/* ══════════════════════════════════════════════════════════════════
   Legal Q&A — Main Stylesheet
   Colors are defined in theme-light.css / theme-dark.css via
   [data-theme] custom properties. Do not hardcode color values here.
   ══════════════════════════════════════════════════════════════════ */

/* ── Non-theme Custom Properties ─────────────────────────────── */
:root {
  /* Typography — Inter with system fallback */
  --font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --font-size-2xs: 11px;
  --font-size-xs: 12px;
  --font-size-sm: 13px;
  --font-size-base: 15px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 30px;

  /* Spacing — more generous scale */
  --spacing-2xs: 2px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;

  /* Shape — softer, larger radii */
  --border-radius-xs: 4px;
  --border-radius-sm: 6px;
  --border-radius: 10px;
  --border-radius-lg: 14px;
  --border-radius-xl: 20px;
  --border-radius-full: 9999px;

  /* Layout */
  --sidebar-width: 280px;
  --reference-panel-width: 420px;
  --chat-input-max-height: 200px;
  --header-height: 56px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── Base Reset ──────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  height: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-background);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Scrollbar ───────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-scrollbar-thumb);
  border-radius: var(--border-radius-full);
  border: 2px solid transparent;
  background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-scrollbar-thumb-hover);
  border: 2px solid transparent;
  background-clip: padding-box;
}

/* ══════════════════════════════════════════════════════════════════
   LOGIN PAGE
   ══════════════════════════════════════════════════════════════════ */

.login-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  background: var(--gradient-surface);
  padding: var(--spacing-md);
  position: relative;
}
.login-page > .login-card {
  margin-top: auto;
  margin-bottom: auto;
}
.login-lang-selector {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
}
.login-lang-selector select {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-family: var(--font-family);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
}

.login-card {
  width: 100%;
  max-width: 400px;
  padding: var(--spacing-2xl) var(--spacing-xl);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-xl);
  animation: login-fade-in 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.login-logo {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
}

.login-card h1 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--spacing-xs);
  text-align: center;
  color: var(--color-text);
}

.login-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.login-section-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  text-align: center;
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
}

.login-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.login-link {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  text-decoration: none;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.login-link:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

.success-message {
  display: block;
  padding: 10px 12px;
  font-size: var(--font-size-sm);
  color: var(--color-success, #16a34a);
  background-color: var(--color-success-bg, #f0fdf4);
  border-left: 3px solid var(--color-success, #16a34a);
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--spacing-md);
}

.success-message.hidden {
  display: none;
}

/* Legacy alias */
.login-container {
  max-width: 400px;
  margin: 0 auto;
  padding: var(--spacing-xl);
  margin-top: 10vh;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-xl);
}

.login-container h1 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-lg);
  text-align: center;
  color: var(--color-text);
}

/* ── Form Styles ─────────────────────────────────────────────── */
.form-group {
  margin-bottom: var(--spacing-md);
}

label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="search"],
textarea,
select {
  width: 100%;
  padding: 10px 14px;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-input-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-border-focus);
  box-shadow: var(--focus-ring), var(--shadow-xs);
}

/* ══════════════════════════════════════════════════════════════════
   BUTTONS
   ══════════════════════════════════════════════════════════════════ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 10px var(--spacing-md);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  font-weight: 600;
  letter-spacing: -0.01em;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast), opacity var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
  text-decoration: none;
  line-height: 1.4;
}

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

.btn-primary {
  width: 100%;
  background: var(--gradient-primary);
  background-color: var(--color-primary);
  color: var(--color-primary-text);
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-primary-lg);
}

.btn-primary:active:not(:disabled) {
  background-color: var(--color-primary-active);
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn-primary:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring), var(--shadow-primary);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-surface-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.btn-secondary:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.btn-danger {
  background-color: var(--color-error);
  color: var(--color-text-inverse, #ffffff);
}

.btn-danger:hover:not(:disabled) {
  filter: brightness(1.1);
}

.btn-sm {
  padding: 6px var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.btn-icon {
  padding: var(--spacing-sm);
  width: 36px;
  height: 36px;
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-radius: var(--border-radius);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

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

.btn-icon:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* ── Error Message ───────────────────────────────────────────── */
.error-message {
  display: none;
  padding: 10px 12px;
  font-size: var(--font-size-sm);
  color: var(--color-error-text);
  background-color: var(--color-error-bg);
  border-left: 3px solid var(--color-error);
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--spacing-md);
}

.error-message.visible {
  display: block;
}

/* ══════════════════════════════════════════════════════════════════
   APP LAYOUT — Three-Column Layout
   ══════════════════════════════════════════════════════════════════ */

.app-layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ── Sidebar (Left Column) ───────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--gradient-surface);
  background-color: var(--color-sidebar-bg);
  box-shadow: 1px 0 0 var(--color-border);
  transition: transform var(--transition-smooth), width var(--transition-smooth);
  overflow: hidden;
  z-index: 20;
}

