/* =================================
   project-BN 統合スタイルシート（全ページ最適化版 v2.5.1）
   - 全ページハンバーガーメニュー対応
   - カレンダーレイアウト修正
   - 統一されたスマホ最適化
================================= */

/* =================================
   CSS変数定義（全ページ対応）
================================= */
:root {
    /* カラーパレット */
    --primary-gradient: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    --secondary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --accent-gradient: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 100%);
    --success-gradient: linear-gradient(135deg, #00b894 0%, #00a085 100%);
    --warning-gradient: linear-gradient(135deg, #fdcb6e 0%, #e17055 100%);
    --danger-gradient: linear-gradient(135deg, #ff3838 0%, #ff6b6b 100%);
    
    /* 背景色 */
    --bg-main: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    --bg-surface-alpha: rgba(44, 44, 44, 0.95);
    --bg-elevated-alpha: rgba(51, 51, 51, 0.90);
    --bg-card-alpha: rgba(42, 42, 42, 0.92);
    --bg-input-alpha: rgba(64, 64, 64, 0.85);
    
    /* テキスト色 */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.8);
    --text-muted: rgba(255, 255, 255, 0.6);
    --text-accent: #00d2ff;
    --text-success: #00b894;
    --text-warning: #fdcb6e;
    --text-danger: #ff6b6b;
    
    /* サイズとエフェクト（モバイル最適化） */
    --border-radius-small: 8px;
    --border-radius-medium: 12px;
    --border-radius-large: 20px;
    --shadow-light: 0 4px 15px rgba(0,0,0,0.2);
    --shadow-medium: 0 8px 32px rgba(0,0,0,0.3);
    --shadow-heavy: 0 12px 40px rgba(0,0,0,0.4);
    
    /* アニメーション */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* モバイル専用変数 */
    --mobile-padding: 16px;
    --mobile-gap: 12px;
    --touch-target-min: 44px;
    --header-height: 60px;
    --hamburger-width: 280px;
}

/* =================================
   基本レイアウト（モバイルファースト）
================================= */
* { 
    box-sizing: border-box; 
    margin: 0; 
    padding: 0; 
}

*:focus {
    outline: 3px solid var(--text-accent) !important;
    outline-offset: 2px !important;
    z-index: 10;
    position: relative;
}

body { 
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif; 
    background: 
        linear-gradient(135deg, rgba(26,26,26,0.75) 0%, rgba(45,45,45,0.75) 100%),
        url('/assets/background.webp') center/cover no-repeat,
        url('/assets/background.jpg') center/cover no-repeat,
        var(--bg-main);
    background-attachment: scroll;
    background-blend-mode: multiply;
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    
    /* 縦向き固定 */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    
    /* タッチ操作最適化 */
    -webkit-touch-callout: none;
    -webkit-tap-highlight-color: transparent;
}

/* 入力フィールドのみ選択可能 */
input, textarea, select {
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    user-select: text;
}

/* =================================
   ハンバーガーメニュー実装（全ページ共通）
================================= */
.navbar {
    background: var(--bg-surface-alpha);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-medium);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    height: var(--header-height);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--mobile-padding);
}

.hamburger-btn {
    width: var(--touch-target-min);
    height: var(--touch-target-min);
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-small);
    transition: var(--transition-fast);
    font-weight: bold;
    -webkit-tap-highlight-color: transparent;
}

.hamburger-btn:hover, .hamburger-btn:focus {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.05);
}

.hamburger-btn:active {
    transform: scale(0.95);
}

.nav-brand {
    font-size: 1.4em;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    flex: 1;
    text-align: center;
    margin: 0 var(--mobile-padding);
}

.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    backdrop-filter: blur(2px);
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.nav-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--hamburger-width);
    height: 100vh;
    background: var(--bg-surface-alpha);
    z-index: 1002;
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    backdrop-filter: blur(10px);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-heavy);
    display: flex;
    flex-direction: column;
}

.nav-sidebar.active {
    transform: translateX(0);
}

.nav-sidebar-header {
    padding: var(--mobile-padding);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    flex-shrink: 0;
}

.nav-sidebar-title {
    font-size: 1.2em;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-close-btn {
    width: var(--touch-target-min);
    height: var(--touch-target-min);
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-small);
    transition: var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.nav-close-btn:hover, .nav-close-btn:focus {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.nav-close-btn:active {
    transform: scale(0.95);
}

.nav-links {
    display: flex;
    flex-direction: column;
    padding: var(--mobile-padding) 0;
    flex: 1;
    overflow-y: auto;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 16px var(--mobile-padding);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1em;
    transition: var(--transition-normal);
    border-left: 4px solid transparent;
    min-height: var(--touch-target-min);
    -webkit-tap-highlight-color: transparent;
}

