/* ─────────────────────────────────────────────────────────────
   SynIQ 群眾智慧預測平台 — 全域樣式
   深色科技感 + 玻璃擬態設計
───────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600&display=swap');

:root {
  /* 主色調 */
  --accent: #6C63FF;
  --accent-light: #8B85FF;
  --accent-dark: #4A44CC;
  --accent-glow: rgba(108, 99, 255, 0.35);

  /* 背景層次 */
  --bg-base: #0B0C10;
  --bg-surface: #13141A;
  --bg-card: rgba(255, 255, 255, 0.05);
  --bg-card-hover: rgba(255, 255, 255, 0.09);

  /* 文字 */
  --text-primary: #F0F0F5;
  --text-secondary: #9A9AB0;
  --text-muted: #5A5A70;

  /* 狀態色 */
  --success: #22D3A4;
  --success-bg: rgba(34, 211, 164, 0.12);
  --error: #FF6B6B;
  --error-bg: rgba(255, 107, 107, 0.12);
  --warning: #FFB347;
  --warning-bg: rgba(255, 179, 71, 0.12);
  --info: #60BFFF;
  --info-bg: rgba(96, 191, 255, 0.12);

  /* 玻璃效果 */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --blur: blur(16px);

  /* 陰影 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 32px var(--accent-glow);

  /* 圓角 */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* 動畫 */
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* 背景粒子裝飾 */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(108, 99, 255, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(34, 211, 164, 0.06) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* ── 導覽列 ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 64px;
  background: rgba(11, 12, 16, 0.85);
  backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--glass-border);
}

.navbar-brand {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--accent-light), var(--success));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-decoration: none;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  object-fit: cover;
  cursor: pointer;
  transition: var(--transition);
}

.user-avatar:hover {
  box-shadow: 0 0 12px var(--accent-glow);
}

/* ── 主要容器 ── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── 卡片 ── */
.card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: var(--blur);
  padding: 1.5rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(108, 99, 255, 0.3);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: var(--transition);
}

.card:hover::before {
  opacity: 1;
}

/* ── 按鈕 ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: white;
  box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  box-shadow: 0 6px 24px var(--accent-glow);
  transform: translateY(-1px);
}

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

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

.btn-success {
  background: linear-gradient(135deg, var(--success), #1aa882);
  color: #0B0C10;
}

.btn-danger {
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid var(--error);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
  border-radius: var(--radius-lg);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ── 徽章 ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-accent {
  background: rgba(108, 99, 255, 0.2);
  color: var(--accent-light);
}

.badge-success {
  background: var(--success-bg);
  color: var(--success);
}

.badge-warning {
  background: var(--warning-bg);
  color: var(--warning);
}

.badge-error {
  background: var(--error-bg);
  color: var(--error);
}

.badge-info {
  background: var(--info-bg);
  color: var(--info);
}

.badge-muted {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
}

/* ── 類別標籤 ── */
.category-tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
  border: 1px solid;
}

.cat-財經 {
  color: #FFD700;
  border-color: rgba(255, 215, 0, 0.4);
  background: rgba(255, 215, 0, 0.1);
}

.cat-影視 {
  color: #FF79C6;
  border-color: rgba(255, 121, 198, 0.4);
  background: rgba(255, 121, 198, 0.1);
}

.cat-科技 {
  color: #60BFFF;
  border-color: rgba(96, 191, 255, 0.4);
  background: rgba(96, 191, 255, 0.1);
}

.cat-時事 {
  color: #FF9D5C;
  border-color: rgba(255, 157, 92, 0.4);
  background: rgba(255, 157, 92, 0.1);
}

.cat-體育 {
  color: #22D3A4;
  border-color: rgba(34, 211, 164, 0.4);
  background: rgba(34, 211, 164, 0.1);
}

.cat-生活 {
  color: #C4A8FF;
  border-color: rgba(196, 168, 255, 0.4);
  background: rgba(196, 168, 255, 0.1);
}

.cat-其他 {
  color: var(--text-secondary);
  border-color: var(--glass-border);
  background: var(--glass-bg);
}

/* ── 標題 ── */
h1,
h2,
h3,
h4 {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  letter-spacing: -0.3px;
}

h1 {
  font-size: 2.2rem;
}

h2 {
  font-size: 1.6rem;
}

h3 {
  font-size: 1.2rem;
}

/* ── 表單 ── */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--accent);
  background: rgba(108, 99, 255, 0.08);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-control::placeholder {
  color: var(--text-muted);
}

select.form-control {
  cursor: pointer;
  /* 強制覆蓋 Windows/Mac 瀏覽器的原生 select 樣式 */
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-color: rgba(255, 255, 255, 0.06) !important;
  color: var(--text-primary) !important;
  /* 自訂下拉箭頭（SVG 嵌入，配合深色主題）*/
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%239A9AB0' d='M6 8L0 0h12z'/%3E%3C/svg%3E") !important;
  background-repeat: no-repeat !important;
  background-position: right 14px center !important;
  background-size: 10px !important;
  padding-right: 36px !important;
}

/* select 內的 option 也要深色（Firefox 用）*/
select.form-control option {
  background-color: #1c1d25;
  color: var(--text-primary);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

/* ── 排行榜表格 ── */
.rank-table {
  width: 100%;
  border-collapse: collapse;
}

.rank-table th,
.rank-table td {
  padding: 14px 16px;
  text-align: left;
}

.rank-table th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--glass-border);
}

