/* ============================================================
   LearnEverything -- Custom Design System
   A warm, educational aesthetic with teal/indigo accents
   ============================================================ */

/* ----- Design Tokens ----- */
:root {
  /* Surface & background */
  --color-bg-base: #FAFAF8;
  --color-bg-surface: #FFFFFF;
  --color-bg-muted: #F2F0EC;
  --color-bg-subtle: #E8E6E1;
  --color-bg-overlay: rgba(0, 0, 0, 0.4);

  /* Accent -- teal dominant, warm indigo secondary */
  --color-accent: #0D9488;
  --color-accent-hover: #0F766E;
  --color-accent-soft: #CCFBF1;
  --color-accent-muted: #99F6E4;
  --color-accent-text: #065F53;
  --color-secondary: #6366F1;
  --color-secondary-soft: #E0E7FF;

  /* Text */
  --color-text-primary: #1C1917;
  --color-text-secondary: #78716C;
  --color-text-tertiary: #A8A29E;
  --color-text-inverse: #FFFFFF;

  /* Border */
  --color-border: #E7E5E0;
  --color-border-strong: #D6D3CD;

  /* Difficulty pills */
  --color-beginner: #10B981;
  --color-beginner-bg: #D1FAE5;
  --color-intermediate: #F59E0B;
  --color-intermediate-bg: #FEF3C7;
  --color-advanced: #EF4444;
  --color-advanced-bg: #FEE2E2;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(28, 25, 23, 0.05);
  --shadow-md: 0 4px 12px rgba(28, 25, 23, 0.08);
  --shadow-lg: 0 8px 24px rgba(28, 25, 23, 0.12);
  --shadow-card: 0 1px 3px rgba(28, 25, 23, 0.06), 0 1px 2px rgba(28, 25, 23, 0.04);
  --shadow-card-hover: 0 10px 28px rgba(28, 25, 23, 0.1), 0 4px 10px rgba(28, 25, 23, 0.06);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-pill: 999px;

  /* Spacing (4px base) */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-8: 32px;
  --sp-10: 40px;
  --sp-12: 48px;
  --sp-16: 64px;

  /* Typography */
  --font-sans: 'Inter', 'Pretendard', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;
  --text-xs: 0.75rem;
  --text-sm: 0.8125rem;
  --text-base: 0.9375rem;
  --text-md: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;

  /* Transition */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.55, 0, 1, 0.45);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;

  /* Layout */
  --header-height: 64px;
  --max-width: 1120px;
}

/* ----- Dark Mode ----- */
[data-theme="dark"] {
  --color-bg-base: #171412;
  --color-bg-surface: #211E1B;
  --color-bg-muted: #2A2622;
  --color-bg-subtle: #352F2A;
  --color-bg-overlay: rgba(0, 0, 0, 0.6);

  --color-accent: #2DD4BF;
  --color-accent-hover: #5EEAD4;
  --color-accent-soft: #042F2E;
  --color-accent-muted: #0D3D38;
  --color-accent-text: #5EEAD4;
  --color-secondary: #818CF8;
  --color-secondary-soft: #1E1B4B;

  --color-text-primary: #F5F5F4;
  --color-text-secondary: #A8A29E;
  --color-text-tertiary: #78716C;
  --color-text-inverse: #1C1917;

  --color-border: #352F2A;
  --color-border-strong: #44403C;

  --color-beginner-bg: #064E3B;
  --color-intermediate-bg: #78350F;
  --color-advanced-bg: #7F1D1D;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-card-hover: 0 10px 28px rgba(0, 0, 0, 0.5), 0 4px 10px rgba(0, 0, 0, 0.3);
}


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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--duration-normal) var(--ease-out),
              color var(--duration-normal) var(--ease-out);
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  border: none;
  cursor: pointer;
  background: none;
  color: inherit;
}

input {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

img {
  display: block;
  max-width: 100%;
}


/* ============================================================
   Layout
   ============================================================ */
.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--sp-6) var(--sp-4);
  padding-top: calc(var(--header-height) + var(--sp-6));
}

