/*
Theme Name: Sapporo Travel Support
Description: WordPress移行対応 - 札幌観光ガイドサービス用モダンテーマ
Version: 1.0.0
Author: Sapporo Travel Support Team
Text Domain: sapporo-travel
Requires at least: 5.0
Tested up to: 6.4
Requires PHP: 7.4
License: GPL v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html

This theme, like WordPress, is licensed under the GPL.
Use it to make something cool, have fun, and share what you've learned.
*/

/* ==========================================================================
   WordPress対応 CSS変数（カスタムプロパティ）
   ========================================================================== */
:root {
  /* カラーパレット */
  --color-primary: #2c5aa0;
  --color-primary-light: #4a7bc8;
  --color-primary-dark: #1e3f73;
  --color-secondary: #f39c12;
  --color-secondary-light: #f5b041;
  --color-secondary-dark: #d68910;
  --color-accent: #e74c3c;
  --color-accent-light: #ec7063;
  --color-accent-dark: #c0392b;
  
  /* ニュートラルカラー */
  --color-white: #ffffff;
  --color-light-gray: #f8f9fa;
  --color-gray: #6c757d;
  --color-dark-gray: #495057;
  --color-black: #212529;
  
  /* 背景色 */
  --color-bg-primary: var(--color-white);
  --color-bg-secondary: var(--color-light-gray);
  --color-bg-dark: var(--color-black);
  
  /* テキストカラー */
  --color-text-primary: var(--color-black);
  --color-text-secondary: var(--color-gray);
  --color-text-light: var(--color-white);
  
  /* 間隔 */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  --spacing-xxxl: 4rem;
  
  /* ブレークポイント */
  --breakpoint-sm: 576px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 992px;
  --breakpoint-xl: 1200px;
  --breakpoint-xxl: 1400px;
  
  /* ヘッダー関連 */
  --header-height: 80px;
  --header-height-mobile: 70px;
  
  /* WordPress固有 */
  --wp-admin-bar-height: 32px;
  --wp-admin-bar-height-mobile: 46px;

  /* Legacy variables for backward compatibility - Updated to 8px grid system */
  --primary-blue: var(--color-primary);
  --accent-red: #ff6b6b;
  --success-green: #28a745;
  --clean-white: var(--color-white);
  --soft-gray: var(--color-light-gray);
  --text-dark: #333333;
  --text-light: #666666;
  --border-light: #e9ecef;

  /* 8px grid spacing system (matches production) */
  --space-xs: 0.5rem;      /* 8px */
  --space-sm: 1rem;         /* 16px */
  --space-md: 2rem;         /* 32px */
  --space-lg: 3rem;         /* 48px */
  --space-xl: 4rem;         /* 64px */
  --space-xxl: 6rem;        /* 96px - for pickup-tours/footer */
  --space-2xl: 4rem;        /* 64px */
  --space-3xl: 6rem;        /* 96px */

  /* Breakpoints */
  --mobile: 768px;
  --tablet: 1024px;
  --desktop: 1200px;

  /* Header */
  --header-height-compact: 50px;
  --header-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
  --header-backdrop: blur(12px);

  /* Tours page specific */
  --primary-blue-dark: #0052a3;
  --text-medium: #5a6c7d;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 8px 30px rgba(0, 102, 204, 0.15);

  /* Transitions */
  --transition-fast: 0.15s ease-out;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Additional colors from main-styles.css */
  --warning-yellow: #ffc107;
  --light-gray: #e9ecef;
  --medium-gray: #6c757d;
  --text-muted: #999999;
  --shadow-light: rgba(0, 0, 0, 0.1);
  --shadow-medium: rgba(0, 0, 0, 0.15);
  --shadow-dark: rgba(0, 0, 0, 0.25);

  /* Additional breakpoints */
  --wide: 1200px;
  --ultra-wide: 1440px;

  /* Border radius (standardized naming) */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
  --border-radius-round: 50px;

  /* Typography - Unified font settings */
  --font-family-primary: "Source Sans 3", "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-family-heading: "Source Sans 3", "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-display: "Source Sans 3", "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic Medium", "Meiryo", sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 900;

  /* Line heights */
  --line-height-tight: 1.1;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;
  --line-height-loose: 1.8;
}

/* === 📱 Responsive Spacing (0.9× scaling for tablet/mobile) === */
@media (max-width: 1024px) {
  :root {
    --space-xs: 0.45rem;     /* 7.2px */
    --space-sm: 0.9rem;      /* 14.4px */
    --space-md: 1.8rem;      /* 28.8px */
    --space-lg: 2.7rem;      /* 43.2px */
    --space-xl: 3.6rem;      /* 57.6px */
    --space-xxl: 6.17rem;    /* ~98.69px - for pickup-tours/footer */
    --space-2xl: 3.6rem;     /* 57.6px */
    --space-3xl: 6.17rem;    /* ~98.69px */
  }
}

