/* ==========================================================================
   台灣好行 Taiwan Tourist Shuttle — 共用樣式（Header / Footer / Base / Utilities）
   本網站為 UI/UX 概念改版作品集專案，非官方網站。
   ========================================================================== */

:root {
  /* 主要操作色（按鈕、連結、焦點狀態）：加深過的橘紅色，
     搭配白色文字對比約 4.6:1，符合 WCAG AA 一般文字門檻 */
  --color-primary: #c94f36;
  --color-primary-dark: #a83e29;
  /* 裝飾色：原本較淺的橘色，僅用於大面積背景／裝飾圖形，
     不直接用於承載小字級的白色文字 */
  --color-primary-light: #ff7854;
  --color-primary-lighter: #ff9966;
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  --gradient-decorative: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary-lighter) 100%);

  --color-text: #1a1a1a;
  --color-text-muted: #5c5c5c;
  --color-border: #e0e0e0;
  --color-surface: #ffffff;
  --color-bg: #fafafa;
  --color-footer-bg: #1e293b;
  --color-footer-text: #e2e8f0;
  --color-footer-muted: #b6c2d1;
  --color-footer-border: rgba(255, 255, 255, 0.14);

  --color-success: #1a7a41;
  --color-success-bg: #eaf7ee;
  --color-warning: #a15c00;
  --color-warning-bg: #fff4e0;
  --color-danger: #c22b2b;
  --color-danger-bg: #fdecec;
  --color-neutral-bg: #eef0f2;

  --font-ui: "Inter", "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;

  --container-width: 1280px;
  --header-height: 72px;

  /* 圓角規則：大型主要面板 16／一般卡片 12／輸入框與按鈕 10／Pill 999 */
  --radius-sm: 10px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 999px;

  /* 陰影分級：主要面板用 md，內容卡片預設無陰影、hover 才用 sm，避免全站都像浮起的卡片 */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);

  /* 字級系統：全站盡量從這裡取值，避免出現 10px/10.5px/11px 這類過小字級 */
  --font-size-page-title: 34px;
  --font-size-section-title: 24px;
  --font-size-card-title: 17px;
  --font-size-body: 15px;
  --font-size-small: 13px;
  --font-size-label: 12px;

  /* 間距系統 */
  --space-section: 64px;
  --space-section-mobile: 40px;
  --space-card: 24px;
  --space-card-mobile: 18px;

  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  /* 卡片 Hover 位移效果直接關閉，而不只是縮短過渡時間 */
  .attraction-card:hover,
  .package-card:hover,
  .rec-card:hover {
    transform: none !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-ui);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body.body-scroll-lock {
  overflow: hidden;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
}

input,
select,
textarea {
  font-family: inherit;
  font-size: 16px; /* 至少 16px，避免 iOS Safari 自動放大 */
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ------------------------- Focus 樣式 ------------------------- */
/* 全站統一、清楚可見的鍵盤焦點樣式，不使用瀏覽器預設也不隱藏 outline */

:focus-visible {
  outline: 3px solid var(--color-text);
  outline-offset: 3px;
  border-radius: 4px;
}

.site-footer :focus-visible {
  outline-color: #fff;
}

/* ------------------------- Skip Link ------------------------- */

.skip-link {
  position: absolute;
  top: -100px;
  left: 12px;
  z-index: 300;
  background: var(--color-text);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 12px;
}

/* ------------------------- 概念作品提示列 ------------------------- */

.concept-banner {
  background: #faf5f2;
  border-bottom: 1px solid #efe3db;
  color: #6b3a26;
  font-size: 12.5px;
  line-height: 1.5;
}

.concept-banner .container {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 7px;
  padding-bottom: 7px;
}

.concept-banner svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  color: var(--color-primary-dark);
}

/* ------------------------- Header ------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-height);
}

.brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand img {
  height: 32px;
  width: auto;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  flex: 1;
}

.main-nav a {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--color-text);
  white-space: nowrap;
}

.main-nav a.is-active {
  color: var(--color-primary);
  font-weight: 700;
}

.main-nav a:hover {
  color: var(--color-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.btn-login {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  color: #fff;
  font-size: 14.5px;
  transition: background 0.15s ease;
  font-weight: 500;
  white-space: nowrap;
}

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

.btn-login img {
  width: 16px;
  height: 16px;
  filter: brightness(0) invert(1);
}

.menu-toggle {
  display: none;
  border: none;
  background: none;
  padding: 8px;
  flex-direction: column;
  gap: 4px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ------------------------- Buttons (shared) ------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-md);
  font-size: 14.5px;
  font-weight: 700;
  padding: 14px 24px;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
}

.btn-white {
  background: #fff;
  color: var(--color-primary);
}

/* 尚未開發、明確標示「規劃中」的停用項目 */
.is-planned {
  position: relative;
  color: var(--color-text-muted) !important;
  cursor: not-allowed;
}

