/* ==========================================================================
   好所在法律新聞閱讀器 - 現代化樣式表 (style.css v2.1)
   ========================================================================== */

:root {
  /* Color Palette - Dark Theme (Default) */
  --bg-main: #0b1120;
  --bg-card: #1e293b;
  --bg-card-hover: #24344d;
  --bg-sidebar: #0f172a;
  --bg-header: rgba(15, 23, 42, 0.92);
  --border-color: #334155;
  --border-light: #1e293b;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-faint: #64748b;
  
  --primary: #38bdf8;
  --primary-hover: #0284c7;
  --primary-bg: rgba(56, 189, 248, 0.12);
  --primary-border: rgba(56, 189, 248, 0.3);
  
  --accent: #818cf8;
  --gold: #fbbf24;
  --gold-bg: rgba(251, 191, 36, 0.12);
  --gold-border: rgba(251, 191, 36, 0.3);
  
  --success: #34d399;
  --success-bg: rgba(52, 211, 153, 0.12);
  --danger: #f87171;
  --danger-bg: rgba(248, 113, 113, 0.12);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.45);
  
  --sidebar-width: 280px;
  --header-height: 60px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --font-family: 'Noto Sans TC', system-ui, -apple-system, sans-serif;
  
  /* Font Size Settings */
  --font-title: 1.12rem;
  --font-body: 0.95rem;
  --font-meta: 0.82rem;
}

[data-theme="light"] {
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-sidebar: #ffffff;
  --bg-header: rgba(255, 255, 255, 0.92);
  --border-color: #cbd5e1;
  --border-light: #e2e8f0;
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-faint: #94a3b8;
  
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --primary-bg: rgba(2, 132, 199, 0.08);
  --primary-border: rgba(2, 132, 199, 0.25);
  
  --accent: #4f46e5;
  --gold: #d97706;
  --gold-bg: rgba(217, 119, 6, 0.08);
  --gold-border: rgba(217, 119, 6, 0.25);
  
  --success: #059669;
  --success-bg: rgba(5, 150, 105, 0.08);
  --danger: #dc2626;
  --danger-bg: rgba(220, 38, 38, 0.08);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
}

/* Sepia / Warm Wood Theme (米色/溫和木質調) */
[data-theme="sepia"] {
  --bg-main: #f5efe6;
  --bg-card: #fdfbf7;
  --bg-card-hover: #f3eae0;
  --bg-sidebar: #eae0d0;
  --bg-header: rgba(234, 224, 208, 0.94);
  --border-color: #d6c7b2;
  --border-light: #e4d7c5;

  --text-main: #382c1e;
  --text-muted: #735e46;
  --text-faint: #9c8469;

  --primary: #b45309;
  --primary-hover: #92400e;
  --primary-bg: rgba(180, 83, 9, 0.12);
  --primary-border: rgba(180, 83, 9, 0.35);

  --accent: #d97706;
  --gold: #b45309;
  --gold-bg: rgba(180, 83, 9, 0.12);
  --gold-border: rgba(180, 83, 9, 0.35);

  --success: #15803d;
  --success-bg: rgba(21, 128, 61, 0.12);
  --danger: #b91c1c;
  --danger-bg: rgba(185, 28, 28, 0.12);

  --shadow-sm: 0 1px 4px rgba(80, 60, 40, 0.08);
  --shadow-md: 0 4px 14px rgba(80, 60, 40, 0.12);
  --shadow-lg: 0 12px 30px rgba(80, 60, 40, 0.16);
}

/* Multi-level Font Size Scales (6 Levels) */
body.font-xs {
  --font-title: 0.92rem;
  --font-body: 0.8rem;
  --font-meta: 0.7rem;
}
body.font-sm {
  --font-title: 1.02rem;
  --font-body: 0.88rem;
  --font-meta: 0.76rem;
}
body.font-md {
  --font-title: 1.15rem;
  --font-body: 0.96rem;
  --font-meta: 0.82rem;
}
body.font-lg {
  --font-title: 1.28rem;
  --font-body: 1.08rem;
  --font-meta: 0.92rem;
}
body.font-xl {
  --font-title: 1.45rem;
  --font-body: 1.22rem;
  --font-meta: 1.04rem;
}
body.font-xxl {
  --font-title: 1.65rem;
  --font-body: 1.38rem;
  --font-meta: 1.18rem;
}