/* ==========================================================================
   WordPress対応 リセット・ベーススタイル
   ========================================================================== */

/* 基本リセット */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Source Sans 3', 'Noto Sans JP', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  overflow-x: hidden;
}

/* WordPress管理バー対応 */
.admin-bar .site-header {
  top: var(--wp-admin-bar-height);
}

@media screen and (max-width: 782px) {
  .admin-bar .site-header {
    top: var(--wp-admin-bar-height-mobile);
  }
}

/* WordPress標準クラス */
.alignnone {
  margin: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 0;
}

.aligncenter,
div.aligncenter {
  display: block;
  margin: var(--spacing-md) auto;
}

.alignright {
  float: right;
  margin: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-md);
}

.alignleft {
  float: left;
  margin: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 0;
}

.aligncenter {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

/* WordPress specific styles */
.wp-block-image {
  margin-bottom: var(--space-md);
}

.alignwide {
  width: 100vw;
  max-width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}

.alignfull {
  width: 100vw;
  max-width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}

.wp-caption {
  background: var(--color-light-gray);
  border: 1px solid var(--color-gray);
  border-radius: 4px;
  margin: var(--spacing-md) 0;
  padding: var(--spacing-sm);
  text-align: center;
}

.wp-caption.alignnone {
  margin: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 0;
}

.wp-caption.alignleft {
  margin: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 0;
}

.wp-caption.alignright {
  margin: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-md);
}

.wp-caption img {
  border: 0 none;
  height: auto;
  margin: 0;
  max-width: 98.5%;
  padding: 0;
  width: auto;
}

.wp-caption p.wp-caption-text {
  font-size: 0.875rem;
  line-height: 1.5;
  margin: var(--spacing-sm) 0 0;
  text-align: center;
}

/* ギャラリー */
.gallery {
  margin: var(--spacing-md) auto;
}

.gallery-item {
  display: inline-block;
  text-align: center;
  vertical-align: top;
  width: 100%;
}

.gallery-columns-2 .gallery-item {
  max-width: 50%;
}

.gallery-columns-3 .gallery-item {
  max-width: 33.33%;
}

.gallery-columns-4 .gallery-item {
  max-width: 25%;
}

.gallery-columns-5 .gallery-item {
  max-width: 20%;
}

.gallery-columns-6 .gallery-item {
  max-width: 16.66%;
}

.gallery-columns-7 .gallery-item {
  max-width: 14.28%;
}

.gallery-columns-8 .gallery-item {
  max-width: 12.5%;
}

.gallery-columns-9 .gallery-item {
  max-width: 11.11%;
}

.gallery-caption {
  display: block;
  font-size: 0.875rem;
  line-height: 1.5;
  margin: 0;
  padding: var(--spacing-sm);
}

/* スティッキー投稿 */
.sticky {
  /* スティッキー投稿のスタイル */
}

/* 投稿フォーマット */
.format-aside {
  /* アサイド投稿のスタイル */
}

.format-gallery {
  /* ギャラリー投稿のスタイル */
}

.format-link {
  /* リンク投稿のスタイル */
}

.format-image {
  /* 画像投稿のスタイル */
}

.format-quote {
  /* 引用投稿のスタイル */
}

.format-status {
  /* ステータス投稿のスタイル */
}

.format-video {
  /* ビデオ投稿のスタイル */
}

.format-audio {
  /* オーディオ投稿のスタイル */
}

.format-chat {
  /* チャット投稿のスタイル */
}

/* 検索フォーム */
.search-form {
  position: relative;
}

.search-form label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
}

.search-form input[type="search"] {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--color-gray);
  border-radius: 4px;
  font-size: 1rem;
}

.search-form input[type="submit"] {
  position: absolute;
  right: var(--spacing-sm);
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 4px;
  cursor: pointer;
}

/* ページネーション */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-sm);
  margin: var(--spacing-xl) 0;
}

.pagination .page-numbers {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-white);
  border: 2px solid var(--color-gray);
  border-radius: 4px;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: all 0.3s ease;
}

.pagination .page-numbers:hover,
.pagination .page-numbers.current {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.pagination .page-numbers.dots {
  border: none;
  background: transparent;
}

/* コメント */
.comments-area {
  margin: var(--spacing-xl) 0;
}

.comment-list {
  list-style: none;
  padding: 0;
}

.comment {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--color-light-gray);
  border-radius: 8px;
}

.comment-author {
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.comment-meta {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.comment-content {
  line-height: 1.6;
}

.reply {
  margin-top: var(--spacing-sm);
}

.reply a {
  font-size: 0.875rem;
  color: var(--color-primary);
  text-decoration: none;
}