.sidebar.collapsed {
  width: 0;
  min-width: 0;
  transform: translateX(calc(-1 * var(--sidebar-width)));
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  height: var(--header-height);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.sidebar-header h2 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-sm);
  gap: 2px;
  flex-shrink: 0;
}

.sidebar-nav a,
.sidebar-nav button {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--border-radius);
  border: none;
  background: transparent;
  cursor: pointer;
  font-family: var(--font-family);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  width: 100%;
  text-align: left;
}

.sidebar-nav a:hover,
.sidebar-nav button:hover {
  background-color: var(--color-surface-hover);
  color: var(--color-text);
}

.sidebar-nav a.active,
.sidebar-nav button.active {
  background-color: var(--color-primary-subtle);
  color: var(--color-primary);
  font-weight: 600;
}

/* Close button — hidden on desktop, visible on mobile */
.sidebar-close-btn {
  display: none;
}

.new-conversation-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin: var(--spacing-sm);
  padding: 10px var(--spacing-md);
  width: calc(100% - 2 * var(--spacing-sm));
  flex-shrink: 0;
  font-size: var(--font-size-sm);
  font-weight: 600;
  font-family: var(--font-family);
  color: var(--color-primary-text);
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  box-shadow: var(--shadow-primary);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.new-conversation-btn:hover {
  box-shadow: var(--shadow-primary-lg);
  transform: translateY(-1px);
}

.new-conversation-btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.conversation-list {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-sm);
}

.conversation-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.conversation-item.active {
  background-color: var(--color-primary-subtle);
  color: var(--color-primary);
  font-weight: 600;
}

.conversation-item .conversation-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
}

.conversation-delete {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  padding: 0;
}

.sidebar-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
  gap: var(--spacing-sm);
}

/* ── Main Content (Center Column) ────────────────────────────── */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: 100vh;
  overflow: hidden;
}

/* ── Reference Panel (Right Column) ──────────────────────────── */
.reference-panel {
  width: var(--reference-panel-width);
  min-width: var(--reference-panel-width);
  height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-reference-bg);
  border-left: 1px solid var(--color-border);
  transform: translateX(var(--reference-panel-width));
  transition: transform var(--transition-normal);
  position: fixed;
  right: 0;
  top: 0;
  z-index: 30;
  box-shadow: var(--shadow-lg);
}

.reference-panel.open {
  transform: translateX(0);
}

.reference-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  height: var(--header-height);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.reference-header h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  margin-right: var(--spacing-sm);
}

.reference-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  color: var(--color-text);
}

.reference-highlight {
  background-color: var(--color-reference-highlight);
  padding: 2px 4px;
  border-radius: var(--border-radius-sm);
}

/* ══════════════════════════════════════════════════════════════════
   CHAT AREA
   ══════════════════════════════════════════════════════════════════ */

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  height: var(--header-height);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-surface);
  flex-shrink: 0;
}

.chat-header h2 {
  font-size: var(--font-size-base);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 0 1 auto;
}

#rename-btn {
  margin-right: auto;
  flex-shrink: 0;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

/* ── Messages ────────────────────────────────────────────────── */
.message {
  display: flex;
  flex-direction: column;
  max-width: 90%;
  width: 100%;
  margin: 0 auto;
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  position: relative;
  animation: slide-up 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.message-user {
  background-color: var(--color-msg-user-bg);
  color: var(--color-msg-user-text);
  align-self: flex-end;
  box-shadow: var(--shadow-xs);
  border-radius: var(--border-radius-lg) var(--border-radius-lg) var(--border-radius-xs) var(--border-radius-lg);
}

.message-assistant {
  background-color: var(--color-msg-assistant-bg);
  color: var(--color-msg-assistant-text);
  align-self: flex-start;
  box-shadow: var(--shadow-sm);
  border-radius: var(--border-radius-lg) var(--border-radius-lg) var(--border-radius-lg) var(--border-radius-xs);
}

.message-content {
  font-size: var(--font-size-base);
  line-height: 1.6;
  overflow-wrap: break-word;
  word-break: break-word;
}

/* Markdown content inside messages */
.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4 {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.message-content h1:first-child,
.message-content h2:first-child,
.message-content h3:first-child {
  margin-top: 0;
}

.message-content p {
  margin-bottom: var(--spacing-sm);
}

.message-content p:last-child {
  margin-bottom: 0;
}

.message-content ul,
.message-content ol {
  margin-bottom: var(--spacing-sm);
  padding-left: var(--spacing-lg);
}

.message-content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 2px 6px;
  background-color: var(--color-surface-hover);
  border-radius: var(--border-radius-sm);
}

.message-content pre {
  margin-bottom: var(--spacing-sm);
  padding: var(--spacing-md);
  background-color: var(--color-surface-hover);
  border-radius: var(--border-radius);
  overflow-x: auto;
}

.message-content pre code {
  padding: 0;
  background-color: transparent;
}

.message-content blockquote {
  margin-bottom: var(--spacing-sm);
  padding-left: var(--spacing-md);
  border-left: 3px solid var(--color-primary);
  color: var(--color-text-secondary);
}

