/* ============================================
   Design Tokens
   ============================================ */
:root {
  /* Primary palette - water-system purple */
  --color-primary: #704cf6;
  --color-primary-hover: #5f3fe4;
  --color-primary-light: #eee7ff;
  --color-primary-bg: #f8f5ff;

  /* Accent */
  --color-accent: #8b6cf6;
  --color-accent-hover: #7658e8;

  /* Semantic */
  --color-success: #10b981;
  --color-success-light: #ecfdf5;
  --color-warning: #f59e0b;
  --color-warning-light: #fffbeb;
  --color-error: #ef4444;
  --color-error-light: #fef2f2;

  /* Neutrals */
  --color-bg: #f1f5f9;
  --color-surface: #ffffff;
  --color-surface-hover: #f8fafc;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;

  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.04);
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.06), 0 1px 2px -1px rgb(0 0 0 / 0.04);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.06), 0 2px 4px -2px rgb(0 0 0 / 0.04);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.06), 0 4px 6px -4px rgb(0 0 0 / 0.04);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.08), 0 8px 10px -6px rgb(0 0 0 / 0.04);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition: 0.2s ease;
  --transition-slow: 0.35s ease;

  /* Typography */
  --font-sans: "Inter", "Microsoft YaHei", "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Code", "Fira Code", "Consolas", "Courier New", monospace;

  /* Layout */
  --sidebar-width: 280px;
}

/* ============================================
   Reset & Base
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html,
body {
  height: 100%;
}

h1, h2, h3, h4 {
  line-height: 1.3;
  color: var(--color-text);
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

/* ============================================
   Login
   ============================================ */
.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--color-bg);
}

.login-panel {
  width: min(420px, 100%);
  display: grid;
  gap: 18px;
  padding: 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.login-panel h1 {
  margin: 0;
  font-size: 22px;
}

.login-panel p {
  margin: 0;
  color: var(--color-text-secondary);
}

.login-panel label {
  display: grid;
  gap: 6px;
  color: var(--color-text-secondary);
  font-size: 13px;
  font-weight: 700;
}

.login-panel input {
  width: 100%;
  padding: 11px 12px;
  font-family: var(--font-sans);
  font-size: 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  outline: none;
}

.login-panel input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
  background: var(--color-surface);
}

.login-panel button {
  padding: 11px 16px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: var(--color-primary);
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.login-panel button:hover {
  background: var(--color-primary-hover);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInScale {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 80%, 100% { opacity: 0.3; transform: scale(0.75); }
  40% { opacity: 1; transform: scale(1); }
}

@keyframes shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

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

/* ============================================
   Layout — Main Chat Shell
   ============================================ */
.shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
}

/* ============================================
   Sidebar
   ============================================ */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-height: 0;
  padding: 24px 20px;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
}

.sidebar h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--color-primary-light);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar h1::before {
  content: "";
  display: inline-block;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  flex-shrink: 0;
}

.sidebar label {
  display: grid;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.sidebar input {
  width: 100%;
  padding: 10px 12px;
  font-family: var(--font-sans);
  font-size: 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.sidebar input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.sidebar input::placeholder {
  color: var(--color-text-muted);
}

.capability-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 12px;
  flex: 1 1 180px;
  min-height: 128px;
  overflow: hidden;
}

.panel-toggle {
  display: none;
  flex: 0 0 auto;
  padding: 5px 8px;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-bg);
  border: 1px solid var(--color-primary-light);
  border-radius: var(--radius-full);
  cursor: pointer;
}

.capability-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.capability-head h2 {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-secondary);
}

.capability-head span {
  flex-shrink: 0;
  color: var(--color-text-muted);
  font-size: 12px;
}

.capability-list {
  display: grid;
  gap: 8px;
  min-height: 0;
  overflow-y: auto;
  padding-right: 2px;
}

.capability-item {
  display: grid;
  gap: 4px;
  width: 100%;
  padding: 10px 12px;
  font-family: var(--font-sans);
  text-align: left;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.capability-item:hover {
  background: var(--color-surface);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-xs);
}

.capability-item strong {
  font-size: 13px;
  font-weight: 700;
}

.capability-item span {
  color: var(--color-text-secondary);
  font-size: 12px;
}