.nav-link:hover, .nav-link:focus {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-left-color: var(--text-accent);
}

.nav-link:active {
    background: rgba(255, 255, 255, 0.1);
}

.nav-link.active {
    background: rgba(255, 107, 107, 0.1);
    color: var(--text-primary);
    border-left-color: #ff6b6b;
    font-weight: 700;
}

/* =================================
   メインコンテンツ（ヘッダー分の余白追加）
================================= */
.main-content {
    margin-top: var(--header-height);
    padding: var(--mobile-padding);
    min-height: calc(100vh - var(--header-height));
}

/* =================================
   ヘッダーセクション（全ページ統一）
================================= */
.header { 
    background: linear-gradient(135deg, rgba(255,107,107,0.70) 0%, rgba(238,90,36,0.70) 100%);
    color: white; 
    padding: 24px var(--mobile-padding); 
    border-radius: var(--border-radius-large);
    text-align: center; 
    margin-bottom: 20px;
    box-shadow: 0 8px 32px rgba(255, 107, 107, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(3px);
}

.header h1 {
    margin: 0 0 8px 0; 
    font-size: 1.8em; 
    font-weight: 800;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.header h2 {
    margin: 0 0 6px 0; 
    font-size: 1.2em; 
    font-weight: 600;
}

.header p {
    margin: 0; 
    opacity: 0.9; 
    font-size: 1em;
}

.page-header {
    text-align: center;
    margin-bottom: 24px;
    padding: var(--mobile-padding);
    background: rgba(255,255,255,0.08);
    border-radius: var(--border-radius-large);
    backdrop-filter: blur(3px);
}

.page-header h1 {
    font-size: 2em;
    font-weight: 800;
    margin-bottom: 8px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 1em;
}

/* =================================
   統計カード（全ページ統一）
================================= */
.quick-stats, .stats-summary, .month-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--mobile-gap);
    margin-bottom: 20px;
}

.stat-card {
    background: var(--bg-elevated-alpha);
    padding: var(--mobile-padding);
    border-radius: var(--border-radius-medium);
    text-align: center;
    box-shadow: var(--shadow-light);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
    backdrop-filter: blur(5px);
    min-height: 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.stat-number {
    font-size: 1.6em;
    font-weight: 800;
    color: var(--text-accent);
    margin-bottom: 4px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.85em;
    font-weight: 600;
    line-height: 1.2;
}

/* =================================
   コンテナセクション（全ページ統一）
================================= */
.template-selector, .session, .search-section, .chart-container,
.calendar-container, .pr-section, .stats-section, .plan-management, 
.guide-section, .sessions-section {
    background: var(--bg-surface-alpha);
    margin: 20px 0; 
    padding: var(--mobile-padding); 
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-medium);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
}

.section-header {
    display: flex;
    flex-direction: column;
    gap: var(--mobile-gap);
    margin-bottom: var(--mobile-padding);
    align-items: stretch;
}

.section-header h4, .section-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.2em;
    font-weight: 700;
    text-align: center;
}

.header-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

/* =================================
   ボタンスタイル（タッチ最適化）
================================= */
.btn { 
    background: var(--secondary-gradient);
    color: white; 
    border: none; 
    padding: 12px 16px; 
    border-radius: var(--border-radius-medium);
    font-size: 14px; 
    cursor: pointer; 
    font-weight: 600; 
    transition: var(--transition-normal);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: var(--touch-target-min);
    font-family: inherit;
    white-space: nowrap;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.btn:hover, .btn:focus { 
    transform: translateY(-2px); 
    box-shadow: var(--shadow-medium);
}

.btn:active {
    transform: scale(0.98);
    transition: transform 0.1s ease;
}

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

.btn-secondary { 
    background: var(--secondary-gradient);
}

.btn-outline { 
    background: transparent; 
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-success { 
    background: var(--success-gradient);
}

.btn-warning { 
    background: var(--warning-gradient);
}

.btn-danger { 
    background: var(--danger-gradient);
}

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

.btn-sm {
    padding: 8px 12px;
    font-size: 0.8em;
    min-height: 36px;
}

.btn-large {
    padding: 16px 24px;
    font-size: 1.1em;
    min-height: 52px;
    width: 100%;
}

/* =================================
   テンプレートボタン（縦一列最適化）
================================= */
.template-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--mobile-gap);
    margin-bottom: 20px;
}