.message-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-sm);
}

.message-content th,
.message-content td {
  padding: var(--spacing-sm);
  border: 1px solid var(--color-border);
  text-align: left;
}

.message-content th {
  background-color: var(--color-surface-hover);
  font-weight: 600;
}

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

.message-content a:hover {
  text-decoration: underline;
}

.message-actions {
  display: inline;
  margin-left: var(--spacing-xs);
  vertical-align: middle;
}

.message-actions .btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 2px;
  font-size: var(--font-size-sm);
  vertical-align: middle;
}

/* ── Message Copy / Export Actions ──────────────────────────────── */

.msg-actions {
  display: flex;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.message:hover .msg-actions {
  opacity: 1;
}

.btn-copy {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  padding: 2px 10px;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.btn-copy:hover {
  color: var(--color-text);
  border-color: var(--color-text-secondary);
}

.btn-copy.copied {
  color: var(--color-success, #22c55e);
  border-color: var(--color-success, #22c55e);
}

/* Debug trace button & drawer */
.btn-debug-trace {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  padding: 2px 10px;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.btn-debug-trace:hover {
  color: var(--color-text);
  border-color: var(--color-text-secondary);
}
.debug-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 50%;
  height: 100vh;
  background: var(--bg-primary, #fff);
  border-left: 1px solid var(--color-border);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  box-shadow: -2px 0 8px rgba(0, 0, 0, 0.15);
}
.debug-drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid var(--color-border);
  font-weight: 600;
}
.debug-drawer-content {
  flex: 1;
  overflow: auto;
  padding: 12px;
  margin: 0;
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: monospace;
  color: var(--color-text);
}

#export-btn {
  flex-shrink: 0;
}

/* ── Edit Mode ──────────────────────────────────────────────────── */
.edit-textarea {
  width: 100%;
  min-height: 60px;
  max-height: 200px;
  padding: 10px 12px;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-input-bg);
  border: 1px solid var(--color-border-focus);
  border-radius: var(--border-radius-sm);
  outline: none;
  resize: vertical;
  overflow-y: auto;
  line-height: 1.5;
}

.edit-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
  justify-content: flex-end;
}

/* ── Message Error ──────────────────────────────────────────────── */
.message-error {
  padding: var(--spacing-sm) var(--spacing-md);
  margin-top: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-error-text);
  background-color: var(--color-error-bg);
  border-radius: var(--border-radius-sm);
}

/* ── Reference Links (inside messages) ──────────────────────────── */
.message-references {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
}

.message-references-title {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-xs);
}

.reference-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 2px var(--spacing-sm);
  margin: 2px var(--spacing-xs) 2px 0;
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  background-color: var(--color-primary-subtle);
  border-radius: var(--border-radius-full);
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition-fast);
}

.reference-link:hover {
  background-color: var(--color-surface-hover);
  text-decoration: underline;
}

/* ══════════════════════════════════════════════════════════════════
   THINKING TRACE
   ══════════════════════════════════════════════════════════════════ */

.thinking-trace {
  border: 1px solid var(--color-thinking-border);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
}

.thinking-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-thinking-header-bg);
  color: var(--color-thinking-text);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  transition: background-color var(--transition-fast);
}

.thinking-header:hover {
  background-color: var(--color-surface-hover);
}

.thinking-header::before {
  content: "\25B6";
  font-size: var(--font-size-xs);
  transition: transform var(--transition-fast);
}

.thinking-trace.expanded .thinking-header::before {
  transform: rotate(90deg);
}

.thinking-content {
  max-height: 0;
  overflow: hidden;
  padding: 0 var(--spacing-md);
  background-color: var(--color-thinking-bg);
  font-size: var(--font-size-sm);
  color: var(--color-thinking-text);
  transition: max-height var(--transition-smooth), padding var(--transition-smooth);
}

.thinking-trace.expanded .thinking-content {
  max-height: 3000px;
  padding: var(--spacing-md);
}

.tool-call {
  margin-bottom: var(--spacing-sm);
  padding: var(--spacing-sm);
  border: 1px solid var(--color-tool-border);
  border-left: 2px solid var(--color-primary);
  border-radius: var(--border-radius-sm);
  background-color: var(--color-tool-bg);
}

.tool-call:last-child {
  margin-bottom: 0;
}

.tool-call-name {
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.tool-output {
  max-height: 300px;
  overflow-y: auto;
  padding: var(--spacing-sm);
  background-color: var(--color-tool-output-bg);
  border-radius: var(--border-radius-sm);
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  white-space: pre-wrap;
  word-break: break-all;
}

.tool-result-pending {
  font-style: italic;
  color: var(--color-text-muted);
}

.tool-result-error {
  color: var(--color-error-text);
}

.thinking-header.streaming::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-left: var(--spacing-sm);
  border-radius: 50%;
  background-color: var(--color-primary);
  animation: pulse-dot 1.2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

@keyframes modal-overlay-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes modal-slide-in {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* ══════════════════════════════════════════════════════════════════
   TOKEN COUNTER & CONTEXT BAR
   ══════════════════════════════════════════════════════════════════ */