.capability-item small,
.capability-empty {
  color: var(--color-text-muted);
  font-size: 12px;
  line-height: 1.5;
}

/* Status */
.status {
  margin-top: auto;
  padding: 10px 12px;
  font-size: 12px;
  color: var(--color-text-muted);
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  text-align: center;
  transition: color var(--transition), background var(--transition);
}

.status:empty::before {
  content: "准备就绪";
}

/* ============================================
   Chat Area
   ============================================ */
.chat {
  display: grid;
  grid-template-rows: 1fr auto;
  min-height: 0;
  min-width: 0;
  background: var(--color-bg);
  overflow: hidden;
}

.beta-notice {
  width: min(860px, calc(100% - 48px));
  margin: 18px auto 0;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #92400e;
  background: var(--color-warning-light);
  border: 1px solid #fde68a;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-xs);
}

.beta-notice strong {
  flex: 0 0 auto;
  font-size: 13px;
  line-height: 1.4;
}

.beta-notice span {
  min-width: 0;
  font-size: 13px;
  line-height: 1.5;
  color: #78350f;
}

.messages {
  min-height: 0;
  overflow-y: auto;
  padding: 24px 24px 8px;
  scroll-behavior: smooth;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* ============================================
   Message Bubbles
   ============================================ */
.message {
  max-width: 860px;
  width: 100%;
  margin: 0 auto;
  padding: 16px 20px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--color-border-light);
  white-space: pre-wrap;
  word-break: break-word;
  animation: fadeIn var(--transition-slow) ease forwards;
  position: relative;
  line-height: 1.7;
}

.message.user {
  background: var(--color-primary-light);
  border-color: #d8ccff;
  box-shadow: none;
}

.message::before {
  content: "";
  position: absolute;
  top: 16px;
  left: -36px;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.message.assistant::before {
  content: "AI";
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
}

.message.user::before {
  content: "U";
  background: linear-gradient(135deg, #64748b, #475569);
}

/* Meta info */
.meta {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 12px;
  white-space: normal;
  line-height: 1.5;
}

/* Feedback */
.feedback-box {
  margin-top: 14px;
  white-space: normal;
}

.feedback-toggle {
  padding: 5px 12px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.feedback-toggle:hover {
  background: var(--color-surface);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.feedback-form {
  display: grid;
  grid-template-columns: 140px 1fr 80px;
  gap: 8px;
  align-items: start;
  margin-top: 10px;
  padding: 12px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
}

.feedback-form.hidden {
  display: none;
}

.feedback-form select,
.feedback-form textarea {
  padding: 8px 10px;
  font-family: var(--font-sans);
  font-size: 13px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-fast);
}

.feedback-form select:focus,
.feedback-form textarea:focus {
  border-color: var(--color-primary);
}

.feedback-form textarea {
  min-height: 64px;
  resize: vertical;
}

.feedback-form button {
  padding: 8px 10px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: var(--color-primary);
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.feedback-form button:hover {
  background: var(--color-primary-hover);
}

.feedback-form button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.feedback-status {
  grid-column: 1 / -1;
  color: var(--color-text-muted);
  font-size: 12px;
}

/* Video cards */
.video-list {
  display: grid;
  gap: 12px;
  margin-top: 14px;
  white-space: normal;
}

.video-card {
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}

.video-title {
  font-weight: 700;
  font-size: 14px;
}

.video-desc {
  color: var(--color-text-secondary);
  font-size: 13px;
}

.video-card video {
  width: 100%;
  max-height: 400px;
  border-radius: var(--radius-sm);
  background: #000;
}

/* Typing indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 14px 20px;
  max-width: 860px;
  width: 100%;
  margin: 0 auto;
}

.typing-indicator span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-text-muted);
  animation: pulse 1.4s infinite ease-in-out both;
}

.typing-indicator span:nth-child(1) { animation-delay: 0s; }
.typing-indicator span:nth-child(2) { animation-delay: 0.16s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.32s; }

/* ============================================
   Composer / Input Area
   ============================================ */
.composer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: end;
  padding: 16px 24px 20px;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.composer .example-prompts {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.composer .example-prompts span {
  color: var(--color-text-muted);
  font-size: 12px;
  font-weight: 700;
}