.planned-tag {
  display: inline-block;
  margin-left: 6px;
  font-size: 10px;
  font-weight: 700;
  color: var(--color-text-muted);
  background: var(--color-neutral-bg);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  vertical-align: middle;
}

/* ------------------------- Footer ------------------------- */

.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 48px 0 0;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand img {
  height: 32px;
  width: auto;
  margin-bottom: 16px;
}

.footer-brand p {
  color: var(--color-footer-muted);
  font-size: 13px;
  margin: 0;
  max-width: 240px;
}

.footer-col {
  min-width: 160px;
  flex: 1;
}

.footer-col h3 {
  color: #fff;
  font-size: 16px;
  margin: 0 0 16px;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  color: var(--color-footer-muted);
  font-size: 13px;
}

.footer-col a:hover {
  color: #fff;
}

.footer-col .is-planned {
  color: #7c8ba1 !important;
}

.footer-bottom {
  border-top: 1px solid var(--color-footer-border);
  padding: 24px 0;
  text-align: center;
}

.footer-bottom p {
  margin: 0;
  font-size: 13px;
  color: var(--color-footer-muted);
}

.footer-bottom .tagline {
  font-size: 11px;
  color: #94a3b8;
  margin-top: 6px;
  letter-spacing: 0.05em;
}

.footer-disclaimer {
  font-size: 12px;
  color: #94a3b8;
  margin: 10px 0 0;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* ------------------------- Toast (role=status) ------------------------- */

.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--color-text);
  color: #fff;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  font-size: 14px;
  z-index: 300;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  max-width: min(90vw, 360px);
}

.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ------------------------- 通用 Modal（資訊型 Dialog 共用樣式） ------------------------- */
/* 用於路線頁的行程說明／無障礙預約說明、會員中心 QR Modal 等單純資訊型彈窗。
   購物車抽屜與訂單確認 Dialog 因版型較特殊，樣式獨立寫在 tickets.css。 */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 250;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

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

.modal-panel {
  position: relative;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px;
  max-width: 420px;
  width: 100%;
  max-height: min(600px, 85vh);
  overflow-y: auto;
}

.modal-close-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--color-bg);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close-btn svg {
  width: 16px;
  height: 16px;
}

.modal-panel h2,
.modal-panel h3 {
  font-size: 18px;
  margin: 0 0 4px;
  padding-right: 28px;
}

.modal-panel .modal-subtitle {
  font-size: 12.5px;
  color: var(--color-text-muted);
  margin: 0 0 16px;
}

.modal-panel p {
  font-size: 13.5px;
  color: var(--color-text);
  line-height: 1.7;
  margin: 0 0 16px;
}

.modal-phone-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: var(--radius-lg);
  padding: 13px;
  background: var(--gradient-primary);
  color: #fff;
  font-size: 14.5px;
  font-weight: 700;
}

.modal-phone-link svg {
  width: 16px;
  height: 16px;
}

/* ------------------------- 通用 Empty State ------------------------- */

.empty-state {
  text-align: center;
  padding: 56px 24px;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.empty-state svg {
  width: 40px;
  height: 40px;
  color: var(--color-text-muted);
  margin: 0 auto 14px;
}

.empty-state h3 {
  font-size: 17px;
  margin: 0 0 6px;
}

.empty-state p {
  font-size: 13.5px;
  color: var(--color-text-muted);
  margin: 0 0 18px;
}

.empty-state .btn {
  display: inline-flex;
}

/* ------------------------- Responsive ------------------------- */

.mobile-nav-actions {
  display: none;
}

@media (max-width: 900px) {
  .main-nav {
    position: fixed;
    inset: var(--header-height) 0 0 0;
    background: var(--color-surface);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 20px;
    transform: translateX(100%);
    transition: transform 0.25s ease;
    z-index: 90;
  }

  .main-nav.is-open {
    transform: translateX(0);
  }

  .main-nav a {
    font-size: 17px;
  }

  .menu-toggle {
    display: flex;
  }

  .mobile-nav-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
  }

  .mobile-nav-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 48px;
    padding: 14px;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
  }

  .mobile-nav-cta img,
  .mobile-nav-cta svg {
    width: 18px;
    height: 18px;
  }

  .mobile-nav-cta.is-primary {
    background: var(--color-primary);
    color: #fff;
  }

  .mobile-nav-cta.is-primary img {
    filter: brightness(0) invert(1);
  }

  .mobile-nav-cta.is-secondary {
    background: #fff;
    border: 1.5px solid var(--color-border);
    color: var(--color-text);
  }

  .mobile-nav-cta.is-secondary svg {
    color: var(--color-primary);
  }

  .footer-top {
    flex-direction: column;
    gap: 28px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .btn-login span {
    display: none;
  }

  .btn-login {
    padding: 10px;
  }

  .btn-login img {
    margin: 0;
  }
}