/*
 * noteclaw.ai Design System
 * Source of truth: DESIGN.md
 * Direction: Warm + Technical
 *
 * This file is loaded separately from Tailwind CSS to prevent tree-shaking.
 */

/* ============================================
   Design Tokens
   ============================================ */
:root {
  --font-display: 'Satoshi', 'Noto Sans SC', system-ui, sans-serif;
  --font-body: 'DM Sans', 'Noto Sans SC', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --color-claw: #E8462A;
  --color-claw-hover: #D23D24;
  --color-claw-dim: #E8462A18;

  --color-bg: #F5F3EC;
  --color-surface: #FFFFFF;
  --color-elevated: #EEECE4;
  --color-border: #DDD8CC;
  --color-border-subtle: #E8E4DA;
  --color-text: #1A1815;
  --color-text-secondary: #6B6560;
  --color-text-tertiary: #857F77;
  --color-text-faint: #9B958D;

  --color-success: #2D8659;
  --color-warning: #8F6A09;
  --color-error: #C53030;
  --color-info: #2B6CB0;

  --color-code-bg: #1A1815;
  --color-code-text: #E8E4DA;
  --color-focus-ring: #E8462A40;

  --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.10);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.12);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  --z-dropdown: 50;
  --z-sticky: 60;
  --z-overlay: 70;
  --z-modal: 80;
  --z-toast: 90;

  --max-w-auth: 400px;
  --max-w-reading: 620px;
  --max-w-content: 880px;
  --max-w-wide: 1080px;

  --sidebar-width: 232px;
  --sidebar-collapsed: 56px;
}

.dark {
  --color-bg: #0F0F12;
  --color-surface: #18181D;
  --color-elevated: #222228;
  --color-border: #2E2E35;
  --color-border-subtle: #252530;
  --color-text: #E8E4DA;
  --color-text-secondary: #918D85;
  --color-text-tertiary: #6E6A64;
  --color-text-faint: #5E5A54;
  --color-success: #34D399;
  --color-warning: #FBBF24;
  --color-error: #EF4444;
  --color-info: #60A5FA;
  --color-code-bg: #0A0A0C;
  --color-focus-ring: #E8462A50;
}

/* ============================================
   Base
   ============================================ */
body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--color-focus-ring);
}

/* Input/button/textarea focus — higher specificity to override inline styles */
input:focus, input:focus-visible,
textarea:focus, textarea:focus-visible,
select:focus, select:focus-visible {
  outline: none !important;
  border-color: var(--color-claw) !important;
  box-shadow: 0 0 0 3px var(--color-focus-ring) !important;
}

button:focus-visible, a:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--color-focus-ring);
}

/* ============================================
   Layout: Sidebar + Main
   ============================================ */
.app-layout { display: flex; min-height: 100vh; }

/* --- Sidebar: collapsible via data-state --- */
.sidebar {
  background: var(--color-surface);
  border-right: 1px solid var(--color-border-subtle);
  display: flex; flex-direction: column;
  padding: 16px 0; flex-shrink: 0;
  position: fixed; top: 0; left: 0; bottom: 0;
  z-index: var(--z-sticky);
  overflow: hidden;
  transition: width 0.2s ease-in-out;
}
.sidebar[data-state="expanded"] { width: var(--sidebar-width); }
.sidebar[data-state="collapsed"] { width: var(--sidebar-collapsed); align-items: center; padding: 12px 0; }

/* --- Sidebar Rail (hover-sensitive edge strip) --- */
.sidebar-rail {
  position: absolute; right: -4px; top: 0; bottom: 0;
  width: 8px; cursor: ew-resize;
  background: transparent;
  z-index: 1;
  transition: background 0.15s;
}
.sidebar-rail::after {
  content: "";
  position: absolute; right: 3px; top: 50%; transform: translateY(-50%);
  width: 2px; height: 32px; border-radius: 1px;
  background: var(--color-border);
  opacity: 0; transition: opacity 0.15s;
}
.sidebar-rail:hover::after { opacity: 1; }

/* --- Header --- */
.sidebar-header { padding: 0 16px; margin-bottom: 16px; }
.sidebar[data-state="collapsed"] .sidebar-header { padding: 0; margin-bottom: 12px; }

.sidebar-logo { font-family: var(--font-display); font-weight: 700; font-size: 16px; color: var(--color-text); text-decoration: none; display: block; margin-bottom: 12px; white-space: nowrap; overflow: hidden; }
.sidebar-logo-full { display: inline-flex; align-items: center; gap: 6px; }
.sidebar-logo-mark { width: 20px; height: 20px; flex-shrink: 0; }
.sidebar-logo-dot { color: var(--color-text-tertiary); }
.sidebar-logo-claw { color: var(--color-claw); }
.sidebar-logo-compact { display: none; }
.sidebar-logo-mark-compact { width: 28px; height: 28px; }
.sidebar[data-state="collapsed"] .sidebar-logo { text-align: center; margin-bottom: 0; }
.sidebar[data-state="collapsed"] .sidebar-logo-full { display: none; }
.sidebar[data-state="collapsed"] .sidebar-logo-compact { display: inline-flex; justify-content: center; }