/* ==========================================================================
   Global Scrollbar Styling (Dark/Light/Sepia Seamless)
   ========================================================================== */
::-webkit-scrollbar {
  width: 7px;
  height: 7px;
}
::-webkit-scrollbar-track {
  background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-faint);
}

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

html, body {
  height: 100%;
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ==========================================================================
   Top Header Bar
   ========================================================================== */
.site-header {
  height: var(--header-height);
  background: var(--bg-header);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  z-index: 50;
  box-shadow: var(--shadow-sm);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.sidebar-toggle-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1.1rem;
}

.logo-badge {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-color);
  background: #000000;
  flex-shrink: 0;
}

.logo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.site-title-box h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.site-title-box p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.header-search-container {
  flex: 1;
  max-width: 560px;
  margin: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.search-scope-tabs {
  display: flex;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 2px;
  flex-shrink: 0;
}

.search-scope-btn {
  background: transparent;
  border: none;
  padding: 0.25rem 0.6rem;
  border-radius: 14px;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.search-scope-btn:hover {
  color: var(--text-main);
}

.search-scope-btn.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}

.header-search-input-wrapper {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
}

.header-search-input-wrapper input {
  width: 100%;
  padding: 0.45rem 2rem 0.45rem 2.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  color: var(--text-main);
  font-size: var(--font-body);
  outline: none;
  transition: all 0.2s;
}

.header-search-input-wrapper input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

.header-search-input-wrapper .search-icon {
  position: absolute;
  left: 0.8rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.clear-search-btn {
  position: absolute;
  right: 0.65rem;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 0.2rem;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.clear-search-btn:hover {
  color: var(--text-main);
}

/* Global Search Results Panel */
.global-search-hero {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.25rem;
  margin-bottom: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

.global-results-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  max-width: 1300px;
}

.global-result-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  transition: all 0.18s ease;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  position: relative;
}

.global-result-card:hover {
  border-color: var(--primary);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.global-result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.date-badge-jump {
  background: var(--primary-bg);
  color: var(--primary);
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.78rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  cursor: pointer;
  transition: all 0.15s;
}

.date-badge-jump:hover {
  background: var(--primary);
  color: white;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ==========================================================================
   聯繫楊時綱律師 按鈕 (呼應漫畫網站微光膠囊風格，三主題適配)
   ========================================================================== */
.contact-lawyer-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  padding: 0.38rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.84rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: all 0.2s ease;
  background: rgba(15, 23, 42, 0.8);
  color: #fde68a;
  border: 1px solid rgba(245, 158, 11, 0.35);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.contact-lawyer-btn:hover {
  background: rgba(245, 158, 11, 0.15);
  border-color: rgba(245, 158, 11, 0.75);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.2);
  transform: translateY(-1px);
}

.contact-lawyer-btn:active {
  transform: translateY(0);
}

.contact-lawyer-btn .contact-icon {
  font-size: 0.95rem;
  line-height: 1;
}

/* 淺色主題 (Light) */
[data-theme="light"] .contact-lawyer-btn {
  background: #ffffff;
  color: #b45309;
  border: 1px solid rgba(217, 119, 6, 0.35);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .contact-lawyer-btn:hover {
  background: rgba(245, 158, 11, 0.08);
  border-color: #d97706;
  color: #78350f;
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.15);
}

/* 米色主題 (Sepia) */
[data-theme="sepia"] .contact-lawyer-btn {
  background: #eae0d0;
  color: #92400e;
  border: 1px solid rgba(180, 83, 9, 0.35);
  box-shadow: 0 2px 6px rgba(80, 60, 40, 0.08);
}