.token-counter {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: var(--color-token-bg);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-2xs);
  color: var(--color-token-text);
  flex-shrink: 0;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.token-counter:hover {
  opacity: 1;
}

.token-stat {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.token-stat-label {
  color: var(--color-text-muted);
}

.token-stat-value {
  font-weight: 600;
  font-family: var(--font-mono);
}

.context-bar {
  flex: 1;
  height: 6px;
  background-color: var(--color-context-bar-bg);
  border-radius: var(--border-radius-full);
  overflow: hidden;
}

.context-bar-fill {
  height: 100%;
  border-radius: var(--border-radius-full);
  background-color: var(--color-context-bar-low);
  transition: width var(--transition-normal), background-color var(--transition-normal);
}

.context-bar-fill.mid {
  background-color: var(--color-context-bar-mid);
}

.context-bar-fill.high {
  background-color: var(--color-context-bar-high);
}

/* ══════════════════════════════════════════════════════════════════
   CHAT INPUT AREA
   ══════════════════════════════════════════════════════════════════ */

.chat-input-container {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-surface);
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.04);
  flex-shrink: 0;
}

.chat-input {
  width: 100%;
  min-height: 44px;
  max-height: var(--chat-input-max-height);
  padding: 12px 16px;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-surface-hover);
  border: 1px solid transparent;
  border-radius: var(--border-radius-lg);
  outline: none;
  resize: none;
  overflow-y: auto;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.chat-input:focus {
  border-color: var(--color-border-focus);
  background-color: var(--color-input-bg);
  box-shadow: var(--focus-ring);
}

.chat-input-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--spacing-sm);
}

.send-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary-text);
  background: var(--gradient-primary);
  background-color: var(--color-primary);
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  box-shadow: var(--shadow-primary);
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.send-btn:hover:not(:disabled) {
  background-color: var(--color-primary-hover);
  box-shadow: var(--shadow-primary-lg);
  transform: translateY(-1px);
}

.send-btn:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.stop-btn {
  display: none;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-inverse, #ffffff);
  background-color: var(--color-error);
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.stop-btn.visible {
  display: inline-flex;
}

.stop-btn:hover {
  opacity: 0.9;
}

/* ── Empty State ────────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  text-align: center;
  padding: var(--spacing-2xl);
  animation: empty-state-in 0.5s ease;
}

@keyframes empty-state-in {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.empty-state-icon {
  margin-bottom: var(--spacing-lg);
  opacity: 0.5;
}

.empty-state-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.empty-state-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  max-width: 320px;
}

/* ══════════════════════════════════════════════════════════════════
   COLLECTION SELECTOR
   ══════════════════════════════════════════════════════════════════ */

.collection-selector {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs);
  min-height: 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  background-color: var(--color-input-bg);
}

.collection-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 2px var(--spacing-sm);
  font-size: var(--font-size-xs);
  color: var(--color-chip-text);
  background-color: var(--color-chip-bg);
  border-radius: var(--border-radius-full);
  white-space: nowrap;
}

.collection-chip-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  font-size: 10px;
  border: none;
  background: transparent;
  color: var(--color-chip-text);
  cursor: pointer;
  border-radius: var(--border-radius-full);
  transition: background-color var(--transition-fast);
}

.collection-chip-remove:hover {
  background-color: var(--color-chip-hover);
}

.collection-add-btn {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--spacing-sm);
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  background: transparent;
  border: 1px dashed var(--color-primary);
  border-radius: var(--border-radius-full);
  cursor: pointer;
  white-space: nowrap;
  transition: background-color var(--transition-fast);
}

.collection-add-btn:hover {
  background-color: var(--color-chip-bg);
}

.collection-modal-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.collection-modal-item:hover {
  background-color: var(--color-surface-hover);
}

.collection-modal-item.selected {
  color: var(--color-primary);
  font-weight: 500;
}

/* ══════════════════════════════════════════════════════════════════
   COLLECTION MANAGEMENT VIEW
   ══════════════════════════════════════════════════════════════════ */

.collections-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md);
}

.collections-toolbar {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.collection-group-header {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: var(--spacing-sm) 0 var(--spacing-xs) 0;
  margin-top: var(--spacing-md);
}

.collection-group-header:first-child {
  margin-top: 0;
}

.collection-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  cursor: pointer;
  transition: all var(--transition-smooth);
  margin-bottom: var(--spacing-sm);
  background-color: var(--color-surface);
}

.collection-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border-focus);
  transform: translateY(-3px);
}

.collection-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
}

.collection-card-name {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.collection-card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.collection-card-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  padding-top: var(--spacing-xs);
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.collection-card-meta .meta-separator {
  opacity: 0.5;
}

.badge-public {
  background-color: var(--color-primary-subtle);
  color: var(--color-primary);
  padding: 2px var(--spacing-sm);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.badge-owner {
  background-color: var(--color-success-bg, #e6f4ea);
  color: var(--color-success-text, #1e7e34);
  padding: 2px var(--spacing-sm);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.badge-shared {
  background-color: var(--color-warning-bg, #fff8e1);
  color: var(--color-warning-text, #f57f17);
  padding: 2px var(--spacing-sm);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

