255,255,255,0.1);
  text-transform: uppercase;
}

.user-meta {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  line-height: 1.3;
}

.user-display-name {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role-badge {
  font-size: 10px;
  font-weight: 500;
  color: var(--accent-light);
  display: inline-block;
  margin-top: 2px;
}

.btn-logout {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 600;
  color: #cbd5e1;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  font-family: var(--font);
  outline: none;
}

.btn-logout:hover {
  background: rgba(239, 68, 68, 0.3);
  border-color: rgba(239, 68, 68, 0.5);
  color: #ff9999;
}

/* === SETTINGS TABS === */
.settings-tab-nav {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  width: fit-content;
  margin-bottom: 24px;
}
.settings-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  border-radius: 7px;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  outline: none;
  white-space: nowrap;
  font-family: var(--font);
  letter-spacing: 0;
  line-height: 1;
}
.settings-tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}
.settings-tab-btn.active {
  color: #fff;
  background: rgba(139, 92, 246, 0.25);
  border: 1px solid rgba(139, 92, 246, 0.4);
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(139, 92, 246, 0.2);
}
.settings-tab-content {
  flex-direction: column;
  gap: 16px;
  animation: tabFadeIn 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes tabFadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
}

/* === FOLDER MANAGEMENT UI === */
.folder-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  transition: all 0.15s ease;
  color: var(--text-secondary);
}

.breadcrumb-item:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

.breadcrumb-item.active {
  color: var(--text-primary);
  font-weight: 600;
  cursor: default;
}

.breadcrumb-item.active:hover {
  background: transparent;
}

.breadcrumb-separator {
  color: var(--text-muted);
  font-size: 12px;
}

.folder-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.folder-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.folder-card:hover {
  border-color: rgba(139, 92, 246, 0.5);
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.folder-info {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow: hidden;
}

.folder-icon {
  color: #a78bfa;
  flex-shrink: 0;
}

.folder-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.folder-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.folder-card:hover .folder-actions {
  opacity: 1;
}

.btn-icon-danger {
  padding: 4px;
  border-radius: 4px;
  color: var(--text-muted);
  background: transparent;
}

.btn-icon-danger:hover {
  color: var(--error);
  background: rgba(239, 68, 68, 0.15);
}

/* === COMPACT MODERN SOURCES PANEL === */
.sources-panel {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.sources-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.sources-list {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.source-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.25);
  border-radius: 6px;
  font-size: 11px;
  color: var(--text-secondary);
  transition: all 0.15s ease;
  max-width: 280px;
  cursor: default;
}

.source-chip:hover {
  background: rgba(139, 92, 246, 0.2);
  border-color: rgba(139, 92, 246, 0.4);
  color: #fff;
}

.source-chip-title {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 200px;
  font-weight: 500;
}

.source-chip-page {
  font-size: 10px;
  opacity: 0.75;
  background: rgba(255, 255, 255, 0.08);
  padding: 1px 4px;
  border-radius: 3px;
}

/* ===== TOGGLE SWITCH ===== */
.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.switch .slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: #334155;
  border-radius: 24px;
  transition: background-color 0.3s ease;
}

.switch .slider::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 3px;
  top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.3s ease;
  box-shadow: 0 1px 4px rgba(0,0,0,0.35);
}

.switch input:checked + .slider {
  background-color: #22c55e;
}

.switch input:checked + .slider::after {
  transform: translateX(20px);
}

/* ===== MOBILE RESPONSIVE DESIGN (ALL MOBILE & TABLET SCREENS) ===== */
@media (max-width: 768px) {
  .app {
    flex-direction: column;
  }

  .sidebar {
    width: 100% !important;
    height: auto !important;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 12px 16px;
  }

  .sidebar-nav {
    display: flex;
    flex-direction: row;
    overflow-x: auto;
    gap: 6px;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }

  .nav-label {
    display: none;
  }

  .nav-item {
    padding: 8px 12px;
    white-space: nowrap;
    font-size: 13px;
  }

  .page-wrapper {
    height: auto;
    min-height: 100vh;
    padding: 0;
  }

  .page-header {
    padding: 16px 18px 12px;
  }

  .page-title {
    font-size: 20px;
  }

  .page-subtitle {
    font-size: 12px;
  }

  .settings-tab-nav {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: 6px;
    gap: 6px;
  }

  .settings-tab-btn {
    padding: 8px 12px;
    font-size: 12px;
    flex-shrink: 0;
  }

  .settings-grid {
    grid-template-columns: 1fr !important;
  }

  .settings-card {
    grid-column: span 1 !important;
    border-radius: 12px;
  }

  .settings-card-body {
    padding: 14px;
  }

  /* Table Mobile Scroll */
  div[style*="overflow-x:auto"] {
    -webkit-overflow-scrolling: touch;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.08);
  }

  table {
    min-width: 650px;
  }

  /* Touch Toggle Switch */
  .switch {
    width: 48px;
    height: 26px;
  }

  .switch .slider::after {
    width: 20px;
    height: 20px;
  }

  .switch input:checked + .slider::after {
    transform: translateX(22px);
  }
}