[data-theme="sepia"] .contact-lawyer-btn:hover {
  background: rgba(180, 83, 9, 0.15);
  border-color: #b45309;
  color: #78350f;
}

.btn-icon {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s;
  font-size: 0.95rem;
}

.btn-icon:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.font-size-group {
  display: flex;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.font-size-group button {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all 0.15s;
}

.font-size-group button.active,
.font-size-group button:hover {
  background: var(--primary-bg);
  color: var(--primary);
}

/* ==========================================================================
   Main App Layout
   ========================================================================== */
.app-layout {
  display: flex;
  flex: 1;
  height: calc(100vh - var(--header-height));
  overflow: hidden;
  position: relative;
}

/* ==========================================================================
   Left Sidebar - Tree Hierarchy
   ========================================================================== */
.sidebar-panel {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 40;
}

.sidebar-header {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.sidebar-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.sidebar-badge {
  font-size: 0.75rem;
  padding: 0.15rem 0.45rem;
  background: var(--primary-bg);
  color: var(--primary);
  border-radius: 12px;
  font-weight: 600;
}

.sidebar-filter-input {
  width: 100%;
  padding: 0.35rem 0.65rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 0.82rem;
  outline: none;
}

.sidebar-filter-input:focus {
  border-color: var(--primary);
}

.tree-container {
  flex: 1;
  overflow-y: auto;
  padding: 0.6rem 0.5rem;
}

/* Tree Nodes */
.tree-year-node, .tree-month-node {
  margin-bottom: 0.25rem;
}

.tree-node-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.45rem 0.6rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  user-select: none;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  transition: background 0.15s;
}

.tree-node-header:hover {
  background: var(--bg-card-hover);
}

.tree-node-left {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.tree-arrow {
  display: inline-block;
  transition: transform 0.2s ease;
  font-size: 0.7rem;
  color: var(--text-muted);
  width: 12px;
}

.tree-node-header.open .tree-arrow {
  transform: rotate(90deg);
}

.tree-count-pill {
  font-size: 0.72rem;
  color: var(--text-muted);
  background: var(--bg-card);
  padding: 0.1rem 0.4rem;
  border-radius: 10px;
  font-weight: normal;
}

.tree-month-list {
  padding-left: 0.9rem;
  display: none;
}
.tree-node-header.open + .tree-month-list {
  display: block;
}

.tree-day-list {
  padding-left: 0.9rem;
  display: none;
}
.tree-node-header.open + .tree-day-list {
  display: block;
}

.tree-day-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.42rem 0.6rem;
  margin: 0.15rem 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.83rem;
  color: var(--text-muted);
  transition: all 0.15s;
  text-decoration: none;
}

.tree-day-item:hover {
  background: var(--bg-card-hover);
  color: var(--text-main);
}

.tree-day-item.active {
  background: var(--primary-bg);
  color: var(--primary);
  font-weight: 600;
  border-left: 3px solid var(--primary);
}

.tree-day-badge {
  font-size: 0.7rem;
  padding: 0.05rem 0.35rem;
  border-radius: 8px;
  background: rgba(148, 163, 184, 0.15);
  color: var(--text-muted);
}
.tree-day-item.active .tree-day-badge {
  background: var(--primary);
  color: white;
}

/* ==========================================================================
   Main Content Reader
   ========================================================================== */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  background: var(--bg-main);
  padding: 0 2rem 2rem 2rem;
  position: relative;
  scroll-behavior: smooth;
}

/* Sticky Top Control Wrapper (Hero + Category Chips) - 100% Opaque Solid Cover */
.sticky-top-control {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg-main); /* Solid dark/light background completely covers scrolled text */
  margin: 0 -2rem 1.5rem -2rem; /* Extend full width to touch sidebar and right edge */
  padding: 0.85rem 2rem 0.85rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
}

.reader-hero {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.6rem 1.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

.hero-left {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.hero-left h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0;
  white-space: nowrap;
}

.hero-meta {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: var(--font-meta);
  color: var(--text-muted);
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.18rem 0.55rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.78rem;
  background: var(--primary-bg);
  color: var(--primary);
  white-space: nowrap;
}