/* Create collection inline form */
.create-collection-form {
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-surface);
  margin-bottom: var(--spacing-md);
}

.create-collection-form .form-group {
  margin-bottom: var(--spacing-sm);
}

.form-actions {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: flex-end;
  margin-top: var(--spacing-sm);
}

/* Document rows */
.doc-row {
  display: grid;
  grid-template-columns: minmax(80px, 0.7fr) minmax(100px, 3fr) auto auto;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-xs);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-xs);
  gap: var(--spacing-md);
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.doc-row:hover {
  background-color: var(--color-surface-hover);
  box-shadow: var(--shadow-sm);
  transform: translateX(2px);
}

.doc-filename,
.doc-description {
  min-width: 0;
  position: relative;
}

.doc-filename .doc-text,
.doc-description .doc-text {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.doc-filename {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
}

.doc-description {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.doc-tooltip {
  display: none;
  position: absolute;
  left: 0;
  top: 100%;
  z-index: 100;
  max-width: 400px;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-md);
  font-size: var(--font-size-xs);
  font-weight: 400;
  white-space: normal;
  word-break: break-word;
  pointer-events: none;
}

.doc-filename:hover .doc-tooltip,
.doc-description:hover .doc-tooltip {
  display: block;
}

.doc-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.doc-actions {
  white-space: nowrap;
}

/* Status badges */
.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--spacing-sm);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.status-done {
  background-color: var(--color-success-bg, #e6f4ea);
  color: var(--color-success-text, #1e7e34);
}

.status-failed {
  background-color: var(--color-error-bg);
  color: var(--color-error-text);
}

.status-processing {
  background-color: var(--color-primary-subtle);
  color: var(--color-primary);
}

.status-pending {
  background-color: var(--color-warning-bg, #fff8e1);
  color: var(--color-warning-text, #f57f17);
}

/* Upload area */
.upload-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  border: 2px dashed var(--color-border);
  border-radius: var(--border-radius-lg);
  background-color: var(--color-surface-hover);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
  cursor: pointer;
  text-align: center;
}

.upload-area:hover,
.upload-area.drag-over {
  border-color: var(--color-primary);
  background-color: var(--color-primary-subtle);
}

.upload-drop-hint {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  pointer-events: none;
}

.upload-accepted-types {
  font-size: var(--font-size-xs, 0.75rem);
  color: var(--color-text-muted);
  pointer-events: none;
}

/* Empty state for document list */
.doc-list-empty {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

/* Collection detail header */
.collection-detail-header {
  margin-bottom: var(--spacing-md);
}

.collection-detail-header h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.collection-detail-header p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ── Collection Sharing Section ───────────────────────────────── */
.share-section {
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.share-section h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.share-form {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.share-form input[type="text"] {
  flex: 1;
  padding: 6px 10px;
  font-size: var(--font-size-sm);
}

.share-error {
  font-size: var(--font-size-xs);
  color: var(--color-error-text);
  min-height: 0;
}

.share-error:not(:empty) {
  margin-bottom: var(--spacing-sm);
}

.shared-users-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.shared-users-empty {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  padding: var(--spacing-xs) 0;
}

.shared-user-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  background-color: var(--color-background);
  font-size: var(--font-size-sm);
}

.shared-user-name {
  font-weight: 500;
  color: var(--color-text);
}

/* ── Disk Space Display ──────────────────────────────────────── */
.space-info {
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-surface);
}

.space-info h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.space-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-xs) 0;
  font-size: var(--font-size-sm);
}

.space-label {
  color: var(--color-text-secondary);
}

.space-value {
  font-weight: 500;
  font-family: var(--font-mono);
  color: var(--color-text);
}

/* ── Small Danger Button ─────────────────────────────────────── */
.btn-danger-sm {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-family: var(--font-family);
  font-weight: 500;
  color: var(--color-text-inverse, #ffffff);
  background-color: var(--color-error);
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.btn-danger-sm:hover {
  opacity: 0.85;
}

/* ══════════════════════════════════════════════════════════════════
   MODAL
   ══════════════════════════════════════════════════════════════════ */

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: var(--color-overlay);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 100;
  align-items: center;
  justify-content: center;
}

.modal-overlay.visible {
  display: flex;
  animation: modal-overlay-in 0.2s ease-out;
}

.modal {
  width: 90%;
  max-width: 520px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-modal-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  animation: modal-slide-in 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.modal-header h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
}

.modal-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-lg);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}

/* ══════════════════════════════════════════════════════════════════
   UTILITY CLASSES
   ══════════════════════════════════════════════════════════════════ */

/* ── Passage Highlights (reference panel) ─────────────────────── */

.passage-highlight {
  background-color: var(--color-passage-highlight, rgba(255, 213, 79, 0.4));
  border-radius: 2px;
  padding: 1px 0;
  transition: background-color 0.3s ease;
}

.passage-highlight:first-of-type {
  scroll-margin-top: var(--spacing-lg);
}

.passage-highlight-active {
  background-color: var(--color-passage-highlight-active, rgba(255, 152, 0, 0.6));
}