.template-btn {
    position: relative;
    background: var(--bg-elevated-alpha);
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.2);
    padding: 16px var(--mobile-padding);
    border-radius: var(--border-radius-medium);
    cursor: pointer;
    transition: var(--transition-normal);
    font-weight: 600;
    font-size: 1em;
    overflow: hidden;
    font-family: inherit;
    backdrop-filter: blur(5px);
    min-height: var(--touch-target-min);
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    text-align: left;
    -webkit-tap-highlight-color: transparent;
}

.template-btn:hover, .template-btn:focus {
    border-color: var(--text-accent);
    background: rgba(0, 210, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

.template-btn:active {
    transform: scale(0.98);
}

.template-btn.active {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 20px rgba(0, 210, 255, 0.4);
}

.template-btn.custom {
    border-color: rgba(253, 203, 110, 0.5);
}

.template-btn.custom:hover {
    border-color: var(--text-warning);
    background: rgba(253, 203, 110, 0.1);
}

.template-name {
    flex: 1;
    pointer-events: none;
}

.template-controls {
    display: flex;
    gap: 4px;
    opacity: 0;
    transition: var(--transition-fast);
}

.template-btn:hover .template-controls,
.template-btn:focus .template-controls {
    opacity: 1;
}

.template-control-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: inherit;
    min-height: var(--touch-target-min);
    min-width: var(--touch-target-min);
    -webkit-tap-highlight-color: transparent;
}

.edit-btn {
    background: var(--warning-gradient);
    color: white;
}

.delete-btn {
    background: var(--danger-gradient);
    color: white;
}

.template-control-btn:hover, .template-control-btn:focus {
    transform: scale(1.1);
}

.template-control-btn:active {
    transform: scale(0.95);
}

/* =================================
   種目関連スタイル（モバイル最適化）
================================= */
.exercise {
    background: var(--bg-elevated-alpha);
    margin: var(--mobile-gap) 0;
    border-radius: 15px;
    padding: var(--mobile-padding);
    box-shadow: var(--shadow-light);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
    backdrop-filter: blur(5px);
}

.exercise:hover {
    box-shadow: var(--shadow-medium);
}

.exercise-title {
    color: var(--text-primary);
    font-size: 1.1em;
    font-weight: 700;
    margin-bottom: var(--mobile-gap);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}

.exercise-controls {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.set-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.05);
    padding: 6px 12px;
    border-radius: var(--border-radius-small);
}

.set-control-btn {
    width: var(--touch-target-min);
    height: var(--touch-target-min);
    border: none;
    border-radius: 50%;
    background: var(--accent-gradient);
    color: white;
    cursor: pointer;
    font-weight: bold;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    font-family: inherit;
    -webkit-tap-highlight-color: transparent;
}

.set-control-btn:hover, .set-control-btn:focus {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 210, 255, 0.4);
}

.set-control-btn:active {
    transform: scale(0.95);
}

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

.set-count-display {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9em;
    min-width: 80px;
    text-align: center;
}

.move-btn, .remove-btn {
    width: var(--touch-target-min);
    height: var(--touch-target-min);
    border: none;
    border-radius: var(--border-radius-small);
    cursor: pointer;
    font-weight: bold;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: inherit;
    font-size: 16px;
    -webkit-tap-highlight-color: transparent;
}

.move-btn {
    background: var(--secondary-gradient);
    color: white;
}

.remove-btn {
    background: var(--danger-gradient);
    color: white;
}

.move-btn:hover, .remove-btn:hover,
.move-btn:focus, .remove-btn:focus {
    transform: scale(1.05);
}

.move-btn:active, .remove-btn:active {
    transform: scale(0.95);
}

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

/* =================================
   セット入力（横1列最適化）
================================= */
.set-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 8px 0;
    padding: 8px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius-small);
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.set-label {
    font-weight: 600;
    color: var(--text-accent);
    font-size: 0.9em;
    min-width: 60px;
    text-align: center;
    white-space: nowrap;
    flex-shrink: 0;
}

.input-group {
    display: flex;
    align-items: center;
    gap: 2px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-small);
    padding: 2px;
    flex-shrink: 0;
}

.set-row input[type="number"] {
    width: 60px;
    padding: 8px 6px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    background: var(--bg-input-alpha);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    transition: var(--transition-normal);
    font-family: inherit;
    -webkit-appearance: none;
    -moz-appearance: textfield;
}

.set-row input[type="number"]::-webkit-outer-spin-button,
.set-row input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.set-row input[type="number"]:focus {
    border-color: var(--text-accent);
    outline: none;
    box-shadow: 0 0 0 2px rgba(0, 210, 255, 0.2);
    background: rgba(255, 255, 255, 0.1);
}

.quick-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 6px;
    background: var(--primary-gradient);
    color: white;
    cursor: pointer;
    font-size: 10px;
    font-weight: bold;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: inherit;
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
}