.composer .example-prompts button {
  padding: 7px 10px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: none;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.composer .example-prompts button:hover {
  color: var(--color-primary);
  background: var(--color-surface);
  border-color: var(--color-primary);
  box-shadow: none;
  transform: none;
}

.composer textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  outline: none;
  resize: none;
  max-height: 140px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.composer textarea:focus {
  background: var(--color-surface);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-light);
}

.composer textarea::placeholder {
  color: var(--color-text-muted);
}

.composer button {
  padding: 12px 24px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--color-primary), #9b7cff);
  border: 0;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  box-shadow: 0 2px 8px rgb(112 76 246 / 0.3);
}

.composer button:hover {
  box-shadow: 0 4px 14px rgb(112 76 246 / 0.4);
  transform: translateY(-1px);
}

.composer button:active {
  transform: translateY(0) scale(0.98);
}

/* ============================================
   Admin Shell
   ============================================ */
.admin-shell {
  max-width: 1320px;
  margin: 0 auto;
  padding: 28px 24px;
}

.admin-locked {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at top left, rgb(112 76 246 / 0.14), transparent 34%),
    linear-gradient(135deg, #f8fafc 0%, #eef2ff 100%);
}

.admin-locked .admin-shell {
  width: min(100%, 460px);
  padding: 24px;
}

.admin-locked .admin-header {
  flex-direction: column;
  gap: 18px;
  margin-bottom: 16px;
  padding: 28px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  background: rgb(255 255 255 / 0.94);
  box-shadow: var(--shadow-xl);
}

.admin-locked .admin-status {
  margin: 0;
  text-align: center;
  background: rgb(255 255 255 / 0.88);
}

.admin-unlocked .admin-login-title {
  display: none;
}

/* Admin Header */
.admin-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--color-border);
}

.admin-header h1 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
}

.admin-header p {
  margin: 4px 0 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

.admin-login {
  display: flex;
  gap: 8px;
  align-items: center;
}

.admin-login input {
  width: 200px;
  padding: 9px 14px;
  font-family: var(--font-sans);
  font-size: 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.admin-login input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.admin-login button {
  padding: 9px 18px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--color-primary);
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
  white-space: nowrap;
}

.admin-login button:hover {
  background: var(--color-primary-hover);
}

.admin-action {
  padding: 9px 18px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--color-accent);
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast), opacity var(--transition-fast);
  white-space: nowrap;
}

.admin-action:hover {
  background: var(--color-accent-hover);
}

.admin-action:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

/* Admin Status Banner */
.admin-status {
  margin-bottom: 20px;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text-secondary);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.admin-status.ok {
  background: var(--color-success-light);
  color: #065f46;
  border-color: #a7f3d0;
}

.admin-status.error {
  background: var(--color-error-light);
  color: #991b1b;
  border-color: #fecaca;
}

/* ============================================
   Metric Cards
   ============================================ */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition), transform var(--transition);
}

.metric:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.metric span {
  color: var(--color-text-muted);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.metric strong {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

/* ============================================
   Admin Tabs
   ============================================ */
.admin-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  padding: 4px;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  overflow-x: auto;
}

.admin-tabs .tab {
  padding: 9px 18px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: transparent;
  border: 0;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.admin-tabs .tab:hover {
  color: var(--color-text);
  background: var(--color-surface);
}

.admin-tabs .tab.active {
  background: var(--color-surface);
  color: var(--color-primary);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

/* ============================================
   Admin Panels
   ============================================ */
.admin-panel {
  display: none;
  animation: fadeIn var(--transition-slow) ease;
}

.admin-panel.active {
  display: block;
}

/* ============================================
   Filter Bar
   ============================================ */
.filter-bar {
  display: grid;
  grid-template-columns: 1.4fr 1.2fr 1fr 120px auto;
  gap: 10px;
  margin-bottom: 16px;
  padding: 14px 16px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--color-border-light);
  align-items: center;
}

.filter-bar input,
.filter-bar select {
  padding: 9px 12px;
  font-family: var(--font-sans);
  font-size: 13px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.filter-bar input:focus,
.filter-bar select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
  background: var(--color-surface);
}

.filter-bar button {
  padding: 9px 16px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: var(--color-primary);
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
  white-space: nowrap;
}