.reply a:hover {
  text-decoration: underline;
}

/* ウィジェット */
.widget {
  margin-bottom: var(--spacing-xl);
}

.widget-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.widget ul {
  list-style: none;
  padding: 0;
}

.widget li {
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-light-gray);
}

.widget li:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.widget a {
  color: var(--color-text-primary);
  text-decoration: none;
}

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

/* カスタム投稿タイプ: ツアー */
.post-type-archive-tour .page-header {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.single-tour .entry-header {
  margin-bottom: var(--spacing-xl);
}

.tour-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-md);
  background: var(--color-light-gray);
  border-radius: 8px;
}

.tour-meta-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.tour-meta-label {
  font-weight: 600;
  color: var(--color-text-secondary);
}

.tour-meta-value {
  color: var(--color-text-primary);
}

/* BEM記法対応のベーススタイル */
.sts-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.sts-section {
  padding: var(--spacing-xl) 0;
}

.sts-section--large {
  padding: var(--spacing-xxxl) 0;
}

.sts-section--small {
  padding: var(--spacing-lg) 0;
}

/* ユーティリティクラス */
.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;
}

.clearfix::after {
  content: "";
  display: table;
  clear: both;
}

/* ==========================================================================
   レスポンシブデザイン対応
   ========================================================================== */

/* モバイルファーストアプローチ */
/* ベースサイズ（モバイル） */
.sts-container {
    padding: 0 var(--spacing-sm);
}

/* タブレット以上 */
@media (min-width: 768px) {
    .sts-container {
        padding: 0 var(--spacing-md);
    }
    
    .sts-section {
        padding: var(--spacing-xxl) 0;
    }
    
    /* ヘッダー高さ調整 */
    :root {
        --header-height: 80px;
    }
}

/* デスクトップ以上 */
@media (min-width: 992px) {
    .sts-container {
        padding: 0 var(--spacing-lg);
    }
    
    .sts-section--large {
        padding: calc(var(--spacing-xxxl) * 1.5) 0;
    }
}

/* 大画面デスクトップ */
@media (min-width: 1200px) {
    .sts-container {
        max-width: 1200px;
        padding: 0 var(--spacing-xl);
    }
}

/* 超大画面 */
@media (min-width: 1400px) {
    .sts-container {
        max-width: 1400px;
    }
}

/* レスポンシブタイポグラフィ */
@media (max-width: 767px) {
    h1 {
        font-size: 1.75rem;
        line-height: 1.2;
    }
    
    h2 {
        font-size: 1.5rem;
        line-height: 1.3;
    }
    
    h3 {
        font-size: 1.25rem;
        line-height: 1.4;
    }
    
    .hero__title {
        font-size: 2rem;
    }
    
    .hero__subtitle {
        font-size: 1rem;
    }
}

@media (min-width: 768px) {
    h1 {
        font-size: 2.5rem;
        line-height: 1.2;
    }
    
    h2 {
        font-size: 2rem;
        line-height: 1.3;
    }
    
    h3 {
        font-size: 1.5rem;
        line-height: 1.4;
    }
    
    .hero__title {
        font-size: 3rem;
    }
    
    .hero__subtitle {
        font-size: 1.25rem;
    }
}

@media (min-width: 1200px) {
    h1 {
        font-size: 3rem;
    }
    
    h2 {
        font-size: 2.5rem;
    }
    
    .hero__title {
        font-size: 4rem;
    }
    
    .hero__subtitle {
        font-size: 1.5rem;
    }
}

/* レスポンシブグリッド */
.sts-grid {
    display: grid;
    gap: var(--spacing-md);
    grid-template-columns: 1fr;
}

@media (min-width: 576px) {
    .sts-grid--2-cols {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .sts-grid {
        gap: var(--spacing-lg);
    }
    
    .sts-grid--3-cols {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .sts-grid--4-cols {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .sts-grid--4-cols {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* レスポンシブFlexbox */
.sts-flex {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .sts-flex--row {
        flex-direction: row;
        align-items: center;
    }
    
    .sts-flex--space-between {
        justify-content: space-between;
    }
    
    .sts-flex--center {
        justify-content: center;
    }
}

/* レスポンシブスペーシング */
@media (max-width: 767px) {
    .sts-section {
        padding: var(--spacing-lg) 0;
    }
    
    .sts-section--large {
        padding: var(--spacing-xl) 0;
    }
    
    .sts-section--small {
        padding: var(--spacing-md) 0;
    }
}

/* レスポンシブ画像 */
.sts-img-responsive {
    max-width: 100%;
    height: auto;
    display: block;
}

.sts-img-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* レスポンシブビデオ */
.sts-video-responsive {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
}

.sts-video-responsive iframe,
.sts-video-responsive object,
.sts-video-responsive embed {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* レスポンシブテーブル */
.sts-table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