.hero-actions {
  display: flex;
  gap: 0.5rem;
}

.btn-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  background: var(--bg-main);
  color: var(--text-main);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-pill:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ==========================================================================
   Category Chips Bar (Wrap Mode & Color Coordinated)
   ========================================================================== */
.category-chips-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.6rem 1rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.category-chips-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
}

.category-chips-bar {
  display: flex;
  flex-wrap: wrap; /* Auto-wrap into rows, NO horizontal scrollbar! */
  align-items: center;
  gap: 0.45rem;
}

.chip-btn {
  padding: 0.28rem 0.7rem;
  border-radius: 16px;
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.18s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  user-select: none;
  font-weight: 500;
}

.chip-color-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.chip-btn:hover {
  border-color: var(--chip-color, var(--primary));
  color: var(--chip-color, var(--primary));
  background: var(--chip-bg, var(--primary-bg));
  transform: translateY(-1px);
}

.chip-btn.active {
  background: var(--chip-color, var(--primary)) !important;
  color: #ffffff !important;
  border-color: var(--chip-color, var(--primary)) !important;
  font-weight: 600;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.chip-btn.active .chip-color-dot {
  background-color: #ffffff !important;
}

/* ==========================================================================
   Category Sections & Coordinated News Cards
   ========================================================================== */
.news-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 1300px;
}

.category-section {
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
  scroll-margin-top: 1.2rem;
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
}

.category-section.jump-highlight {
  animation: pulseSection 1.5s ease-out;
}

@keyframes pulseSection {
  0% {
    box-shadow: 0 0 0 0 var(--section-color, var(--primary));
  }
  25% {
    box-shadow: 0 0 0 6px var(--section-color, var(--primary));
  }
  100% {
    box-shadow: 0 0 0 0 transparent;
  }
}

.category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--section-color, var(--border-color));
}

.category-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--section-color, var(--gold));
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.category-count {
  font-size: 0.8rem;
  padding: 0.15rem 0.6rem;
  border-radius: 12px;
  background: var(--section-bg, var(--gold-bg));
  color: var(--section-color, var(--gold));
  border: 1px solid var(--section-border, var(--gold-border));
  font-weight: 600;
}

.articles-grid {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--section-color, var(--primary)); /* Left color accent! */
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.article-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--section-border, var(--primary-border));
  border-left-color: var(--section-color, var(--primary));
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.article-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.article-title-link {
  color: var(--text-main);
  text-decoration: none;
  font-size: var(--font-title);
  font-weight: 600;
  line-height: 1.45;
  display: flex;
  align-items: flex-start;
  gap: 0.45rem;
  flex: 1;
}

.article-title-link:hover {
  color: var(--section-color, var(--primary));
}

.article-bullet {
  color: var(--section-color, var(--primary));
  font-weight: 700;
  flex-shrink: 0;
}

.article-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  margin-top: 0.2rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-light);
}

.meta-tags-box {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.charge-tag {
  font-size: var(--font-meta);
  padding: 0.22rem 0.65rem;
  border-radius: 6px;
  background: var(--section-bg, var(--primary-bg));
  color: var(--section-color, var(--primary));
  border: 1px solid var(--section-border, var(--primary-border));
  font-weight: 500;
}

.source-tag {
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 6px;
  background: var(--border-light);
  color: var(--text-muted);
}

.article-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.action-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.25rem 0.55rem;
  border-radius: 6px;
  font-size: 0.78rem;
  cursor: pointer;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.action-btn:hover {
  border-color: var(--section-color, var(--primary));
  color: var(--section-color, var(--primary));
}

/* Empty State / Loading State */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 0.75rem;
  display: block;
}

/* Toast Notifications */
.toast-notice {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #1e293b;
  color: #f8fafc;
  border: 1px solid #38bdf8;
  padding: 0.75rem 1.25rem;
  border-radius: 10px;
  font-size: 0.9rem;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: all 0.25s ease;
}