.quick-btn:hover, .quick-btn:focus {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(255, 107, 107, 0.4);
}

.quick-btn:active {
    transform: scale(0.95);
}

.unit {
    font-size: 0.8em;
    color: var(--text-secondary);
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
}

.prev-value {
    color: var(--text-muted);
    font-size: 0.7em;
    margin-left: 2px;
    white-space: nowrap;
    flex-shrink: 0;
}

.volume {
    color: var(--text-accent);
    font-weight: bold;
    font-size: 0.85em;
    min-width: 50px;
    text-align: center;
    white-space: nowrap;
    flex-shrink: 0;
}

.prev-data {
    color: var(--text-muted);
    font-size: 0.85em;
    margin-bottom: 8px;
    padding: 6px 8px;
    background: rgba(0, 210, 255, 0.1);
    border-radius: var(--border-radius-small);
    border-left: 3px solid var(--text-accent);
}

.pr-info {
    color: var(--text-success);
    font-size: 0.85em;
    margin-bottom: 8px;
    padding: 6px 8px;
    background: rgba(0, 184, 148, 0.1);
    border-radius: var(--border-radius-small);
    border-left: 3px solid var(--text-success);
}

/* =================================
   アクションエリア（モバイル最適化）
================================= */
.add-exercise-section {
    text-align: center;
    margin: 20px 0;
}

.add-btn {
    background: var(--success-gradient);
    color: white;
    border: none;
    padding: 16px 24px;
    border-radius: var(--border-radius-medium);
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-light);
    font-family: inherit;
    min-height: var(--touch-target-min);
    width: 100%;
    -webkit-tap-highlight-color: transparent;
}

.add-btn:hover, .add-btn:focus {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.add-btn:active {
    transform: scale(0.98);
}

.actions {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: var(--mobile-gap);
}

.total-volume {
    text-align: center;
    font-size: 1.2em;
    font-weight: bold;
    color: var(--text-accent);
    margin: 20px 0;
    padding: var(--mobile-padding);
    background: rgba(0, 210, 255, 0.1);
    border-radius: var(--border-radius-medium);
    border: 2px solid rgba(0, 210, 255, 0.3);
}

/* =================================
   モーダル（モバイル最適化）
================================= */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    animation: modalFadeIn 0.3s ease;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--bg-surface-alpha);
    margin: 10% auto;
    padding: 20px;
    border-radius: var(--border-radius-large);
    width: 95%;
    max-width: 500px;
    color: var(--text-primary);
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-heavy);
    animation: modalSlideIn 0.3s ease;
    backdrop-filter: blur(8px);
    -webkit-overflow-scrolling: touch;
}

.modal-large {
    max-width: 90%;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: var(--mobile-gap);
}

.modal-actions {
    display: flex;
    flex-direction: column;
    gap: var(--mobile-gap);
    padding: 20px;
    background: var(--bg-elevated-alpha);
    border-radius: var(--border-radius-medium);
    backdrop-filter: blur(5px);
}

.modal h3 {
    margin-top: 0;
    text-align: center;
    font-weight: 700;
    margin-bottom: 20px;
    font-size: 1.3em;
}

.modal-input {
    width: 100%;
    padding: 12px;
    margin: 15px 0;
    border-radius: 10px;
    border: 2px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.1);
    color: var(--text-primary);
    font-size: 16px;
    transition: var(--transition-normal);
    font-family: inherit;
    min-height: var(--touch-target-min);
}

.modal-input:focus {
    border-color: var(--text-accent);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 210, 255, 0.2);
}

.modal-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--mobile-gap);
    justify-content: center;
    margin-top: 25px;
}

/* =================================
   種目選択モーダル（修正版）
================================= */
.exercise-category-header {
    background: var(--bg-elevated-alpha);
    color: var(--text-accent);
    padding: 12px 16px;
    margin: 15px 0 10px 0;
    border-radius: var(--border-radius-small);
    font-weight: 700;
    font-size: 1.1em;
    border-left: 4px solid var(--text-accent);
}

.exercise-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    margin: 8px 0;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-small);
    background: rgba(255, 255, 255, 0.05);
    transition: var(--transition-normal);
    min-height: var(--touch-target-min);
    -webkit-tap-highlight-color: transparent;
}

.exercise-option.clickable {
    cursor: pointer;
}

.exercise-option.clickable:hover {
    border-color: var(--text-accent);
    background: rgba(0, 210, 255, 0.1);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 210, 255, 0.2);
}

.exercise-option.clickable:active {
    transform: scale(0.98);
    box-shadow: 0 2px 8px rgba(0, 210, 255, 0.3);
}