@media (max-width: 767px) {
    .sts-table-responsive table {
        min-width: 600px;
    }
}

/* レスポンシブナビゲーション */
@media (max-width: 991px) {
    .sts-nav-desktop {
        display: none;
    }
    
    .sts-nav-mobile {
        display: block;
    }
}

@media (min-width: 992px) {
    .sts-nav-desktop {
        display: block;
    }
    
    .sts-nav-mobile {
        display: none;
    }
}

/* レスポンシブボタン */
.sts-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
}

@media (min-width: 768px) {
    .sts-btn {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1rem;
    }
}

/* レスポンシブカード */
.sts-card {
    margin-bottom: var(--spacing-md);
}

@media (min-width: 768px) {
    .sts-card {
        margin-bottom: var(--spacing-lg);
    }
}

/* レスポンシブフォーム */
.sts-form-group {
    margin-bottom: var(--spacing-md);
}

.sts-form-control {
    width: 100%;
    padding: var(--spacing-sm);
    font-size: 0.875rem;
}

@media (min-width: 768px) {
    .sts-form-control {
        padding: var(--spacing-md);
        font-size: 1rem;
    }
}

/* レスポンシブモーダル */
@media (max-width: 767px) {
    .sts-modal {
        margin: var(--spacing-sm);
        max-height: calc(100vh - var(--spacing-md));
        overflow-y: auto;
    }
}

/* プリント対応 */
@media print {
    .sts-no-print {
        display: none !important;
    }
    
    .sts-container {
        max-width: none;
        padding: 0;
    }
    
    .sts-section {
        padding: var(--spacing-md) 0;
    }
    
    a[href]:after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: var(--color-text-secondary);
    }
    
    .sts-btn {
        border: 1px solid var(--color-text-primary);
        background: transparent !important;
        color: var(--color-text-primary) !important;
    }
}

/* ダークモード対応 */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg-primary: #1a1a1a;
        --color-bg-secondary: #2d2d2d;
        --color-text-primary: #ffffff;
        --color-text-secondary: #cccccc;
        --color-border: #404040;
    }
    
    .sts-card {
        background: var(--color-bg-secondary);
        border-color: var(--color-border);
    }
}

/* 高コントラストモード対応 */
@media (prefers-contrast: high) {
    :root {
        --color-primary: #0000ff;
        --color-accent: #ff0000;
        --color-text-primary: #000000;
        --color-bg-primary: #ffffff;
    }
    
    .sts-btn {
        border: 2px solid currentColor;
    }
    
    a {
        text-decoration: underline;
    }
}

/* 動きを減らす設定 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ===== 🏗️ HEADER STYLES ===== */

/* === 🏗️ Header Base Structure === */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: var(--header-backdrop);
  -webkit-backdrop-filter: var(--header-backdrop);
  box-shadow: var(--header-shadow);
  z-index: 1300;
  transition: all 0.3s ease;
  border-bottom: 1px solid var(--border-light);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}

/* === 🎭 Animations === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes pulse {
  0% {
    box-shadow: 0 2px 8px rgba(255, 107, 107, 0.3);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.5);
    transform: scale(1.05);
  }
  100% {
    box-shadow: 0 2px 8px rgba(255, 107, 107, 0.3);
    transform: scale(1);
  }
}

/* === 📱 Responsive Design === */
@media (max-width: 768px) {
  .hero-content {
    min-height: 100vh;
    padding-top: 120px;
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
  }

  .hero-cta {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .hero-text {
    padding: var(--space-md) var(--space-sm);
    max-width: 95%;
    margin: var(--space-lg) auto 0;
  }

  .hero-title .main-title {
    font-size: clamp(2.5rem, 10vw, 4rem);
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    margin-top: var(--space-md);
  }

  .contact-form {
    padding: var(--space-lg);
  }
}

/* === 🖥️ デスクトップ対応（768px以上 - 単一ブレイクポイント） === */
@media (min-width: 768px) {
  .tours-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-xl);
  }

  .guide-content {
    grid-template-columns: 1fr 2fr;
    gap: var(--space-xl);
    text-align: left;
  }

  .contact-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }
}

@media (max-width: 480px) {
  .hero-content {
    padding-top: 100px;
  }

  .hero-text {
    padding: var(--space-sm) calc(var(--space-xs) * 0.5);
    gap: var(--space-sm);
    max-width: 98%;
    margin: var(--space-xl) auto 0;
  }

  .hero-title .main-title {
    font-size: clamp(1.8rem, 9vw, 2.8rem);
  }

  .hero-description {
    font-size: clamp(0.9rem, 4vw, 1.1rem);
    padding: var(--space-sm);
  }
}