.toast-notice.show {
  opacity: 1;
  transform: translateY(0);
}

/* Raw Text Modal View */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1.5rem;
}

.modal-overlay.open {
  display: flex;
}

.modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 850px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-body {
  flex: 1;
  padding: 1rem 1.5rem;
  overflow-y: auto;
}

.modal-textarea {
  width: 100%;
  height: 50vh;
  background: var(--bg-main);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  font-family: Consolas, monospace;
  font-size: 0.9rem;
  line-height: 1.6;
  resize: vertical;
  outline: none;
}

/* Sidebar Footer Branding */
.sidebar-footer {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--border-color);
  background: var(--bg-sidebar);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  align-items: center;
  text-align: center;
  flex-shrink: 0;
}

.sidebar-footer-text {
  font-size: 0.76rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.sidebar-footer-text strong {
  color: var(--text-main);
  font-weight: 600;
}

.sidebar-info-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-muted);
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.sidebar-info-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-bg);
}

/* About & Disclaimer Modal Styles */
.about-modal-body {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  padding: 1.25rem 1.5rem;
  font-size: 0.88rem;
}

.about-hero {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border-color);
}

.about-hero-icon {
  font-size: 1.8rem;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(56, 189, 248, 0.3);
  flex-shrink: 0;
}

.about-section {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.about-section h5 {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin: 0;
}

.about-section p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

.about-author-box {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.15rem;
  margin-top: 0.25rem;
}

.about-author-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.author-badge {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.05em;
}

.author-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 0.15rem;
}

.author-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.author-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.author-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  border-radius: 18px;
  font-size: 0.78rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--primary);
  color: var(--primary);
  background: var(--primary-bg);
  transition: all 0.18s ease;
}

.author-link-btn:hover {
  background: var(--primary);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.author-link-btn.fb {
  border-color: #1877f2;
  color: #1877f2;
  background: rgba(24, 119, 242, 0.08);
}

.author-link-btn.fb:hover {
  background: #1877f2;
  color: #ffffff;
}

/* ==========================================================================
   Responsive Adaptations (Mobile & Tablet)
   ========================================================================== */
@media (max-width: 900px) {
  .sidebar-toggle-btn {
    display: inline-block;
  }
  
  .sidebar-panel {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    transform: translateX(-100%);
    box-shadow: var(--shadow-lg);
    z-index: 60;
  }
  
  .sidebar-panel.open {
    transform: translateX(0);
  }
}

/* Mobile Screens (<= 768px): Scheme A - 2-Row Adaptive Header + Ultra-compact Sticky + Chips */
@media (max-width: 768px) {
  :root {
    --header-height: 94px;
  }

  /* 1. Header Optimization: Rock-Solid 2-Row CSS Grid Layout */
  .site-header {
    display: grid !important;
    grid-template-columns: 1fr auto !important;
    grid-template-rows: auto auto !important;
    grid-template-areas:
      "brand actions"
      "search search" !important;
    row-gap: 0.35rem !important;
    column-gap: 0.5rem !important;
    height: auto !important;
    min-height: 88px !important;
    padding: 0.45rem 0.65rem !important;
    align-items: center !important;
  }

  .header-left {
    grid-area: brand !important;
    display: flex !important;
    align-items: center !important;
    gap: 0.45rem !important;
    min-width: 0 !important;
    overflow: hidden !important;
  }

  .sidebar-toggle-btn {
    padding: 0.25rem 0.45rem;
    font-size: 1.05rem;
    border-radius: 6px;
    flex-shrink: 0;
  }

  .logo-badge {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    flex-shrink: 0;
  }

  .site-title-box {
    min-width: 0;
    overflow: hidden;
  }

  .site-title-box h1 {
    font-size: 0.95rem;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .site-title-box p {
    display: none !important; /* Hide subtitle on mobile */
  }

  .header-actions {
    grid-area: actions !important;
    display: flex !important;
    align-items: center !important;
    gap: 0.35rem !important;
    flex-shrink: 0 !important;
  }