.exercise-option.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.exercise-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1.05em;
    flex: 1;
}

.exercise-status {
    display: flex;
    gap: 8px;
    align-items: center;
}

.custom-badge {
    background: var(--accent-gradient);
    color: white;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.75em;
    font-weight: bold;
}

.added-badge {
    background: var(--text-muted);
    color: white;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.75em;
    font-weight: bold;
}

/* =================================
   履歴ページ専用スタイル（スマホ最適化）
================================= */
.search-controls {
    display: flex;
    flex-direction: column;
    gap: var(--mobile-gap);
}

.search-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.search-group label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9em;
}

.date-range {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.date-input, .filter-select, .volume-input, .sort-select {
    padding: 10px 12px;
    border-radius: var(--border-radius-small);
    border: 2px solid rgba(255, 255, 255, 0.2);
    background: var(--bg-input-alpha);
    color: var(--text-primary);
    font-family: inherit;
    min-height: var(--touch-target-min);
    flex: 1;
    min-width: 120px;
}

.date-input:focus, .filter-select:focus, .volume-input:focus, .sort-select:focus {
    border-color: var(--text-accent);
    outline: none;
    box-shadow: 0 0 0 2px rgba(0, 210, 255, 0.2);
}

.quick-dates {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.quick-date-btn {
    padding: 6px 12px;
    background: var(--secondary-gradient);
    color: white;
    border: none;
    border-radius: var(--border-radius-small);
    font-size: 0.8em;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.quick-date-btn:hover, .quick-date-btn:focus {
    transform: translateY(-1px);
    box-shadow: var(--shadow-light);
}

.quick-date-btn:active {
    transform: scale(0.95);
}

.volume-range {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.sessions-list {
    display: flex;
    flex-direction: column;
    gap: var(--mobile-gap);
}

.session-card {
    background: var(--bg-elevated-alpha);
    border-radius: var(--border-radius-medium);
    padding: var(--mobile-padding);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
    backdrop-filter: blur(5px);
}

.session-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.session-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 10px;
}

.session-date .date-main {
    font-size: 1.1em;
    font-weight: 700;
    color: var(--text-primary);
}

.session-date .date-weekday {
    font-size: 0.85em;
    color: var(--text-secondary);
}

.session-template .template-name {
    font-size: 1em;
    font-weight: 600;
    color: var(--text-accent);
}

.session-template .exercise-count {
    font-size: 0.85em;
    color: var(--text-secondary);
}

.session-volume .volume-main {
    font-size: 1.2em;
    font-weight: 700;
    color: var(--text-danger);
}

.session-volume .volume-max {
    font-size: 0.85em;
    color: var(--text-secondary);
}

.session-exercises-detail {
    margin-bottom: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
    font-size: 0.9em;
}

.session-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.session-action-btn {
    padding: 8px 12px;
    border: none;
    border-radius: var(--border-radius-small);
    font-size: 0.85em;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: inherit;
    min-height: 36px;
    -webkit-tap-highlight-color: transparent;
}

.view-btn {
    background: var(--accent-gradient);
    color: white;
}

.duplicate-btn {
    background: var(--secondary-gradient);
    color: white;
}

.delete-btn {
    background: var(--danger-gradient);
    color: white;
}

.session-action-btn:hover, .session-action-btn:focus {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.session-action-btn:active {
    transform: scale(0.95);
}

.no-results {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.no-results-icon {
    font-size: 3em;
    margin-bottom: 15px;
}

/* =================================
   カレンダーページ専用スタイル（修正版）
================================= */
.calendar-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.calendar-nav {
    display: flex;
    align-items: center;
    gap: 15px;
}

.current-month-title {
    font-size: 1.3em;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.nav-btn {
    width: var(--touch-target-min);
    height: var(--touch-target-min);
    border: none;
    border-radius: 50%;
    background: var(--accent-gradient);
    color: white;
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: inherit;
    font-weight: bold;
    -webkit-tap-highlight-color: transparent;
}

.nav-btn:hover, .nav-btn:focus {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 210, 255, 0.4);
}

.nav-btn:active {
    transform: scale(0.95);
}

.view-controls {
    display: flex;
    gap: 10px;
}

/* カレンダーグリッド（修正版） */
.calendar-header {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    margin-bottom: 1px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-small);
    overflow: hidden;
}

.day-header {
    background: var(--bg-elevated-alpha);
    padding: 12px 8px;
    text-align: center;
    font-weight: 700;
    color: var(--text-accent);
    font-size: 0.9em;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-small);
    overflow: hidden;
}