/* --- Search form --- */
.sidebar-search-form { display: flex; align-items: center; gap: 6px; padding: 7px 10px; background: var(--color-elevated); border: 1px solid var(--color-border-subtle); border-radius: var(--radius-md); transition: border-color 0.15s; }
.sidebar-search-form:focus-within { border-color: var(--color-claw); box-shadow: 0 0 0 3px var(--color-focus-ring); }
.sidebar-search-icon { flex-shrink: 0; line-height: 0; display: inline-flex; align-items: center; color: var(--color-text-faint); }
.sidebar-search-input { flex: 1; background: none; border: none; outline: none; font-family: var(--font-body); font-size: 12px; color: var(--color-text); padding: 0; min-width: 0; }
.sidebar-search-input::placeholder { color: var(--color-text-faint); }
.sidebar-search-input:focus { outline: none !important; border: none !important; box-shadow: none !important; }
.sidebar-search-kbd { font-family: var(--font-mono); font-size: 10px; background: var(--color-surface); border: 1px solid var(--color-border-subtle); padding: 1px 5px; border-radius: 3px; flex-shrink: 0; color: var(--color-text-faint); }
.sidebar[data-state="collapsed"] .sidebar-search-form { display: none; }

/* --- Section labels --- */
.sidebar-section { font-family: var(--font-mono); font-size: 10px; color: var(--color-text-faint); text-transform: uppercase; letter-spacing: 0.08em; padding: 0 16px; margin: 16px 0 4px; white-space: nowrap; }
.sidebar[data-state="collapsed"] .sidebar-section { display: none; }

/* --- Nav links --- */
.sidebar-nav { display: flex; flex-direction: column; gap: 1px; padding: 0 8px; }
.sidebar-link { display: flex; align-items: center; gap: 10px; padding: 7px 12px; font-size: 13px; color: var(--color-text-secondary); text-decoration: none; border-radius: var(--radius-md); transition: all 0.15s; position: relative; }
.sidebar-link:hover { background: var(--color-elevated); color: var(--color-text); }
.sidebar-link-active { background: var(--color-claw-dim); color: var(--color-claw); font-weight: 500; }
.sidebar-link-icon { width: 20px; text-align: center; flex-shrink: 0; display: inline-flex; align-items: center; justify-content: center; }
.sidebar-icon { flex-shrink: 0; }
.sidebar-link-label { flex: 1; white-space: nowrap; overflow: hidden; }
.sidebar-link-count { font-family: var(--font-mono); font-size: 10px; color: var(--color-text-faint); margin-left: auto; }
.sidebar-link-badge { font-family: var(--font-mono); font-size: 9px; padding: 1px 5px; border-radius: var(--radius-full); background: var(--color-claw); color: #fff; margin-left: auto; }
.sidebar-link-kbd { font-family: var(--font-mono); font-size: 9px; color: var(--color-text-faint); margin-left: auto; opacity: 0; transition: opacity 0.15s; }
.sidebar-link:hover .sidebar-link-kbd { opacity: 1; }

/* Collapsed: icon-only links */
.sidebar[data-state="collapsed"] .sidebar-link { justify-content: center; padding: 10px; }
.sidebar[data-state="collapsed"] .sidebar-link-label,
.sidebar[data-state="collapsed"] .sidebar-link-count,
.sidebar[data-state="collapsed"] .sidebar-link-kbd,
.sidebar[data-state="collapsed"] .sidebar-link-badge { display: none; }

/* --- Tooltip (collapsed mode only, CSS-only via ::before arrow + ::after label) --- */
.sidebar[data-state="collapsed"] .sidebar-link[data-tooltip]::before {
  content: "";
  position: absolute; left: calc(100% + 5px); top: 50%; transform: translateY(-50%);
  border: 5px solid transparent; border-right-color: var(--color-text);
  pointer-events: none;
  opacity: 0; transition: opacity 0.15s; transition-delay: 0s;
  z-index: var(--z-dropdown);
}
.sidebar[data-state="collapsed"] .sidebar-link[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute; left: calc(100% + 15px); top: 50%; transform: translateY(-50%);
  background: var(--color-text); color: var(--color-bg);
  font-family: var(--font-mono); font-size: 11px;
  padding: 6px 12px; border-radius: var(--radius-sm);
  white-space: nowrap; pointer-events: none;
  box-shadow: var(--shadow-md);
  opacity: 0; transition: opacity 0.15s; transition-delay: 0s;
  z-index: var(--z-dropdown);
}
.sidebar[data-state="collapsed"] .sidebar-link[data-tooltip]:hover::before,
.sidebar[data-state="collapsed"] .sidebar-link[data-tooltip]:hover::after { opacity: 1; transition-delay: 300ms; }