.filter-bar button:hover {
  background: var(--color-primary-hover);
}

/* ============================================
   Audit Cards
   ============================================ */
.admin-list {
  display: grid;
  gap: 10px;
}

.audit-card {
  padding: 16px 18px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition-fast);
  animation: fadeIn var(--transition-slow) ease;
}

.audit-card:hover {
  box-shadow: var(--shadow-sm);
}

.audit-card.error {
  border-left: 4px solid var(--color-error);
  background: var(--color-error-light);
}

.audit-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  justify-content: space-between;
  margin-bottom: 8px;
}

.audit-head strong {
  font-size: 14px;
  color: var(--color-text);
}

.audit-head span {
  font-size: 12px;
  color: var(--color-text-muted);
}

.audit-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-bottom: 10px;
  font-size: 12px;
  color: var(--color-text-muted);
}

.audit-question {
  color: var(--color-text) !important;
  font-weight: 600 !important;
  font-size: 14px !important;
  margin-bottom: 6px;
}

.audit-card p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* Status badges */
.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.status-badge.success {
  background: var(--color-success-light);
  color: #065f46;
}

.status-badge.error {
  background: var(--color-error-light);
  color: #991b1b;
}

.status-badge.pending {
  background: var(--color-warning-light);
  color: #92400e;
}

/* Status select dropdown */
.status-select {
  padding: 4px 8px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  outline: none;
}

.status-select:focus {
  border-color: var(--color-primary);
}

/* Feedback detail blocks */
.feedback-detail {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

.feedback-detail span {
  display: inline-block;
  margin-bottom: 4px;
  color: var(--color-text-muted);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.feedback-detail p {
  margin: 0;
  white-space: pre-wrap;
}

/* ============================================
   Video Manager
   ============================================ */
.video-manager-form,
.video-manager-card {
  padding: 18px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-xs);
}

.video-manager-form {
  display: grid;
  gap: 16px;
  margin-bottom: 16px;
}

.video-form-head,
.video-card-head,
.video-card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.video-form-head h2 {
  margin: 0;
  font-size: 18px;
}

.video-form-head p,
.video-card-actions span,
.video-card-head span {
  margin: 4px 0 0;
  color: var(--color-text-muted);
  font-size: 12px;
}

.video-form-grid,
.video-edit-form {
  display: grid;
  gap: 12px;
}

.video-form-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.video-form-grid .wide {
  grid-column: 1 / -1;
}

.video-manager-form label,
.video-edit-form label {
  display: grid;
  gap: 6px;
}

.video-manager-form label span,
.video-edit-form label span {
  color: var(--color-text-secondary);
  font-size: 12px;
  font-weight: 700;
}

.video-manager-form input,
.video-manager-form textarea,
.video-edit-form input,
.video-edit-form textarea {
  width: 100%;
  padding: 9px 12px;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  outline: none;
}

.video-manager-form input:focus,
.video-manager-form textarea:focus,
.video-edit-form input:focus,
.video-edit-form textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
  background: var(--color-surface);
}

.video-manager-form button,
.video-edit-form button {
  padding: 9px 16px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  background: var(--color-primary);
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.video-edit-form button.danger {
  background: var(--color-error);
}

.video-manager-list {
  display: grid;
  gap: 14px;
}

.video-manager-card {
  display: grid;
  grid-template-columns: minmax(260px, 380px) 1fr;
  gap: 16px;
  align-items: start;
}

.video-manager-preview video,
.video-missing {
  width: 100%;
  min-height: 210px;
  border-radius: var(--radius-md);
  background: #020617;
}

.video-missing {
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 700;
}

/* ============================================
   Admin Columns (Users Panel)
   ============================================ */
.admin-columns {
  display: grid;
  grid-template-columns: minmax(280px, 360px) 1fr;
  gap: 16px;
  align-items: start;
}

.user-row {
  display: grid;
  gap: 4px;
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  text-align: left;
  font-family: var(--font-sans);
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-xs);
}

.user-row:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--color-primary);
  transform: translateX(2px);
}

.user-row strong {
  font-size: 14px;
  font-weight: 600;
}

.user-row span,
.user-row small {
  color: var(--color-text-muted);
  font-size: 12px;
}

.history-pane {
  min-height: 360px;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--color-border-light);
}