.calendar-day {
    position: relative;
    background: var(--bg-elevated-alpha);
    min-height: 70px;
    padding: 6px;
    cursor: pointer;
    transition: var(--transition-normal);
    backdrop-filter: blur(3px);
    display: flex;
    flex-direction: column;
    -webkit-tap-highlight-color: transparent;
}

.calendar-day:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.02);
}

.calendar-day:active {
    transform: scale(0.98);
}

.calendar-day.today {
    background: rgba(255, 107, 107, 0.2);
    border: 2px solid var(--text-danger);
}

.calendar-day.completed {
    background: rgba(0, 184, 148, 0.2);
    border: 2px solid var(--text-success);
}

.calendar-day.planned {
    background: rgba(0, 210, 255, 0.2);
    border: 2px solid var(--text-accent);
}

.calendar-day.other-month {
    opacity: 0.3;
}

.day-number {
    font-weight: bold;
    color: var(--text-primary);
    font-size: 0.9em;
}

.quick-add-plan {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 20px;
    height: 20px;
    border: none;
    border-radius: 50%;
    background: var(--accent-gradient);
    color: white;
    font-size: 12px;
    cursor: pointer;
    opacity: 0;
    transition: var(--transition-fast);
    font-family: inherit;
    -webkit-tap-highlight-color: transparent;
}

.calendar-day:hover .quick-add-plan {
    opacity: 1;
}

.quick-add-plan:active {
    transform: scale(0.9);
}

.day-content {
    margin-top: 5px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.session-indicator,
.plan-indicator {
    font-size: 0.7em;
    margin-bottom: 1px;
}

.session-summary {
    font-size: 0.6em;
    color: var(--text-success);
    font-weight: bold;
}

/* 計画管理フォーム */
.plan-form {
    background: rgba(255, 255, 255, 0.05);
    padding: var(--mobile-padding);
    border-radius: var(--border-radius-medium);
    margin-bottom: 20px;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: var(--mobile-gap);
    margin-bottom: 15px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9em;
}

.plan-input {
    padding: 12px;
    border-radius: var(--border-radius-small);
    border: 2px solid rgba(255, 255, 255, 0.2);
    background: var(--bg-input-alpha);
    color: var(--text-primary);
    font-family: inherit;
    transition: var(--transition-normal);
    min-height: var(--touch-target-min);
}

.plan-input:focus {
    border-color: var(--text-accent);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 210, 255, 0.2);
}

.form-help {
    font-size: 0.75em;
    color: var(--text-muted);
    margin-top: 4px;
}

.form-actions {
    text-align: center;
    margin-top: 15px;
}

.plans-list {
    display: flex;
    flex-direction: column;
    gap: var(--mobile-gap);
}

.plan-item {
    background: var(--bg-elevated-alpha);
    border-radius: var(--border-radius-medium);
    padding: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
}

.plan-item:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-light);
}

.plan-item.today-plan {
    border-color: var(--text-danger);
    background: rgba(255, 107, 107, 0.1);
}

.plan-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    flex-wrap: wrap;
    gap: 10px;
}

.plan-date {
    font-weight: 600;
    color: var(--text-primary);
}

.today-badge {
    background: var(--text-danger);
    color: white;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.7em;
    margin-left: 8px;
}

.weekday {
    color: var(--text-secondary);
    font-size: 0.85em;
}

.plan-delete-btn {
    background: var(--danger-gradient);
    color: white;
    border: none;
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8em;
    transition: var(--transition-fast);
    min-height: 32px;
    -webkit-tap-highlight-color: transparent;
}

.plan-delete-btn:hover, .plan-delete-btn:focus {
    transform: scale(1.05);
}

.plan-delete-btn:active {
    transform: scale(0.95);
}

.plan-details {
    color: var(--text-secondary);
}

.plan-template {
    font-weight: 600;
    color: var(--text-accent);
    margin-bottom: 5px;
}

.plan-notes {
    font-style: italic;
    color: var(--text-muted);
    font-size: 0.9em;
}

/* カレンダー凡例 */
.calendar-legend {
    background: var(--bg-surface-alpha);
    padding: var(--mobile-padding);
    border-radius: var(--border-radius-medium);
    margin-top: 20px;
    backdrop-filter: blur(8px);
}

.calendar-legend h4 {
    color: var(--text-primary);
    margin-bottom: 15px;
    font-size: 1.1em;
}

.legend-items {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.legend-color.completed {
    background: rgba(0, 184, 148, 0.7);
    border-color: var(--text-success);
}

.legend-color.planned {
    background: rgba(0, 210, 255, 0.7);
    border-color: var(--text-accent);
}

.legend-color.today {
    background: rgba(255, 107, 107, 0.7);
    border-color: var(--text-danger);
}