/* --- Sub navigation (sources) --- */
.sidebar-sub { padding: 0 8px; }
.sidebar-sub-link { display: flex; align-items: center; gap: 8px; padding: 5px 12px 5px 42px; font-size: 12px; color: var(--color-text-tertiary); text-decoration: none; border-radius: var(--radius-sm); transition: all 0.15s; }
.sidebar-sub-link:hover { color: var(--color-text-secondary); background: var(--color-elevated); }
.sidebar-sub-link-active { color: var(--color-text); }
.sidebar-sub-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
.sidebar[data-state="collapsed"] .sidebar-sub { display: none; }

/* --- Sources popover (collapsed mode) --- */
.sidebar-sources-trigger { display: none; }
.sidebar[data-state="collapsed"] .sidebar-sources-trigger {
  display: flex; align-items: center; justify-content: center;
  padding: 10px; margin: 0 8px;
  border-radius: var(--radius-md); cursor: pointer;
  color: var(--color-text-secondary); position: relative;
  transition: all 0.15s;
}
.sidebar[data-state="collapsed"] .sidebar-sources-trigger:hover { background: var(--color-elevated); color: var(--color-text); }

.sidebar-sources-popover {
  display: none; position: absolute;
  left: calc(100% + 8px); top: 50%; transform: translateY(-50%);
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); box-shadow: var(--shadow-lg);
  padding: 8px 0; min-width: 180px;
  z-index: var(--z-dropdown);
}
.sidebar-sources-popover-title {
  font-family: var(--font-mono); font-size: 10px; color: var(--color-text-faint);
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 4px 12px 8px; border-bottom: 1px solid var(--color-border-subtle); margin-bottom: 4px;
}
.sidebar-sources-popover .sidebar-sub-link { padding: 6px 12px; }
.sidebar[data-state="collapsed"] .sidebar-sources-trigger:hover .sidebar-sources-popover { display: block; }

/* --- Bottom area --- */
.sidebar-bottom { margin-top: auto; padding: 8px; border-top: 1px solid var(--color-border-subtle); }
.sidebar-usage { padding: 8px 12px; margin-bottom: 4px; }
.sidebar-usage-row { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 10px; color: var(--color-text-faint); margin-bottom: 4px; }
.sidebar-usage-bar { height: 3px; background: var(--color-elevated); border-radius: 2px; overflow: hidden; }
.sidebar-usage-fill { height: 100%; border-radius: 2px; transition: width 0.3s; }
.sidebar[data-state="collapsed"] .sidebar-usage { display: none; }

.sidebar-user { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: var(--radius-md); cursor: pointer; transition: background 0.15s; }
.sidebar-user:hover { background: var(--color-elevated); }
.sidebar-user-name { font-family: var(--font-display); font-weight: 600; font-size: 13px; }
.sidebar-user-plan { font-family: var(--font-mono); font-size: 10px; color: var(--color-text-faint); }
.sidebar[data-state="collapsed"] .sidebar-user-info { display: none; }
.sidebar[data-state="collapsed"] .sidebar-user { justify-content: center; padding: 8px; }

/* --- Main content area --- */
.app-main {
  flex: 1; min-width: 0;
  margin-left: var(--sidebar-width);
  transition: margin-left 0.2s ease-in-out;
}
.app-main main { margin: 0 auto; }
.app-main[data-sidebar-state="collapsed"] { margin-left: var(--sidebar-collapsed); }

/* --- Sidebar trigger button --- */
.sidebar-trigger {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  background: none; border: 1px solid transparent;
  border-radius: var(--radius-md); cursor: pointer;
  color: var(--color-text-secondary);
  transition: all 0.15s;
  flex-shrink: 0;
}
.sidebar-trigger:hover { background: var(--color-elevated); border-color: var(--color-border-subtle); color: var(--color-text); }
.sidebar-trigger svg { width: 16px; height: 16px; }

/* --- Content header (holds trigger + breadcrumb) --- */
.content-header {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 24px;
  border-bottom: 1px solid var(--color-border-subtle);
}

/* --- Breadcrumb --- */
.breadcrumb { display: flex; align-items: center; gap: 6px; font-size: 13px; }
.breadcrumb-link { color: var(--color-text-tertiary); text-decoration: none; transition: color 0.15s; }
.breadcrumb-link:hover { color: var(--color-text-secondary); }
.breadcrumb-sep { color: var(--color-text-faint); font-size: 12px; }
.breadcrumb-current { color: var(--color-text); font-weight: 500; }