@media (min-width: 768px) {
  .main-content {
    padding: var(--sp-8) var(--sp-6);
    padding-top: calc(var(--header-height) + var(--sp-8));
  }
}


/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.85);
  transition: background var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out);
}

[data-theme="dark"] .site-header {
  background: rgba(33, 30, 27, 0.88);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding: 0 var(--sp-4);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-shrink: 0;
  cursor: pointer;
  user-select: none;
}

.header-brand-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
}

.header-brand-text {
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

@media (max-width: 479px) {
  .header-brand-text {
    display: none;
  }
}

.header-search {
  flex: 1;
  max-width: 480px;
  position: relative;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-shrink: 0;
}

.header-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
}

.header-btn:hover {
  background: var(--color-bg-muted);
  color: var(--color-text-primary);
}

.header-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-random {
  width: auto;
  padding: 0 var(--sp-3);
  gap: var(--sp-1);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
}

.btn-random:hover {
  background: var(--color-accent-soft);
  color: var(--color-accent-hover);
}

.btn-random-label {
  display: none;
}

@media (min-width: 480px) {
  .btn-random-label {
    display: inline;
  }
}


/* ============================================================
   Search Input
   ============================================================ */
.search-wrapper {
  position: relative;
  width: 100%;
}

.search-input-container {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  height: 40px;
  padding: 0 var(--sp-3);
  background: var(--color-bg-muted);
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  transition: all var(--duration-fast) var(--ease-out);
}

.search-input-container:focus-within {
  background: var(--color-bg-surface);
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}

.search-icon {
  flex-shrink: 0;
  color: var(--color-text-tertiary);
  width: 18px;
  height: 18px;
}

.search-input {
  flex: 1;
  height: 100%;
  font-size: var(--text-sm);
  color: var(--color-text-primary);
}

.search-input::placeholder {
  color: var(--color-text-tertiary);
}

.search-clear {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: none;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-bg-subtle);
  color: var(--color-text-tertiary);
  font-size: 12px;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.search-clear:hover {
  background: var(--color-border-strong);
  color: var(--color-text-primary);
}

.search-clear.visible {
  display: flex;
}


/* ============================================================
   Search Suggestions Dropdown
   ============================================================ */
.search-suggestions {
  position: absolute;
  top: calc(100% + var(--sp-2));
  left: 0;
  right: 0;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 200;
  display: none;
  overflow: hidden;
}

.search-suggestions.open {
  display: block;
  animation: dropdown-in var(--duration-fast) var(--ease-out);
}

@keyframes dropdown-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.suggestion-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  cursor: pointer;
  transition: background var(--duration-fast);
}

.suggestion-item:hover,
.suggestion-item.active {
  background: var(--color-bg-muted);
}

.suggestion-term {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
}

.suggestion-category {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.suggestion-hint {
  padding: var(--sp-2) var(--sp-4);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  border-top: 1px solid var(--color-border);
  text-align: center;
}


/* ============================================================
   Category Navigation
   ============================================================ */
.category-nav {
  display: flex;
  gap: var(--sp-2);
  overflow-x: auto;
  padding: var(--sp-1) 0;
  margin-bottom: var(--sp-6);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.category-nav::-webkit-scrollbar {
  display: none;
}

.category-pill {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: 500;
  white-space: nowrap;
  color: var(--color-text-secondary);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  flex-shrink: 0;
}

.category-pill:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.category-pill:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.category-pill.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-text-inverse);
}

.category-pill-count {
  font-size: var(--text-xs);
  opacity: 0.7;
}


/* ============================================================
   Sort Bar
   ============================================================ */
.sort-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-5);
}

.sort-info {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.sort-controls {
  display: flex;
  gap: var(--sp-1);
  background: var(--color-bg-muted);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.sort-btn {
  padding: var(--sp-1) var(--sp-3);
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: 4px;
  color: var(--color-text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
}