.rank-table tr:not(:last-child) td {
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.rank-table tbody tr {
  transition: var(--transition);
}

.rank-table tbody tr:hover td {
  background: var(--bg-card);
}

.rank-num {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 1.1rem;
}

.rank-1 .rank-num {
  color: #FFD700;
}

.rank-2 .rank-num {
  color: #C0C0C0;
}

.rank-3 .rank-num {
  color: #CD7F32;
}

/* ── 頁面區塊 ── */
.page-header {
  padding: 2.5rem 0 1.5rem;
}

.page-title {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 2rem;
}

.page-subtitle {
  color: var(--text-secondary);
  margin-top: 6px;
}

.section {
  padding: 2rem 0;
}

.section-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--glass-border);
}

/* ── 進度條 ── */
.progress {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 100px;
  height: 6px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  border-radius: 100px;
  background: linear-gradient(90deg, var(--accent), var(--success));
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── 使用者卡片 ── */
.user-card {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.user-card-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--glass-border);
  object-fit: cover;
  flex-shrink: 0;
}

.user-card-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.user-card-title {
  font-size: 0.78rem;
  color: var(--accent-light);
  font-weight: 500;
}

/* ── 選項按鈕（投票用）── */
.option-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 14px 18px;
  background: var(--glass-bg);
  border: 2px solid var(--glass-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  margin-bottom: 10px;
  text-align: left;
  position: relative;
  overflow: hidden;
}

.option-btn:hover {
  border-color: var(--accent);
  background: rgba(108, 99, 255, 0.1);
}

.option-btn.selected {
  border-color: var(--accent);
  background: rgba(108, 99, 255, 0.2);
  box-shadow: 0 0 16px rgba(108, 99, 255, 0.2);
}

.option-btn.correct {
  border-color: var(--success);
  background: var(--success-bg);
}

.option-btn.wrong {
  border-color: var(--error);
  background: var(--error-bg);
  opacity: 0.7;
}

.option-bar {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  background: rgba(108, 99, 255, 0.12);
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 0;
}

.option-content {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

/* ── 統計數字 ── */
.stat-card {
  text-align: center;
  padding: 1.5rem;
}

.stat-value {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 2.2rem;
  letter-spacing: -1px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
}

/* ── 提示 Toast ── */
.toast-container {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 18px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 500;
  backdrop-filter: var(--blur);
  animation: slideIn 0.3s ease;
  max-width: 320px;
}

.toast-success {
  background: rgba(34, 211, 164, 0.2);
  border: 1px solid rgba(34, 211, 164, 0.4);
  color: var(--success);
}

.toast-error {
  background: rgba(255, 107, 107, 0.2);
  border: 1px solid rgba(255, 107, 107, 0.4);
  color: var(--error);
}

.toast-info {
  background: rgba(96, 191, 255, 0.2);
  border: 1px solid rgba(96, 191, 255, 0.4);
  color: var(--info);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(20px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ── 載入動畫 ── */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(108, 99, 255, 0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 2rem auto;
}

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

.loading-text {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 8px;
}

/* ── 空狀態 ── */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.empty-state-text {
  font-size: 1rem;
}

/* ── 分頁 ── */
.pagination {
  display: flex;
  gap: 6px;
  justify-content: center;
  margin-top: 1.5rem;
}

.page-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.85rem;
  transition: var(--transition);
}

.page-btn:hover,
.page-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

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

/* ── 分隔線 ── */
.divider {
  height: 1px;
  background: var(--glass-border);
  margin: 1.5rem 0;
}

/* ── 網格 ── */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

/* ── 題目卡片 ── */
.topic-card {
  cursor: pointer;
  text-decoration: none;
  display: block;
  color: inherit;
}

.topic-card:hover {
  text-decoration: none;
}

.topic-card .topic-title {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 8px;
  line-height: 1.4;
}

.topic-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.topic-countdown {
  color: var(--warning);
  font-weight: 600;
}

.topic-expired {
  color: var(--error);
  font-weight: 600;
}

/* ── 個人雷達圖容器 ── */
#radar-chart-container {
  max-width: 400px;
  margin: 0 auto;
}

/* ── Tabs ── */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--glass-border);
  margin-bottom: 1.5rem;
}

.tab {
  padding: 10px 18px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  transition: var(--transition);
  margin-bottom: -1px;
}

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

.tab.active {
  color: var(--accent-light);
  border-bottom-color: var(--accent);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* ── 搜尋欄 ── */
.search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  transition: var(--transition);
}

.search-bar:focus-within {
  border-color: var(--accent);
}

.search-bar input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 0.9rem;
}

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

/* ── 響應式 ── */
@media (max-width: 768px) {
  .navbar {
    padding: 0 1rem;
  }

  .navbar-nav {
    display: none;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 1.6rem;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .container {
    padding: 0 1rem;
  }
}

@media (min-width: 769px) {
  .mobile-menu-btn {
    display: none;
  }
}

/* ── 下拉選單 ── */
.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  background: var(--bg-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  min-width: 180px;
  padding: 6px;
  z-index: 200;
  box-shadow: var(--shadow-md);
  display: none;
}

.dropdown.open .dropdown-menu {
  display: block;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition);
}

.dropdown-item:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

/* ── 頁腳 ── */
footer {
  margin-top: 4rem;
  padding: 2rem;
  border-top: 1px solid var(--glass-border);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}