/**
 * MetroPulse — design tokens（都會運輸 × 資料敘事）
 * 淺色：頁首頁、站點詳情｜深色：body.theme-analytics
 */

:root {
  --mp-font-sans: "Noto Sans TC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mp-font-display: "Outfit", "Noto Sans TC", system-ui, sans-serif;

  --mp-bg-page: #eceff4;
  --mp-bg-elevated: #f8fafc;
  --mp-surface: #ffffff;
  --mp-border: #e2e8f0;
  --mp-border-strong: #cbd5e1;
  --mp-text: #0f172a;
  --mp-text-muted: #475569;
  --mp-text-soft: #64748b;

  --mp-accent: #0070bd;
  --mp-accent-hover: #005a9a;
  --mp-accent-soft: rgba(0, 112, 189, 0.09);

  /* 與推薦分數四維度一致（圖表、說明、卡片） */
  --mp-score-pr: #0070bd;
  --mp-score-flow: #1a803f;
  --mp-score-pref: #6d28d9;
  --mp-score-cost: #e3002c;

  --mp-radius-md: 0.75rem;
  --mp-radius-lg: 1rem;
  --mp-radius-xl: 1.25rem;
  --mp-space-section: clamp(1.25rem, 4vw, 2rem);

  --mp-shadow-card:
    0 1px 2px rgba(15, 23, 42, 0.04),
    0 8px 28px rgba(15, 23, 42, 0.07);
  --mp-transition-fast: 180ms ease;
}

/* ═════════ 深色：旅運量分析（同一品牌、儀表板語境）═════════ */
.theme-analytics {
  --mp-bg-page: #0f172a;
  --mp-bg-elevated: #1e293b;
  --mp-surface: #1e293b;
  --mp-border: #334155;
  --mp-border-strong: #475569;
  --mp-text: #f1f5f9;
  --mp-text-muted: #cbd5e1;
  --mp-text-soft: #94a3b8;

  --mp-accent: #38bdf8;
  --mp-accent-hover: #7dd3fc;
  --mp-accent-soft: rgba(56, 189, 248, 0.14);

  --mp-shadow-card:
    0 1px 0 rgba(255, 255, 255, 0.04) inset,
    0 6px 24px rgba(0, 0, 0, 0.35);
}

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

.mp-font {
  font-family: var(--mp-font-sans);
}

.mp-display {
  font-family: var(--mp-font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.mp-page {
  min-height: 100vh;
  background-color: var(--mp-bg-page);
  color: var(--mp-text);
  background-image: radial-gradient(
    ellipse 100% 60% at 50% -15%,
    rgba(0, 112, 189, 0.08),
    transparent 52%
  );
}

.theme-analytics.mp-page-analytics-bg {
  background-image: radial-gradient(
    ellipse 80% 50% at 50% -10%,
    rgba(56, 189, 248, 0.08),
    transparent 50%
  );
}

.mp-h1 {
  font-family: var(--mp-font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  letter-spacing: -0.025em;
  color: var(--mp-text);
  line-height: 1.15;
}

.mp-lede {
  color: var(--mp-text-soft);
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  line-height: 1.65;
  max-width: 40rem;
}

/* ═════════ 版面元件 ═════════ */
.mp-card {
  background: var(--mp-surface);
  border: 1px solid var(--mp-border);
  border-radius: var(--mp-radius-xl);
  box-shadow: var(--mp-shadow-card);
}

.mp-card-soft {
  background: linear-gradient(
      135deg,
      var(--mp-accent-soft) 0%,
      var(--mp-surface) 48%
    ),
    var(--mp-surface);
  border: 1px solid var(--mp-border);
  border-radius: var(--mp-radius-xl);
  box-shadow: var(--mp-shadow-card);
}

.theme-analytics .mp-card-soft {
  background: linear-gradient(
      145deg,
      var(--mp-accent-soft) 0%,
      var(--mp-surface) 55%
    ),
    var(--mp-surface);
}

.mp-section-heading {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--mp-text-soft);
}

.mp-label-row {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--mp-text-muted);
}