.sort-btn:hover {
  color: var(--color-text-primary);
}

.sort-btn.active {
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-sm);
}


/* ============================================================
   Card Grid
   ============================================================ */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
}

@media (min-width: 560px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}


/* ============================================================
   Keyword Card
   ============================================================ */
.keyword-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  cursor: pointer;
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.keyword-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-border-strong);
}

.keyword-card:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-2);
}

.card-term {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.card-category-badge {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 2px var(--sp-2);
  background: var(--color-bg-muted);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  white-space: nowrap;
  flex-shrink: 0;
}

.card-definition {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-top: auto;
  padding-top: var(--sp-2);
  flex-wrap: wrap;
}

.difficulty-pill {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--sp-2);
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: capitalize;
}

.difficulty-pill[data-level="beginner"] {
  background: var(--color-beginner-bg);
  color: var(--color-beginner);
}

.difficulty-pill[data-level="intermediate"] {
  background: var(--color-intermediate-bg);
  color: var(--color-intermediate);
}

.difficulty-pill[data-level="advanced"] {
  background: var(--color-advanced-bg);
  color: var(--color-advanced);
}

.card-tag {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  padding: 2px var(--sp-2);
  background: var(--color-bg-muted);
  border-radius: var(--radius-pill);
}

.card-views {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 3px;
}


/* ============================================================
   Keyword Detail Page
   ============================================================ */
.keyword-detail {
  max-width: 740px;
  margin: 0 auto;
}

.detail-back {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--sp-5);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
}

.detail-back:hover {
  background: var(--color-bg-muted);
  color: var(--color-text-primary);
}

.detail-hero {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-8) var(--sp-6);
  margin-bottom: var(--sp-6);
}

@media (max-width: 479px) {
  .detail-hero {
    padding: var(--sp-5) var(--sp-4);
    border-radius: var(--radius-lg);
  }
}

.detail-meta {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
  flex-wrap: wrap;
}

.detail-term {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: var(--sp-3);
}

@media (min-width: 768px) {
  .detail-term {
    font-size: var(--text-3xl);
  }
}

.detail-definition-short {
  font-size: var(--text-md);
  color: var(--color-text-secondary);
  line-height: 1.65;
}

.detail-views {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

.detail-tag {
  padding: var(--sp-1) var(--sp-3);
  background: var(--color-bg-muted);
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  font-weight: 500;
}


/* ============================================================
   Accordion
   ============================================================ */
.accordion {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  margin-bottom: var(--sp-6);
}

.accordion-item {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--duration-fast) var(--ease-out);
}

.accordion-item.open {
  border-color: var(--color-border-strong);
}

.accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--sp-4) var(--sp-5);
  text-align: left;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-out);
}

@media (max-width: 479px) {
  .accordion-trigger {
    padding: var(--sp-3) var(--sp-4);
    font-size: var(--text-sm);
  }
}

.accordion-trigger:hover {
  background: var(--color-bg-muted);
}

.accordion-trigger:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}

.accordion-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-text-tertiary);
  transition: transform var(--duration-normal) var(--ease-out);
}

.accordion-item.open .accordion-icon {
  transform: rotate(180deg);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-slow) var(--ease-out);
}

.accordion-item.open .accordion-panel {
  max-height: 2000px;
}

.accordion-content {
  padding: 0 var(--sp-5) var(--sp-5);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

@media (max-width: 479px) {
  .accordion-content {
    padding: 0 var(--sp-4) var(--sp-4);
  }
}

.accordion-content p {
  margin-bottom: var(--sp-3);
}

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

.accordion-content ul {
  list-style: disc;
  padding-left: var(--sp-5);
  margin-bottom: var(--sp-3);
}

.accordion-content ul li {
  margin-bottom: var(--sp-1);
}

.accordion-content strong {
  color: var(--color-text-primary);
  font-weight: 600;
}


/* ============================================================
   Related Keywords (inside accordion)
   ============================================================ */
.related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
}