  .font-size-group {
    display: none !important; /* Hide font size buttons in narrow header */
  }

  .btn-icon {
    width: 32px;
    height: 32px;
    font-size: 0.9rem;
    border-radius: 6px;
    flex-shrink: 0;
  }

  .contact-lawyer-btn {
    padding: 0.22rem 0.55rem;
    font-size: 0.76rem;
    border-radius: 12px;
    height: 32px;
  }

  /* Row 2: 100% Full-Width Search & Scope Bar */
  .header-search-container {
    grid-area: search !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
    display: flex !important;
    align-items: center !important;
    gap: 0.45rem !important;
  }

  .search-scope-tabs {
    flex-shrink: 0;
    padding: 2px;
    border-radius: 16px;
  }

  .search-scope-btn {
    padding: 0.22rem 0.52rem;
    font-size: 0.72rem;
    border-radius: 12px;
  }

  .header-search-input-wrapper {
    flex: 1;
    min-width: 0;
    position: relative;
    display: flex;
    align-items: center;
  }

  .header-search-input-wrapper input {
    width: 100%;
    font-size: 0.82rem;
    padding: 0.28rem 1.8rem 0.28rem 1.8rem;
    height: 33px;
    border-radius: 16px;
  }

  .header-search-input-wrapper .search-icon {
    left: 0.65rem;
    font-size: 0.82rem;
  }

  .clear-search-btn {
    right: 0.55rem;
    font-size: 0.8rem;
  }

  /* 2. Main Content & Ultra-compact Sticky Top Control */
  .main-content {
    padding: 0 0.65rem 1.5rem 0.65rem;
  }

  .sticky-top-control {
    margin: 0 -0.65rem 0.75rem -0.65rem;
    padding: 0.4rem 0.65rem;
    gap: 0.3rem;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
  }

  /* Top Hero Info: Ultra-flat Single Row */
  .reader-hero {
    padding: 0.35rem 0.6rem;
    gap: 0.3rem;
  }

  .hero-left {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.3rem;
  }

  .hero-left h2 {
    font-size: 0.9rem;
    white-space: nowrap;
  }

  .hero-meta {
    gap: 0.25rem;
  }

  .hero-pill {
    font-size: 0.68rem;
    padding: 0.08rem 0.35rem;
  }

  .hero-actions {
    display: none; /* Hide duplicate copy/raw buttons from sticky header on mobile to maximize viewport */
  }

  /* 3. Category Chips Bar: Single Horizontal Scrollable Carousel (Height 38px) */
  .category-chips-wrapper {
    padding: 0.3rem 0.45rem;
    gap: 0;
    border-radius: var(--radius-sm);
  }

  .category-chips-header {
    display: none; /* Hide "分類快速跳轉" header on mobile */
  }

  .category-chips-bar {
    display: flex;
    flex-wrap: nowrap; /* Single line horizontal scroll! */
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    gap: 0.35rem;
    padding: 2px 0;
    scrollbar-width: none; /* Firefox */
  }

  .category-chips-bar::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
  }

  .chip-btn {
    flex-shrink: 0; /* Keep chips from squishing */
    padding: 0.22rem 0.55rem;
    font-size: 0.74rem;
    white-space: nowrap;
    border-radius: 12px;
  }

  /* 4. Article Cards Compact Spacing on Mobile */
  .article-card {
    padding: 0.85rem 0.85rem;
    margin-bottom: 0.65rem;
  }

  .article-title-link {
    font-size: 0.95rem;
    line-height: 1.45;
  }

  .article-card-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.45rem;
  }

  .article-actions {
    width: 100%;
    justify-content: flex-end;
  }
}

/* 小尺寸手機自適應文字切換 */
@media (max-width: 480px) {
  .contact-lawyer-btn .contact-text-full {
    display: none;
  }
  .contact-lawyer-btn .contact-text-short {
    display: inline;
  }
}

@media (min-width: 481px) {
  .contact-lawyer-btn .contact-text-short {
    display: none;
  }
}