/* =================================
   分析ページ専用スタイル（スマホ最適化）
================================= */
.chart-tabs, .stats-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 10px;
}

.chart-tab, .stats-tab {
    padding: 10px 16px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition-normal);
    font-family: inherit;
    border-radius: var(--border-radius-small) var(--border-radius-small) 0 0;
    min-height: var(--touch-target-min);
    -webkit-tap-highlight-color: transparent;
}

.chart-tab.active, .stats-tab.active {
    color: var(--text-primary);
    border-bottom-color: var(--text-danger);
    background: rgba(255, 107, 107, 0.1);
}

.chart-tab:hover, .stats-tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.chart-tab:active, .stats-tab:active {
    transform: scale(0.98);
}

.chart-section, .stats-content {
    display: none;
}

.chart-section.active, .stats-content.active {
    display: block;
}

.chart-header {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
    align-items: stretch;
}

.chart-controls {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.control-label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9em;
}

.period-select, .exercise-select, .metric-select {
    padding: 10px 12px;
    border-radius: var(--border-radius-small);
    border: 2px solid rgba(255, 255, 255, 0.2);
    background: var(--bg-input-alpha);
    color: var(--text-primary);
    font-family: inherit;
    min-height: var(--touch-target-min);
}

.chart-wrapper {
    position: relative;
    height: 350px;
    margin-bottom: 20px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--border-radius-medium);
    padding: 15px;
}

.chart-wrapper canvas {
    max-height: 100%;
}

.pr-grid, .stats-grid {
    display: flex;
    flex-direction: column;
    gap: var(--mobile-gap);
}

.pr-card {
    background: var(--bg-elevated-alpha);
    border-radius: var(--border-radius-medium);
    padding: var(--mobile-padding);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
    backdrop-filter: blur(5px);
}

.pr-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.pr-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    flex-wrap: wrap;
    gap: 10px;
}

.pr-exercise {
    font-size: 1.1em;
    font-weight: 700;
    color: var(--text-primary);
}

.pr-category {
    font-size: 0.85em;
    color: var(--text-accent);
    font-weight: 600;
}

.pr-values {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    gap: 15px;
}

.pr-value {
    text-align: center;
    flex: 1;
}

.pr-value.primary .pr-number {
    color: var(--text-danger);
    font-size: 1.6em;
    font-weight: 800;
}

.pr-value.secondary .pr-number {
    color: var(--text-accent);
    font-size: 1.3em;
    font-weight: 700;
}

.pr-unit {
    font-size: 0.75em;
    color: var(--text-secondary);
    margin-left: 2px;
}

.pr-label {
    display: block;
    font-size: 0.75em;
    color: var(--text-muted);
    margin-top: 5px;
}

.pr-date {
    text-align: center;
    font-size: 0.75em;
    color: var(--text-muted);
}

.frequency-grid {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.frequency-item {
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--border-radius-medium);
    padding: var(--mobile-padding);
}

.frequency-header h4 {
    color: var(--text-primary);
    margin-bottom: 5px;
}

.frequency-header p {
    color: var(--text-secondary);
    font-size: 0.9em;
    margin-bottom: 15px;
}

/* =================================
   ガイドページ専用スタイル（スマホ最適化）
================================= */
.guide-sections {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.guide-section h2 {
    color: var(--text-danger);
    font-size: 1.6em;
    font-weight: 700;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid rgba(255, 107, 107, 0.3);
}

.guide-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.feature-item {
    background: var(--bg-elevated-alpha);
    border-radius: var(--border-radius-medium);
    padding: 20px;
    border-left: 4px solid var(--text-accent);
    transition: var(--transition-normal);
    backdrop-filter: blur(5px);
}

.feature-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-medium);
}

.feature-item h4 {
    color: var(--text-accent);
    font-size: 1.2em;
    font-weight: 700;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.feature-item h4::before {
    content: "▶";
    color: var(--text-danger);
    font-size: 0.8em;
}

.feature-item p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    font-size: 1em;
    margin-bottom: 12px;
}

.feature-item ul {
    list-style: none;
    padding: 0;
    margin: 12px 0;
}

.feature-item li {
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.6;
    margin-bottom: 8px;
    padding-left: 20px;
    position: relative;
}

.feature-item li::before {
    content: "✓";
    color: var(--text-success);
    font-weight: bold;
    position: absolute;
    left: 0;
    top: 0;
}

.feature-item strong {
    color: var(--text-primary);
    font-weight: 700;
}

/* =================================
   PRアラート・ステータス（モバイル最適化）
================================= */
#prAlert {
    margin-top: 15px;
    padding: var(--mobile-padding);
    border-radius: var(--border-radius-medium);
    background: var(--success-gradient);
    color: white;
    font-weight: bold;
    text-align: center;
    display: none;
    animation: prPulse 2s infinite;
    font-size: 1em;
}