/* ═════════ 導覽（淺／深共用結構）═════════ */
.mp-nav-inner {
  max-width: 72rem;
  margin-left: auto;
  margin-right: auto;
}

.mp-nav-brand-sub {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--mp-text-soft);
}

.mp-nav-links a {
  text-decoration: none;
  transition: color var(--mp-transition-fast);
}

.mp-nav-links a:focus-visible {
  outline: 2px solid var(--mp-accent);
  outline-offset: 4px;
  border-radius: 4px;
}

.mp-nav-pill-active {
  color: var(--mp-accent);
  font-weight: 600;
}

/* ═════════ 按鈕 ═════════ */
.mp-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.75rem 1.25rem;
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
  border: none;
  border-radius: var(--mp-radius-lg);
  cursor: pointer;
  background: linear-gradient(
    145deg,
    var(--mp-score-flow) 0%,
    #0d5c2f 42%,
    var(--mp-accent) 100%
  );
  box-shadow: 0 4px 14px rgba(0, 112, 189, 0.35);
  transition:
    transform var(--mp-transition-fast),
    box-shadow var(--mp-transition-fast);
}

.mp-btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(0, 112, 189, 0.4);
}

.mp-btn-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.mp-btn-primary:focus-visible {
  outline: 3px solid var(--mp-accent);
  outline-offset: 3px;
}

.theme-analytics .mp-btn-primary {
  box-shadow: 0 4px 16px rgba(56, 189, 248, 0.25);
}

.theme-analytics .mp-btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.4rem 1.1rem;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--mp-text);
  background: var(--mp-bg-elevated);
  border: 1px solid var(--mp-border-strong);
  border-radius: var(--mp-radius-md);
  cursor: pointer;
  transition: background var(--mp-transition-fast);
}

.theme-analytics .mp-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.06);
}

.theme-analytics .tab-btn:focus-visible,
.theme-analytics #btn-load:focus-visible,
.theme-analytics #trend-station:focus-visible {
  outline: 2px solid var(--mp-accent);
  outline-offset: 2px;
}

/* 詳情／次級 CTA（淺） */
.mp-btn-cta-soft {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 650;
  color: var(--mp-surface);
  text-decoration: none;
  border-radius: var(--mp-radius-md);
  background: linear-gradient(
    135deg,
    var(--mp-accent),
    color-mix(in srgb, var(--mp-score-pref) 75%, var(--mp-accent))
  );
  transition: box-shadow var(--mp-transition-fast);
}

.mp-btn-cta-soft:hover {
  box-shadow: 0 4px 14px rgba(0, 112, 189, 0.35);
}

.mp-btn-cta-soft:focus-visible {
  outline: 3px solid var(--mp-accent);
  outline-offset: 2px;
}

/* ═════════ 表單═════════ */
.mp-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--mp-border-strong);
  border-radius: var(--mp-radius-lg);
  background: var(--mp-surface);
  color: var(--mp-text);
  transition:
    border-color var(--mp-transition-fast),
    box-shadow var(--mp-transition-fast);
}

.mp-input::placeholder {
  color: var(--mp-text-soft);
}

.mp-input:focus {
  outline: none;
  border-color: var(--mp-accent);
  box-shadow: 0 0 0 4px var(--mp-accent-soft);
}

.mp-input:focus-visible {
  outline: none;
}

/* ═════════ 選項卡片（時段／偏好）═════════ */
.option-card {
  transition:
    transform var(--mp-transition-fast),
    border-color var(--mp-transition-fast),
    background-color var(--mp-transition-fast),
    box-shadow var(--mp-transition-fast);
  cursor: pointer;
  border-radius: var(--mp-radius-lg) !important;
  border-width: 2px;
  border-color: var(--mp-border-strong) !important;
  background-color: var(--mp-surface);
}

.option-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.08);
}

.option-card:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 3px var(--mp-accent-soft),
    0 0 0 5px var(--mp-accent);
}

.option-card.selected {
  border-color: var(--mp-accent) !important;
  background-color: var(--mp-accent-soft) !important;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--mp-accent) 35%, transparent);
}