/* === ♿ Accessibility === */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .hero-text,
  .hero-title .main-title,
  .hero-description,
  .cta-button:hover,
  .guide-photo:hover {
    transform: none !important;
  }
}

@media (prefers-contrast: high) {
  .contact-method,
  .contact-form {
    border: 2px solid var(--text-dark);
  }
}

/* === ⚡ Performance Optimizations === */
.hero-section,
.hero-background,
.hero-background::before,
.hero-background::after,
.hero-text::before {
  will-change: transform, opacity;
  transform: translateZ(0);
  backface-visibility: hidden;
}

.hero-image {
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
  content-visibility: auto;
  contain-intrinsic-size: 1200px 800px;
}

@media print {
  .hero-section,
  .pickup-tours,
  .about-guide,
  .contact-section {
    break-inside: avoid;
    page-break-inside: avoid;
  }

  .cta-button:hover,
  .guide-photo:hover,
  .contact-method:hover {
    transform: none !important;
  }

  .hero-background {
    display: none !important;
  }
}

/* ===================================================================
   🎨 ADDITIONAL COMPONENTS & UTILITIES
   ================================================================ */

/* === 📦 Card System === */
.card {
  background: var(--clean-white);
  border: 1px solid var(--border-light);
  border-radius: 15px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: all var(--transition-normal);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.card-header {
  padding: var(--space-md);
  border-bottom: 1px solid var(--border-light);
  background: var(--soft-gray);
}

.card-body {
  padding: var(--space-md);
}

.card-footer {
  padding: var(--space-md);
  border-top: 1px solid var(--border-light);
  background: var(--soft-gray);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-image-lg {
  height: 250px;
}

.card-image-xl {
  height: 300px;
}

/* === 🎭 Badge System === */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
  border-radius: 50px;
  white-space: nowrap;
}

.badge-primary {
  background: var(--primary-blue);
  color: var(--clean-white);
}

.badge-success {
  background: var(--success-green);
  color: var(--clean-white);
}

.badge-warning {
  background: #ffc107;
  color: var(--text-dark);
}

.badge-accent {
  background: var(--accent-red);
  color: var(--clean-white);
}

.badge-light {
  background: var(--border-light);
  color: var(--text-dark);
}

/* === 🎪 Grid System === */
.grid {
  display: grid;
  gap: var(--space-md);
}

.grid-1 {
  grid-template-columns: 1fr;
}
.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}
.grid-auto {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}
.grid-auto-sm {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}
.grid-auto-lg {
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.grid-gap-sm {
  gap: var(--space-sm);
}
.grid-gap-md {
  gap: var(--space-md);
}
.grid-gap-lg {
  gap: var(--space-lg);
}

/* === 📸 Instagram Gallery UI === */
.tour-gallery {
  animation: fadeInUp 0.8s ease-out;
}

.instagram-preview {
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  border-radius: 20px;
  padding: 2rem;
  position: relative;
  overflow: hidden;
  margin: var(--space-lg) 0;
  animation: slideInUp 0.6s ease-out 0.2s both;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.instagram-preview::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  animation: shimmer 3s linear infinite;
  pointer-events: none;
}

@keyframes shimmer {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  max-width: 300px;
  margin: 0 auto 2rem;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
  transition: transform 0.3s ease;
}

.preview-grid:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0,0,0,0.2);
}

.preview-item {
  aspect-ratio: 1;
  overflow: hidden;
  position: relative;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
  filter: brightness(1) saturate(1.1);
}

.preview-item:hover img {
  transform: scale(1.1);
  filter: brightness(1.1) saturate(1.2);
}

.instagram-overlay {
  background: linear-gradient(45deg, #405de6, #5851db, #833ab4, #c13584, #e1306c, #fd1d1d);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.instagram-overlay::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.3);
  transition: opacity 0.3s ease;
}

.instagram-overlay:hover::before {
  opacity: 0.1;
}

.overlay-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: white;
  font-weight: 600;
  z-index: 1;
  transition: transform 0.3s ease;
  text-align: center;
}

.instagram-overlay:hover .overlay-content {
  transform: scale(1.1);
}

.instagram-icon {
  font-size: 2rem;
  animation: pulse 2s infinite;
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
  color: #E4405F;
  filter: drop-shadow(0 0 8px rgba(228, 64, 95, 0.3));
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.instagram-icon svg {
  width: 2rem;
  height: 2rem;
  transition: all 0.3s ease;
}

.instagram-overlay:hover .instagram-icon svg {
  transform: scale(1.1);
  filter: drop-shadow(0 0 12px rgba(228, 64, 95, 0.5));
}

.more-text {
  font-size: 0.875rem;
  font-weight: 500;
  text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

.instagram-cta-text {
  text-align: center;
  position: relative;
  z-index: 1;
}