/* ── Highlight Navigation Bar ────────────────────────────────── */

.highlight-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
}

.highlight-nav-count {
  min-width: 48px;
  text-align: center;
  color: var(--color-text-secondary);
}

.highlight-nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: var(--font-size-xs);
  line-height: 1;
  transition: background var(--transition-fast);
}

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

.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-badge-text);
  background-color: var(--color-badge-bg);
  border-radius: var(--border-radius-full);
}

.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-spinner);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

.spinner-lg {
  width: 32px;
  height: 32px;
  border-width: 3px;
}

.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 8px;
  font-size: var(--font-size-xs);
  color: var(--color-text-inverse);
  background-color: var(--color-text);
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: 60;
}

.tooltip:hover::after {
  opacity: 1;
}

/* ══════════════════════════════════════════════════════════════════
   PROFILE VIEW
   ══════════════════════════════════════════════════════════════════ */

.profile-body {
  overflow-y: auto;
  padding: var(--spacing-lg);
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.profile-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.profile-section h3 {
  margin: 0 0 var(--spacing-md) 0;
  font-size: var(--font-size-base);
  font-weight: 600;
}

.profile-user-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.profile-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: var(--color-primary-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
  box-shadow: var(--shadow-primary);
}

.profile-user-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.profile-username {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.profile-role-badge {
  display: inline-block;
  width: fit-content;
  font-size: var(--font-size-xs);
  padding: 2px 8px;
  border-radius: var(--border-radius-sm);
  background: var(--color-primary-subtle, var(--color-primary-bg, rgba(99,102,241,0.1)));
  color: var(--color-primary);
  font-weight: 600;
  text-transform: uppercase;
}

.profile-member-since {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.profile-usage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.profile-stat {
  text-align: center;
  background-color: var(--color-surface-hover);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
}

.profile-stat-label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: 2px;
}

.profile-stat-value {
  display: block;
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.profile-bar-container {
  margin-top: var(--spacing-sm);
}

.profile-bar-labels {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 4px;
}

.profile-setting-group {
  margin-bottom: var(--spacing-md);
}

.profile-setting-group > label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.profile-theme-options {
  display: flex;
  gap: var(--spacing-md);
}

.profile-radio-label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-sm);
  cursor: pointer;
}

.profile-setting-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.profile-settings-status {
  font-size: var(--font-size-sm);
  color: var(--color-success, #16a34a);
}

/* ══════════════════════════════════════════════════════════════════
   ANIMATIONS & MICRO-INTERACTIONS
   ══════════════════════════════════════════════════════════════════ */

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes slide-in-left {
  from { opacity: 0; transform: translateX(-8px); }
  to { opacity: 1; transform: translateX(0); }
}

/* Conversation item entrance */
.conversation-item {
  animation: slide-in-left 0.2s ease;
}

/* Skeleton loading placeholder */
.skeleton {
  background: linear-gradient(90deg,
    var(--color-surface-hover) 25%,
    var(--color-surface) 50%,
    var(--color-surface-hover) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
  border-radius: var(--border-radius);
}

@keyframes skeleton-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-conversation {
  height: 44px;
  margin-bottom: var(--spacing-xs);
  border-radius: var(--border-radius);
}

/* ══════════════════════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════════════════════ */

/* Login mobile */
@media (max-width: 480px) {
  .login-card {
    padding: var(--spacing-xl) var(--spacing-lg);
  }
  .login-container {
    margin-top: var(--spacing-lg);
    margin-left: var(--spacing-md);
    margin-right: var(--spacing-md);
    padding: var(--spacing-lg);
  }
}

/* Hamburger button — hidden by default on desktop */
.hamburger-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-lg);
}

.hamburger-toggle:hover {
  background-color: var(--color-surface-hover);
}

/* ── Sidebar overlay (mobile backdrop) ───────────────────────── */
.sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 35;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-smooth);
}

.sidebar-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

/* Tablet: reference panel overlays content */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 280px;
  }

  .reference-panel {
    width: 100%;
    min-width: 100%;
    transform: translateX(100%);
  }

  .reference-panel.open {
    transform: translateX(0);
  }
}

/* Mobile: sidebar hidden by default, hamburger visible */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 40;
    width: calc(100vw - 48px);
    min-width: calc(100vw - 48px);
    height: 100vh;
    box-shadow: var(--shadow-lg);
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .sidebar-close-btn {
    display: flex;
    font-size: 20px;
    min-width: 44px;
    min-height: 44px;
  }

  .sidebar.sidebar-open {
    transform: translateX(0);
  }

  .sidebar.collapsed {
    transform: translateX(-100%);
  }

  .hamburger-toggle {
    display: flex;
  }

  /* Chat messages & bubbles */
  .chat-messages {
    padding: var(--spacing-sm);
  }

  .message {
    max-width: 100%;
  }

  /* Reference panel full-screen overlay */
  .reference-panel {
    width: 100%;
    min-width: 100%;
  }