.status {
    margin-top: 15px;
    padding: 12px;
    border-radius: var(--border-radius-small);
    text-align: center;
    font-weight: bold;
    transition: var(--transition-normal);
    font-size: 0.9em;
}

.status.success {
    background: var(--success-gradient);
    color: white;
}

.status.error {
    background: var(--danger-gradient);
    color: white;
}

/* =================================
   ユーティリティクラス
================================= */
.file-label {
    cursor: pointer;
}

.no-data {
    text-align: center;
    color: var(--text-muted);
    font-style: italic;
    padding: 40px 20px;
}

.no-data-detail {
    text-align: center;
    color: var(--text-muted);
    padding: 30px 20px;
}

.no-data-icon {
    font-size: 3em;
    margin-bottom: 15px;
}

.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;
}

.flash-highlight {
    animation: flashHighlight 2s ease;
}

/* =================================
   アニメーション定義
================================= */
@keyframes flashHighlight {
    0%, 100% { background-color: transparent; }
    50% { background-color: rgba(0, 210, 255, 0.2); }
}

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

@keyframes modalSlideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes prPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOutRight {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

@keyframes slideInUp {
    from { transform: translateY(100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes slideOutDown {
    from { transform: translateY(0); opacity: 1; }
    to { transform: translateY(100%); opacity: 0; }
}

@keyframes slideInDown {
    from { transform: translateY(-100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes slideOutUp {
    from { transform: translateY(0); opacity: 1; }
    to { transform: translateY(-100%); opacity: 0; }
}

/* =================================
   アクセシビリティ強化
================================= */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-contrast: high) {
    :root {
        --text-primary: #ffffff;
        --text-secondary: #ffffff;
        --bg-surface-alpha: rgba(0, 0, 0, 0.95);
        --bg-elevated-alpha: rgba(20, 20, 20, 0.95);
    }
    
    .btn {
        border: 2px solid currentColor;
    }
    
    .template-exercise-option {
        border-width: 3px;
    }
}

/* =================================
   印刷スタイル（簡略化）
================================= */
@media print {
    .navbar, .hamburger-btn, .nav-sidebar, .nav-overlay {
        display: none !important;
    }
    
    .main-content {
        margin-top: 0;
        padding: 0;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .template-selector, .session, .search-section, .chart-container,
    .calendar-container, .pr-section, .stats-section, .plan-management, .guide-section {
        background: white !important;
        backdrop-filter: none !important;
        box-shadow: none !important;
        border: 1px solid #ccc !important;
    }
}

/* =================================
   縦向き固定
================================= */
@media screen and (orientation: landscape) and (max-width: 768px) {
    body::before {
        content: "📱 縦向きでご利用ください";
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.9);
        color: white;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.2em;
        font-weight: bold;
        z-index: 9999;
    }
}

/* =================================
   パフォーマンス最適化
================================= */
.btn, .template-btn, .set-control-btn, .quick-btn, .modal-content,
.nav-sidebar, .nav-overlay, .hamburger-btn, .nav-close-btn {
    will-change: transform;
    transform: translateZ(0);
}

/* タッチスクロールの最適化 */
.modal-content, .nav-sidebar, .exercise-selection-grid {
    -webkit-overflow-scrolling: touch;
}

/* スクロールバーの非表示（モバイル） */
.exercise-selection-grid::-webkit-scrollbar,
.modal-content::-webkit-scrollbar,
.nav-sidebar::-webkit-scrollbar {
    width: 0px;
    background: transparent;
}

/* タッチフィードバックの改善 */
.btn:active, .template-btn:active, .set-control-btn:active, 
.quick-btn:active, .hamburger-btn:active, .nav-close-btn:active,
.nav-link:active, .session-action-btn:active, .plan-delete-btn:active {
    transform: scale(0.98) !important;
    transition: transform 0.1s ease !important;
}

/* フォーカス表示の改善 */
*:focus-visible {
    outline: 3px solid var(--text-accent) !important;
    outline-offset: 2px !important;
    z-index: 10;
    position: relative;
}

.template-btn:focus-visible,
.template-exercise-option:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 210, 255, 0.4);
}

/* =================================
   ハンバーガーメニュー修正（最終版）
================================= */
.nav-sidebar {
    transform: translateX(-100%) !important;
    transition: transform 0.3s ease !important;
}

.nav-sidebar.active {
    transform: translateX(0) !important;
}

.nav-overlay {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
    transition: all 0.3s ease !important;
}

.nav-overlay.active {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
}