/* ============================================
   Components
   ============================================ */
.avatar { border-radius: var(--radius-full); display: flex; align-items: center; justify-content: center; font-family: var(--font-display); font-weight: 600; flex-shrink: 0; }
.avatar-sm { width: 32px; height: 32px; font-size: 12px; }
.avatar-md { width: 40px; height: 40px; font-size: 14px; }
.avatar-human { background: var(--color-elevated); color: var(--color-text); border: 1px solid var(--color-border-subtle); }
.avatar-bot { background: var(--color-claw); color: #fff; }

.badge { font-family: var(--font-mono); font-size: 10px; padding: 2px 7px; border-radius: 3px; letter-spacing: 0.02em; display: inline-block; }
.badge-active { background: #2D865915; color: var(--color-success); }
.badge-processing { background: var(--color-claw-dim); color: var(--color-claw); }
.badge-failed { background: #C5303015; color: var(--color-error); }
.badge-pending { background: #8F6A0915; color: var(--color-warning); }

.toast-container { position: fixed; top: 16px; right: 16px; z-index: var(--z-toast); display: flex; flex-direction: column; gap: 8px; max-width: 380px; }
.toast { display: flex; align-items: center; gap: 10px; padding: 12px 16px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); box-shadow: var(--shadow-md); font-size: 13px; animation: toast-in 0.2s ease-out; }
@keyframes toast-in { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }
.toast-action { font-family: var(--font-mono); font-size: 11px; color: var(--color-claw); cursor: pointer; flex-shrink: 0; text-decoration: none; }
.toast-close { color: var(--color-text-faint); cursor: pointer; font-size: 14px; flex-shrink: 0; }

/* ============================================
   Prose
   ============================================ */
.prose h1 { font-family: var(--font-display); font-size: 1.75rem; font-weight: 700; margin-bottom: 1rem; letter-spacing: -0.02em; }
.prose h2 { font-family: var(--font-display); font-size: 1.25rem; font-weight: 700; margin-top: 2rem; margin-bottom: 0.5rem; padding-left: 12px; border-left: 3px solid var(--color-claw); }
.prose p { margin-bottom: 0.75rem; line-height: 1.75; color: var(--color-text-secondary); }
.prose strong { color: var(--color-text); font-weight: 600; }
.prose ul { list-style-type: disc; padding-left: 1.5rem; margin-bottom: 0.75rem; }
.prose li { margin-bottom: 0.25rem; }

/* ============================================
   Utilities
   ============================================ */
.line-clamp-1 { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.line-clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.line-clamp-4 { display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }

/* --- Compose multi-select --- */
.compose-checkbox { width: 16px; height: 16px; accent-color: var(--color-claw); cursor: pointer; flex-shrink: 0; }
.compose-floating-bar {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 12px 20px;
  box-shadow: var(--shadow-lg); z-index: var(--z-sticky);
  min-width: 320px; max-width: 480px;
}
.compose-bar-cancel { background: none; border: none; font-family: var(--font-body); font-size: 13px; color: var(--color-text-tertiary); cursor: pointer; }
.compose-bar-cancel:hover { color: var(--color-text-secondary); }
.compose-bar-submit { background: var(--color-claw); color: #fff; border: none; padding: 8px 16px; border-radius: var(--radius-md); font-family: var(--font-mono); font-size: 12px; cursor: pointer; transition: background 0.15s; }
.compose-bar-submit:hover { background: var(--color-claw-hover); }

/* Mobile compose button (show page) */
.mobile-compose-btn { display: none; margin-top: 32px; }

/* ============================================
   Responsive
   ============================================ */

/* Mobile: sidebar hidden, bottom nav visible */
@media (max-width: 768px) {
  .sidebar { display: none !important; }
  .app-main,
  .app-main[data-sidebar-state="collapsed"],
  .app-main[data-sidebar-state="expanded"] { margin-left: 0; padding-bottom: 72px; }
  .mobile-bottomnav { display: flex; justify-content: space-around; padding: 10px 0 env(safe-area-inset-bottom, 20px); border-top: 1px solid var(--color-border-subtle); background: var(--color-surface); position: fixed; bottom: 0; left: 0; right: 0; z-index: var(--z-sticky); }
  .sidebar-trigger { display: none; }
  .compose-checkbox { display: none; }
  .compose-floating-bar { display: none !important; }
  .mobile-compose-btn { display: block; }
}

/* Tablet & desktop: sidebar visible, bottom nav hidden */
@media (min-width: 769px) {
  .mobile-bottomnav { display: none; }
}