.mp-sticky-submit-wrap {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 42;
  padding: 1rem;
  padding-bottom: max(1rem, env(safe-area-inset-bottom, 16px));
  background: linear-gradient(
    to top,
    color-mix(in srgb, var(--mp-bg-page) 94%, transparent) 40%,
    transparent
  );
  pointer-events: none;
}

.mp-sticky-submit-wrap .mp-btn-primary {
  pointer-events: auto;
}

@media (min-width: 1024px) {
  .mp-sticky-submit-wrap {
    display: none;
  }
}

/* ═════════ 分數維度小色票 ═════════ */
.mp-chip-pr {
  color: var(--mp-score-pr);
}
.mp-chip-flow {
  color: var(--mp-score-flow);
}
.mp-chip-pref {
  color: var(--mp-score-pref);
}
.mp-chip-cost {
  color: var(--mp-score-cost);
}

.mp-dot-pr {
  background: var(--mp-score-pr);
}
.mp-dot-flow {
  background: var(--mp-score-flow);
}
.mp-dot-pref {
  background: var(--mp-score-pref);
}
.mp-dot-cost {
  background: var(--mp-score-cost);
}

/* ═════════ 動畫（首頁）═════════ */
@keyframes mp-fade-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: mp-fade-up 0.5s ease-out forwards;
}

.fade-in-up-delay-1 {
  animation-delay: 0.08s;
  opacity: 0;
}
.fade-in-up-delay-2 {
  animation-delay: 0.16s;
  opacity: 0;
}
.fade-in-up-delay-3 {
  animation-delay: 0.24s;
  opacity: 0;
}
.fade-in-up-delay-4 {
  animation-delay: 0.32s;
  opacity: 0;
}
.fade-in-up-delay-5 {
  animation-delay: 0.4s;
  opacity: 0;
}

.line-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

.score-bar {
  height: 8px;
  border-radius: 4px;
  transition: width 0.8s ease-out;
}

.spinner {
  border: 3px solid color-mix(in srgb, var(--mp-accent) 22%, transparent);
  border-top: 3px solid var(--mp-accent);
  border-radius: 50%;
  width: 24px;
  height: 24px;
  animation: spin 0.85s linear infinite;
}

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

.rec-card {
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease;
  border-left: 4px solid transparent;
}

.rec-card:hover {
  transform: translateX(4px);
  box-shadow: var(--mp-shadow-card);
}

.station-dropdown {
  max-height: 280px;
  overflow-y: auto;
  border-radius: var(--mp-radius-lg);
}

.station-dropdown::-webkit-scrollbar {
  width: 6px;
}
.station-dropdown::-webkit-scrollbar-thumb {
  background-color: var(--mp-border-strong);
  border-radius: 3px;
}

/* ═════════ Analytics 區塊（沿用 .card 類名）═════════ */
.theme-analytics .mp-analytics-card,
.theme-analytics .card {
  background: var(--mp-surface);
  border: 1px solid var(--mp-border);
  border-radius: var(--mp-radius-lg);
  box-shadow: var(--mp-shadow-card);
}

.theme-analytics .tab-btn {
  transition:
    background var(--mp-transition-fast),
    color var(--mp-transition-fast);
  border-radius: var(--mp-radius-md);
}

.theme-analytics .tab-btn:focus-visible {
  outline: 2px solid var(--mp-accent);
  outline-offset: 2px;
}

.theme-analytics .tab-btn.active {
  background: var(--mp-accent) !important;
  color: #0f172a !important;
  font-weight: 600;
}

.theme-analytics .tab-btn:not(.active) {
  background: var(--mp-bg-elevated) !important;
  color: var(--mp-text-soft) !important;
  border: 1px solid var(--mp-border);
}

.fade-in-analytics {
  animation: fadeInAnalytics 0.4s ease;
}

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

/* ═════════ 站點詳情（沿用 .detail-card）═════════ */
.detail-card {
  background: var(--mp-surface);
  border-radius: var(--mp-radius-xl);
  box-shadow: var(--mp-shadow-card);
  border: 1px solid var(--mp-border);
  padding: 1.5rem;
}