.instagram-cta-text h3 {
  color: var(--text-dark);
  margin-bottom: var(--space-sm);
  font-weight: 700;
}

.instagram-cta-text p {
  color: var(--text-light);
  margin-bottom: var(--space-md);
  font-size: 1rem;
  line-height: 1.6;
}

.instagram-btn,
.cta-button.instagram-btn {
  background: linear-gradient(45deg, #405de6, #5851db, #833ab4, #c13584, #e1306c, #fd1d1d) !important;
  border: none !important;
  color: white !important;
  padding: 1rem 2rem;
  border-radius: 50px !important;
  font-weight: 600;
  font-size: 1.1rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  text-decoration: none !important;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.instagram-btn::before,
.cta-button.instagram-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s ease;
}

.instagram-btn:hover::before,
.cta-button.instagram-btn:hover::before {
  left: 100%;
}

.instagram-btn:hover,
.cta-button.instagram-btn:hover {
  transform: translateY(-3px) !important;
  box-shadow: 0 8px 30px rgba(0,0,0,0.3) !important;
  color: white !important;
  background: linear-gradient(45deg, #405de6, #5851db, #833ab4, #c13584, #e1306c, #fd1d1d) !important;
}

.instagram-btn:focus,
.cta-button.instagram-btn:focus {
  outline: 3px solid rgba(255,255,255,0.5);
  outline-offset: 2px;
}

/* === 🎯 Utility Classes === */
.d-flex {
  display: flex;
}
.d-grid {
  display: grid;
}
.d-block {
  display: block;
}
.d-inline {
  display: inline;
}
.d-inline-block {
  display: inline-block;
}
.d-none {
  display: none;
}

.flex-column {
  flex-direction: column;
}
.flex-row {
  flex-direction: row;
}
.flex-wrap {
  flex-wrap: wrap;
}

.justify-center {
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}

.align-center {
  align-items: center;
}
.align-start {
  align-items: flex-start;
}

.gap-xs {
  gap: var(--space-xs);
}
.gap-sm {
  gap: var(--space-sm);
}
.gap-md {
  gap: var(--space-md);
}
.gap-lg {
  gap: var(--space-lg);
}

.text-center {
  text-align: center;
}
.text-left {
  text-align: left;
}
.text-right {
  text-align: right;
}

.text-large {
  font-size: clamp(1.125rem, 2vw, 1.25rem);
  line-height: 1.6;
}

.text-small {
  font-size: 0.875rem;
  line-height: 1.5;
}

.text-muted {
  color: var(--text-light);
}

/* Screen reader only content */
.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;
}

/* === 📱 Additional Responsive Design === */
@media (max-width: 768px) {
  .instagram-preview {
    padding: 1.5rem;
    margin: var(--space-md) 0;
  }

  .preview-grid {
    max-width: 250px;
    gap: 6px;
  }

  .instagram-btn,
  .cta-button.instagram-btn {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
  }

  .instagram-icon {
    font-size: 1.75rem;
  }

  .instagram-icon svg {
    width: 1.75rem;
    height: 1.75rem;
  }

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

  .d-mobile-none {
    display: none;
  }

  .d-mobile-block {
    display: block;
  }

  .text-mobile-center {
    text-align: center;
  }
}

@media (max-width: 480px) {
  .instagram-preview {
    padding: 1rem;
    border-radius: 16px;
  }

  .preview-grid {
    max-width: 200px;
    gap: 4px;
  }

  .instagram-btn,
  .cta-button.instagram-btn {
    padding: 0.75rem 1.25rem;
    font-size: 0.95rem;
    border-radius: 40px;
  }

  .instagram-icon {
    font-size: 1.5rem;
  }

  .instagram-icon svg {
    width: 1.5rem;
    height: 1.5rem;
  }

  .more-text {
    font-size: 0.75rem;
  }
}

/* === ♿ Enhanced Accessibility === */
@media (prefers-reduced-motion: reduce) {
  .tour-gallery,
  .instagram-preview,
  .instagram-preview::before,
  .instagram-icon,
  .preview-item img,
  .overlay-content,
  .instagram-btn,
  .cta-button.instagram-btn {
    animation: none !important;
    transition: none !important;
  }

  .preview-grid:hover,
  .preview-item:hover img,
  .instagram-overlay:hover .overlay-content,
  .instagram-btn:hover,
  .cta-button.instagram-btn:hover {
    transform: none !important;
  }
}

@media (prefers-contrast: high) {
  .card {
    border: 2px solid var(--text-dark);
  }

  .badge {
    border: 1px solid var(--text-dark);
  }
}

/* === 🖨️ Enhanced Print Styles === */
@media print {
  .card:hover {
    transform: none !important;
  }

  .d-print-none,
  .instagram-preview {
    display: none !important;
  }

  * {
    background: white !important;
    color: black !important;
    box-shadow: none !important;
  }
}