@media (min-width: 480px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.related-card {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  background: var(--color-bg-muted);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  border: 1px solid transparent;
}

.related-card:hover {
  background: var(--color-accent-soft);
  border-color: var(--color-accent);
}

.related-card-icon {
  font-size: var(--text-lg);
  flex-shrink: 0;
  margin-top: 1px;
}

.related-card-info {
  flex: 1;
  min-width: 0;
}

.related-card-term {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 2px;
}

.related-card-def {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-type-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  background: var(--color-secondary-soft);
  color: var(--color-secondary);
  margin-left: var(--sp-2);
}


/* ============================================================
   Example blocks (inside accordion)
   ============================================================ */
.example-block {
  background: var(--color-bg-muted);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
  margin-bottom: var(--sp-3);
  border-left: 3px solid var(--color-accent);
}

.example-block:last-child {
  margin-bottom: 0;
}

.example-title {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent-text);
  margin-bottom: var(--sp-2);
}

.example-text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}


/* ============================================================
   Pagination
   ============================================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  margin-top: var(--sp-8);
}

.pagination-btn {
  min-width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  padding: 0 var(--sp-2);
  transition: all var(--duration-fast) var(--ease-out);
}

.pagination-btn:hover:not(:disabled) {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.pagination-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-text-inverse);
}

.pagination-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pagination-ellipsis {
  color: var(--color-text-tertiary);
  font-size: var(--text-sm);
}


/* ============================================================
   Skeleton / Loading
   ============================================================ */
@keyframes skeleton-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.skeleton {
  background: var(--color-bg-muted);
  border-radius: var(--radius-sm);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.skeleton-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.skeleton-line {
  height: 14px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-muted);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.skeleton-line.w-60 { width: 60%; }
.skeleton-line.w-80 { width: 80%; }
.skeleton-line.w-40 { width: 40%; }
.skeleton-line.w-100 { width: 100%; }
.skeleton-line.h-20 { height: 20px; }
.skeleton-line.h-10 { height: 10px; }


/* ============================================================
   Empty / Error States
   ============================================================ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--sp-16) var(--sp-6);
  text-align: center;
}

.empty-state-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-bg-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  margin-bottom: var(--sp-5);
  color: var(--color-text-tertiary);
}

.empty-state-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--sp-2);
}

.empty-state-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  max-width: 360px;
  line-height: 1.5;
}

.empty-state-action {
  margin-top: var(--sp-5);
}


/* ============================================================
   Buttons (generic)
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  min-height: 40px;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-text-inverse);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
}

.btn-secondary {
  background: var(--color-bg-muted);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-border-strong);
  background: var(--color-bg-subtle);
}

.btn-ghost {
  color: var(--color-text-secondary);
}

.btn-ghost:hover {
  background: var(--color-bg-muted);
  color: var(--color-text-primary);
}


/* ============================================================
   Page-level fade-in
   ============================================================ */
@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.view-enter {
  animation: fade-in-up var(--duration-normal) var(--ease-out);
}


/* ============================================================
   Stats bar (home page)
   ============================================================ */
.stats-bar {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  padding: var(--sp-4) var(--sp-5);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--sp-6);
  overflow-x: auto;
}

@media (max-width: 479px) {
  .stats-bar {
    gap: var(--sp-4);
    padding: var(--sp-3) var(--sp-4);
  }
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.stat-value {
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  white-space: nowrap;
}


/* ============================================================
   Utility
   ============================================================ */
.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;
}

.text-accent {
  color: var(--color-accent);
}

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

/* Agent's Note */
.agent-note-block {
  background: rgba(99, 102, 241, 0.08);
  border-left: 3px solid rgba(99, 102, 241, 0.5);
  border-radius: 0 8px 8px 0;
  padding: 1rem 1.25rem;
  font-style: italic;
  color: var(--text-secondary, #b0b8c4);
  line-height: 1.7;
}
.agent-note-block p {
  margin: 0;
}