.history-pane h2 {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 700;
}

.history-pane h3 {
  margin: 20px 0 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.history-message {
  margin-bottom: 8px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: var(--color-bg);
  white-space: pre-wrap;
  font-size: 13px;
  line-height: 1.6;
}

.history-message.user {
  background: var(--color-primary-light);
  border: 1px solid #d8ccff;
}

.history-message strong {
  display: block;
  margin-bottom: 4px;
  font-size: 11px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.history-message p {
  margin: 0;
  color: var(--color-text);
}

/* ============================================
   Empty States
   ============================================ */
.empty {
  padding: 32px 20px;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text-muted);
  background: var(--color-surface);
  text-align: center;
  font-size: 14px;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 900px) {
  .metric-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .filter-bar {
    grid-template-columns: 1fr 1fr;
  }

  .admin-header {
    flex-direction: column;
  }

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

  .video-manager-card,
  .video-form-grid {
    grid-template-columns: 1fr;
  }

  .video-form-head,
  .video-card-actions {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (max-width: 760px) {
  .shell {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(0, 1fr);
    height: 100vh;
    height: 100dvh;
  }

  .sidebar {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
    padding: calc(10px + env(safe-area-inset-top)) 12px 10px;
    min-height: 0;
    overflow: visible;
  }

  .sidebar h1 {
    font-size: 15px;
    padding-bottom: 8px;
  }

  .sidebar h1::before {
    width: 28px;
    height: 28px;
  }

  .capability-panel {
    gap: 8px;
  }

  .panel-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 28px;
    white-space: nowrap;
  }

  .collapsible-panel.is-collapsed .conversation-list,
  .collapsible-panel.is-collapsed .capability-list {
    display: none;
  }

  .capability-list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    overflow-y: visible;
    padding: 0 2px 4px 0;
    scroll-snap-type: x proximity;
  }

  .capability-item,
  .capability-empty {
    min-width: min(260px, 82vw);
    scroll-snap-align: start;
  }

  .capability-item {
    min-height: 88px;
    align-content: start;
    padding: 10px 12px;
  }

  .capability-item small {
    display: none;
  }

  .status {
    display: none;
  }

  .chat {
    min-height: 0;
  }

  .composer {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
    align-items: end;
  }

  .composer button {
    width: auto;
    min-width: 64px;
    min-height: 46px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
  }

  .composer textarea {
    min-height: 46px;
    max-height: 108px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
  }

  .messages {
    min-height: 0;
    padding: 12px 10px 4px;
  }

  .beta-notice {
    width: calc(100% - 24px);
    margin-top: 10px;
    padding: 9px 12px;
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .message {
    border-radius: var(--radius-md);
    padding: 12px 14px;
    line-height: 1.65;
  }

  .message::before {
    display: none;
  }

  .feedback-form {
    grid-template-columns: 1fr;
  }

  .typing-indicator {
    padding: 12px 14px;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 14px;
  }

  .sidebar {
    padding-left: 10px;
    padding-right: 10px;
  }

  .sidebar h1 {
    font-size: 14px;
  }

  .capability-head h2,
  .conversation-head h2 {
    font-size: 12px;
  }

  .capability-item strong {
    font-size: 12px;
  }

  .capability-item span {
    font-size: 11px;
    line-height: 1.45;
  }

  .beta-notice {
    width: calc(100% - 20px);
    max-height: 86px;
    overflow: auto;
  }

  .beta-notice strong,
  .beta-notice span {
    font-size: 12px;
  }

  .composer {
    grid-template-columns: minmax(0, 1fr) auto;
    padding-left: 10px;
    padding-right: 10px;
  }

  .composer button {
    min-width: 58px;
    padding-left: 12px;
    padding-right: 12px;
  }

  .ai-disclaimer {
    display: none;
  }

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

  .filter-bar {
    grid-template-columns: 1fr;
  }

  .admin-tabs {
    flex-wrap: wrap;
  }

  .admin-login {
    flex-direction: column;
    width: 100%;
  }

  .admin-login input {
    width: 100%;
  }
}

/* ============================================
   Custom Scrollbar
   ============================================ */
.messages::-webkit-scrollbar {
  width: 6px;
}

.messages::-webkit-scrollbar-track {
  background: transparent;
}

.messages::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.messages::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* Firefox */
.messages {
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}