  .reference-header button {
    min-width: 44px;
    min-height: 44px;
  }

  /* Touch-friendly targets (44px minimum) */
  .chat-input {
    min-height: 44px;
    font-size: 16px; /* prevents iOS auto-zoom */
  }

  .send-btn,
  .stop-btn {
    min-height: 44px;
  }

  .sidebar-nav a,
  .sidebar-nav button {
    min-height: 44px;
  }

  .conversation-item {
    min-height: 44px;
  }

  /* Collection cards: single column stack */
  .collection-cards {
    grid-template-columns: 1fr;
  }

  .collection-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .collection-card-info {
    width: 100%;
  }

  .collection-card-desc {
    white-space: normal;
  }

  .collection-card-meta {
    margin-left: 0;
    margin-top: var(--spacing-xs);
  }

  /* Profile: single column */
  .profile-usage-grid {
    grid-template-columns: 1fr;
  }

  .profile-body {
    padding: var(--spacing-sm);
  }

  /* Token counter wrap */
  .token-counter {
    flex-wrap: wrap;
  }

  /* Collection selector full-width */
  .collection-selector {
    width: 100%;
    margin-left: 0;
    margin-right: 0;
  }

  /* Chat input safe area for notch devices */
  .chat-input-container {
    padding: var(--spacing-sm) var(--spacing-md);
    padding-bottom: calc(var(--spacing-md) + env(safe-area-inset-bottom, 0px));
  }

  /* Bottom-sheet modals on mobile */
  .modal {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    max-width: 100%;
    max-height: 85vh;
    border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
    animation: bottom-sheet-in 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .modal-overlay.visible {
    align-items: flex-end;
  }
}

@keyframes bottom-sheet-in {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

/* ══════════════════════════════════════════════════════════════════
   Admin Panel
   ══════════════════════════════════════════════════════════════════ */

.admin-layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

.admin-sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  background-color: var(--color-sidebar-bg);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
}

.admin-sidebar-header {
  padding: var(--spacing-lg) var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.admin-sidebar-header h2 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.admin-sidebar-header a {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  text-decoration: none;
}

.admin-sidebar-header a:hover {
  text-decoration: underline;
}

.admin-nav {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-sm);
  gap: var(--spacing-xs);
}

.admin-nav a {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

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

.admin-nav a.active {
  background-color: var(--color-primary-subtle);
  color: var(--color-primary);
  font-weight: 600;
}

.admin-nav a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* ── Admin Main Content ─────────────────────────────────────── */

.admin-main {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-xl);
}

.admin-section {
  display: none;
}

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

.admin-section h2 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
}

/* ── Stat Cards ─────────────────────────────────────────────── */

.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.stat-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl) var(--spacing-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

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

.stat-card .stat-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  line-height: 1.2;
}

.stat-card .stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--spacing-xs);
}

/* ── Admin Table ────────────────────────────────────────────── */

.admin-table {
  width: 100%;
  min-width: 900px;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-lg);
}

.admin-table th,
.admin-table td {
  padding: var(--spacing-sm) var(--spacing-lg);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.admin-table th {
  font-weight: 600;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  background-color: var(--color-surface-elevated, var(--color-surface));
  border-bottom-width: 2px;
  position: sticky;
  top: 0;
}

.admin-table td {
  color: var(--color-text);
  transition: background-color var(--transition-fast);
}

.admin-table tr:hover td {
  background-color: var(--color-primary-subtle);
}

.admin-table .actions {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

/* ── Badges ─────────────────────────────────────────────────── */

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.badge-admin {
  background-color: var(--color-primary);
  color: var(--color-text-inverse, #fff);
}

.badge-locked {
  background-color: var(--color-error, #dc3545);
  color: var(--color-text-inverse, #fff);
}

.badge-yes {
  background-color: var(--color-success, #28a745);
  color: var(--color-text-inverse, #fff);
}

/* ── Admin Form Row ─────────────────────────────────────────── */

.admin-form-row {
  display: flex;
  align-items: flex-end;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.admin-form-row label {
  display: flex;
  flex-direction: column;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  gap: var(--spacing-xs);
}

.admin-form-row input[type="text"],
.admin-form-row input[type="number"],
.admin-form-row textarea {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-family: var(--font-family);
}

.admin-form-row input:focus,
.admin-form-row textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-alpha, rgba(79, 70, 229, 0.25));
}

.admin-form-row .checkbox-label {
  flex-direction: row;
  align-items: center;
  gap: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
}

.admin-form-row .btn {
  width: auto;
}

.admin-section > .btn-primary {
  width: auto;
}

/* ── Collection Cards ───────────────────────────────────────── */

.collection-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.collection-cards .collection-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md);
  transition: all var(--transition-smooth);
}

.collection-cards .collection-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.collection-card h4 {
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.collection-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.collection-card .meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* ── Config Section ─────────────────────────────────────────── */

.config-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.config-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.config-item label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
}

.config-item input {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-sm);
}

.config-item input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-alpha, rgba(79, 70, 229, 0.25));
}