/* ===================================================================
   🌐 MULTILINGUAL SUPPORT & LANGUAGE SWITCHER
   ================================================================ */

/* === 🇯🇵 Japanese Font Settings === */
:lang(ja),
.lang-ja {
  font-family: "Source Sans 3", "Noto Sans JP", 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Yu Gothic Medium', 'Meiryo', 'MS PGothic', sans-serif;
  line-height: 1.7;
  letter-spacing: 0.05em;
}

:lang(ja) h1, :lang(ja) h2, :lang(ja) h3,
.lang-ja h1, .lang-ja h2, .lang-ja h3 {
  font-family: "Source Sans 3", "Noto Sans JP", 'Hiragino Mincho ProN', 'Yu Mincho', 'MS PMincho', serif;
  font-weight: 600;
  letter-spacing: 0.1em;
}

/* === 🇺🇸 English Font Settings === */
:lang(en),
.lang-en {
  font-family: "Source Sans 3", 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  letter-spacing: 0.025em;
}

:lang(en) h1, :lang(en) h2, :lang(en) h3,
.lang-en h1, .lang-en h2, .lang-en h3 {
  font-family: "Source Sans 3", 'Playfair Display', 'Georgia', 'Times New Roman', serif;
  font-weight: 700;
  letter-spacing: 0.05em;
}

/* === 🇨🇳 Chinese Font Settings === */
:lang(zh-CN), :lang(cn),
.lang-zh, .lang-cn {
  font-family: "Source Sans 3", 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', sans-serif;
  line-height: 1.8;
  letter-spacing: 0.08em;
}

:lang(zh-CN) h1, :lang(zh-CN) h2, :lang(zh-CN) h3,
:lang(cn) h1, :lang(cn) h2, :lang(cn) h3,
.lang-zh h1, .lang-zh h2, .lang-zh h3,
.lang-cn h1, .lang-cn h2, .lang-cn h3 {
  font-family: "Source Sans 3", 'PingFang SC', 'Hiragino Sans GB', 'STHeiti', serif;
  font-weight: 600;
  letter-spacing: 0.12em;
}

/* === 🇰🇷 Korean Font Settings === */
:lang(ko), :lang(kr),
.lang-ko, .lang-kr {
  font-family: "Source Sans 3", 'Apple SD Gothic Neo', 'Malgun Gothic', 'Nanum Gothic', 'Dotum', sans-serif;
  line-height: 1.7;
  letter-spacing: 0.06em;
}

:lang(ko) h1, :lang(ko) h2, :lang(ko) h3,
:lang(kr) h1, :lang(kr) h2, :lang(kr) h3,
.lang-ko h1, .lang-ko h2, .lang-ko h3,
.lang-kr h1, .lang-kr h2, .lang-kr h3 {
  font-family: "Source Sans 3", 'Apple SD Gothic Neo', 'Nanum Myeongjo', 'Batang', serif;
  font-weight: 600;
  letter-spacing: 0.1em;
}

/* === 🎨 Language-specific Color Accents === */
.lang-ja .hero-title {
  color: #2c5aa0; /* Japanese Indigo */
}

.lang-en .hero-title {
  color: #1e3a8a; /* British Navy */
}

.lang-cn .hero-title {
  color: #dc2626; /* Chinese Red */
}

.lang-kr .hero-title {
  color: #059669; /* Korean Green */
}

/* === 🌐 Language Switcher === */
.language-switcher {
  position: relative;
  display: inline-block;
  margin-left: 1rem;
  writing-mode: horizontal-tb;
  text-orientation: mixed;
}

.language-switcher-button {
  background: rgba(44, 90, 160, 0.1);
  border: 2px solid var(--primary-blue);
  border-radius: 6px;
  padding: 12px 16px;
  color: var(--primary-blue);
  font-weight: 600;
  font-size: 0.85rem;
  line-height: 1.2;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  height: auto;
  min-height: 48px;
  box-sizing: border-box;
  writing-mode: horizontal-tb;
  text-orientation: mixed;
  white-space: nowrap;
  margin-right: 16px;
}

.language-switcher-button:hover {
  background: var(--primary-blue);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(44, 90, 160, 0.3);
}

.language-switcher-button::after {
  content: '▼';
  font-size: 0.7rem;
  transition: transform 0.3s ease;
}

.language-switcher.is-open .language-switcher-button::after {
  transform: rotate(180deg);
}

.language-dropdown {
  position: absolute;
  top: 100%;
  right: -16px;
  background: white;
  border: 2px solid var(--primary-blue);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
  min-width: 160px;
  margin-top: 8px;
  max-width: 180px;
}