/* ── Password display ───────────────────────────────────────── */

.password-display {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  word-break: break-all;
  user-select: all;
}

/* ── Admin responsive ───────────────────────────────────────── */

@media (max-width: 768px) {
  .admin-layout {
    flex-direction: column;
  }
  .admin-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }
  .admin-nav {
    flex-direction: row;
    overflow-x: auto;
  }
  .admin-main {
    padding: var(--spacing-md);
  }
  .admin-table {
    display: block;
    overflow-x: auto;
  }
}

/* ══════════════════════════════════════════════════════════════════
   DEMO WARNING MODAL
   ══════════════════════════════════════════════════════════════════ */

.demo-modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.demo-modal-overlay.hidden {
  display: none;
}

.demo-modal {
  background: var(--color-modal-bg);
  border: 1px solid var(--color-border-light);
  padding: 2rem;
  border-radius: 12px;
  max-width: 450px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow-xl);
}

.demo-modal h2 {
  margin: 0 0 1rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text, #18181b);
}

.demo-modal p {
  margin: 0 0 1.5rem;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--color-text-secondary, #71717a);
}

.demo-modal-confirm-btn {
  background: #dc2626;
  color: white;
  border: none;
  padding: 0.75rem 2rem;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  font-weight: 600;
}

.demo-modal-confirm-btn:hover {
  background: #b91c1c;
}

/* ══════════════════════════════════════════════════════════════════
   DELETE ACCOUNT MODAL
   ══════════════════════════════════════════════════════════════════ */

.delete-account-modal { text-align: left; }
.delete-account-modal label { display: block; margin: 0 0 0.5rem; font-weight: 600; font-size: 0.9rem; }
.delete-account-modal input[type="password"] {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.95rem;
  margin-bottom: 1rem;
  background: var(--color-input-bg);
  color: var(--color-text);
  box-sizing: border-box;
}
.delete-account-error { color: #dc2626; font-size: 0.85rem; margin: 0 0 1rem; }
.delete-account-error.hidden { display: none; }
.delete-account-actions { display: flex; justify-content: flex-end; gap: 0.75rem; }
.profile-session-text { font-size: var(--font-size-sm); color: var(--color-text-secondary); margin: 0 0 var(--spacing-md) 0; }
.profile-danger-zone { border-top: 1px solid var(--color-border); margin-top: 1.5rem; padding-top: 1rem; }
.profile-danger-text { font-size: 0.85rem; color: var(--color-text-secondary); margin: 0.5rem 0 1rem; }
.profile-danger-admin { font-size: 0.85rem; color: var(--color-text-secondary); font-style: italic; }

/* ══════════════════════════════════════════════════════════════════
   LEGAL PAGES & FOOTER
   ══════════════════════════════════════════════════════════════════ */

/* Legal page layout */
.legal-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-family);
}
.legal-content {
  max-width: 800px;
  width: 100%;
  padding: var(--spacing-xl) var(--spacing-lg);
  flex: 1;
}
.legal-content h1 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
}
.legal-content h2 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}
.legal-content p {
  font-size: var(--font-size-base);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}
.legal-content ul {
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}
.legal-content li {
  font-size: var(--font-size-base);
  line-height: 1.7;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
}
.legal-back-link {
  display: inline-block;
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  text-decoration: none;
}
.legal-back-link:hover { text-decoration: underline; }

/* Login promo text */
.login-promo {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  line-height: 1.5;
  margin: var(--spacing-sm) 0 var(--spacing-xl);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-surface-alt, var(--color-bg));
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--color-border-light);
}
.login-promo a {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
}
.login-promo a:hover {
  text-decoration: underline;
}

/* Legal footer */
.legal-footer {
  width: 100%;
  text-align: center;
  padding: var(--spacing-lg) var(--spacing-md);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}
.legal-footer nav {
  margin-bottom: var(--spacing-sm);
}
.legal-footer a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.legal-footer a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}
.footer-separator {
  margin: 0 var(--spacing-sm);
  color: var(--color-text-tertiary, var(--color-text-secondary));
  opacity: 0.5;
}
.legal-footer p {
  margin: 0;
}

/* Registration consent checkboxes */
.legal-checkboxes {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  text-align: left;
  font-size: var(--font-size-sm);
}
.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  cursor: pointer;
  line-height: 1.4;
  color: var(--color-text-secondary);
}
.checkbox-label input[type="checkbox"] {
  margin-top: 3px;
  flex-shrink: 0;
  accent-color: var(--color-primary);
}
.checkbox-label a {
  color: var(--color-primary);
  text-decoration: none;
}
.checkbox-label a:hover {
  text-decoration: underline;
}

/* Sidebar legal links (chat page) */
.sidebar-legal-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  width: 100%;
  padding: var(--spacing-xs) var(--spacing-md);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-2xs);
  flex-shrink: 0;
}
.sidebar-legal-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}
.sidebar-legal-links a:hover {
  opacity: 1;
  color: var(--color-primary);
}

/* ══════════════════════════════════════════════════════════════════
   REDUCED MOTION
   ══════════════════════════════════════════════════════════════════ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}