.language-switcher.is-open .language-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.language-option {
  display: flex;
  padding: 0.7rem 1rem;
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.85rem;
  border-bottom: 1px solid #f0f0f0;
  transition: all 0.2s ease;
  align-items: center;
  gap: 0.5rem;
  writing-mode: horizontal-tb;
  text-orientation: mixed;
  white-space: nowrap;
}

.language-option:last-child {
  border-bottom: none;
}

.language-option:hover {
  background: rgba(44, 90, 160, 0.1);
  color: var(--primary-blue);
}

.language-option.current {
  background: var(--primary-blue);
  color: white;
  font-weight: 600;
}

.language-flag {
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
  writing-mode: horizontal-tb;
  text-orientation: mixed;
}

.language-name {
  writing-mode: horizontal-tb;
  text-orientation: mixed;
  white-space: nowrap;
  display: inline-block;
}

/* removed: Japanese tagline adjustments */

.lang-ja .logo-container {
  max-width: 280px;
  flex: 0 0 auto;
}

.lang-ja .logo {
  flex: 1 1 auto;
  min-width: 0;
}

/* === 🎨 Language-specific Button Styles === */
.lang-ja .cta-button {
  padding: 0.8rem 2rem;
  font-weight: 600;
}

.lang-en .cta-button {
  padding: 0.75rem 1.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.lang-cn .cta-button {
  padding: 0.85rem 2.2rem;
  font-weight: 600;
}

.lang-kr .cta-button {
  padding: 0.8rem 2rem;
  font-weight: 600;
}

/* === 📱 Language-specific Mobile Responsive === */
@media (max-width: 768px) {
  :lang(ja), .lang-ja {
    font-size: 0.9rem;
    line-height: 1.8;
  }

  :lang(en), .lang-en {
    font-size: 0.95rem;
    line-height: 1.7;
  }

  :lang(zh-CN), :lang(cn), .lang-zh, .lang-cn {
    font-size: 0.85rem;
    line-height: 1.9;
  }

  :lang(ko), :lang(kr), .lang-ko, .lang-kr {
    font-size: 0.9rem;
    line-height: 1.8;
  }

  .language-switcher {
    margin-left: 0.5rem;
    flex-shrink: 0;
  }

  .language-switcher-button {
    padding: 10px 12px;
    font-size: 0.8rem;
    min-height: 44px;
    line-height: 1.2;
    min-width: auto;
    margin-right: 8px;
  }

  .language-dropdown {
    min-width: 120px;
    right: 0;
    left: auto;
  }

  .language-option {
    padding: 0.5rem 0.8rem;
    font-size: 0.75rem;
  }
}

@media (max-width: 480px) {
  .language-switcher {
    margin-left: 0.25rem;
    flex-shrink: 0;
  }

  .language-switcher-button {
    padding: 0.2rem 0.4rem;
    font-size: 0.7rem;
    min-height: 24px;
    gap: 0.2rem;
  }

  .language-switcher-button .language-name {
    display: none;
  }

  .language-flag {
    font-size: 1rem;
    width: 16px;
  }

  .language-dropdown {
    min-width: 100px;
    right: 0;
    left: auto;
    margin-top: 0.25rem;
  }

  .language-option {
    padding: 0.4rem 0.6rem;
    font-size: 0.7rem;
    gap: 0.3rem;
  }

  .language-option .language-flag {
    font-size: 0.9rem;
    width: 14px;
  }
}

@media (max-width: 360px) {
  .language-switcher {
    margin-left: 0.1rem;
  }

  .language-switcher-button {
    padding: 0.15rem 0.3rem;
    font-size: 0.65rem;
    min-height: 22px;
  }

  .language-flag {
    font-size: 0.9rem;
    width: 14px;
  }

  .language-dropdown {
    min-width: 90px;
    font-size: 0.65rem;
  }

  .language-option {
    padding: 0.3rem 0.5rem;
    font-size: 0.65rem;
  }
}

/* === 🌐 RTL Language Support (Future Extension) === */
[dir="rtl"] {
  text-align: right;
}

[dir="rtl"] .language-switcher {
  margin-right: auto;
  margin-left: 0;
}

/* === 🎵 Language Transition Animation === */
.lang-transition {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === 📊 Language-specific Typography Optimization === */
.lang-ja .card-title {
  line-height: 1.4;
}

.lang-en .card-title {
  line-height: 1.3;
}

.lang-cn .card-title {
  line-height: 1.5;
}

.lang-kr .card-title {
  line-height: 1.4;
}

/* Language-specific subtitle adjustments */
.lang-ja .hero-subtitle {
  font-size: 1.1rem;
}

.lang-en .hero-subtitle {
  font-size: 1.15rem;
}

.lang-cn .hero-subtitle {
  font-size: 1.05rem;
}

.lang-kr .hero-subtitle {
  font-size: 1.1rem;
}