/*
 * ============================================
 * 習い事教室向け 出欠・振替・ストック管理システム
 * メインスタイルシート
 * ============================================
 */

/* ============================================
   CSS変数（カスタムプロパティ）
   ============================================ */
:root {
    /* プライマリカラー - グラデーション用 */
    --primary-start: #667eea;
    --primary-end: #764ba2;
    --primary-gradient: linear-gradient(135deg, var(--primary-start) 0%, var(--primary-end) 100%);
    
    /* アクセントカラー */
    --accent-teal: #38b2ac;
    --accent-coral: #fc8181;
    --accent-amber: #f6ad55;
    --accent-green: #68d391;
    
    /* ニュートラルカラー */
    --bg-light: #f7fafc;
    --bg-card: #ffffff;
    --bg-dark: #1a202c;
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --text-muted: #a0aec0;
    --border-color: #e2e8f0;
    
    /* ステータスカラー */
    --status-present: #48bb78;
    --status-absent: #f56565;
    --status-makeup: #4299e1;
    
    /* シャドウ */
    --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(0,0,0,0.15);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);
    
    /* 角丸 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* トランジション */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ============================================
   リセット・ベーススタイル
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
  height: 100%;
  margin: 0;
}


html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'メイリオ', sans-serif;
    background: var(--bg-light);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--primary-start);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* ============================================
   レイアウト
   ============================================ */
.app-container {
    display: flex;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* ============================================
   サイドバー
   ============================================ */
.sidebar {
    width: 280px;
    background: var(--primary-gradient);
    color: white;
    padding: 2rem 0;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-lg);
}

.sidebar-header {
    padding: 0 1.5rem 2rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-logo {
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-logo i {
    font-size: 1.5rem;
}

.sidebar-nav {
    flex: 1;
    padding: 1.5rem 0;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 1.5rem;
}

.nav-section-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255,255,255,0.6);
    padding: 0 1.5rem;
    margin-bottom: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.5rem;
    color: rgba(255,255,255,0.85);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.nav-link:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

.nav-link.active {
    background: rgba(255,255,255,0.15);
    border-left-color: white;
    color: white;
}

.nav-link i {
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-name {
    font-weight: 500;
}

.user-role {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.6);
}

/* メインコンテンツのオフセット */
.has-sidebar .main-content {
    margin-left: 280px;
}

/* ============================================
   ヘッダー
   ============================================ */
.page-header {
    margin-bottom: 2rem;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.page-subtitle {
    color: var(--text-secondary);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.breadcrumb a {
    color: var(--text-secondary);
}

.breadcrumb i {
    font-size: 0.625rem;
}

/* ============================================
   カード
   ============================================ */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.card-icon.primary {
    background: linear-gradient(135deg, rgba(102,126,234,0.1), rgba(118,75,162,0.1));
    color: var(--primary-start);
}

.card-icon.success {
    background: rgba(72,187,120,0.1);
    color: var(--status-present);
}

.card-icon.danger {
    background: rgba(245,101,101,0.1);
    color: var(--status-absent);
}

.card-icon.info {
    background: rgba(66,153,225,0.1);
    color: var(--status-makeup);
}

/* ダッシュボードカード */
.stat-card {
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* グリッドレイアウト */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.card-grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

/* ============================================
   フォーム
   ============================================ */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-label.required::after {
    content: ' *';
    color: var(--status-absent);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    background: var(--bg-card);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-start);
    box-shadow: 0 0 0 3px rgba(102,126,234,0.15);
}

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

select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23718096' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.form-error {
    color: var(--status-absent);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* チェックボックス・ラジオ */
.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.form-check input {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-start);
}

/* ============================================
   ボタン
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(102,126,234,0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102,126,234,0.4);
    color: white;
}

.btn-secondary {
    background: var(--bg-light);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

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

.btn-success:hover {
    background: #38a169;
    color: white;
}

.btn-danger {
    background: var(--status-absent);
    color: white;
}

.btn-danger:hover {
    background: #e53e3e;
    color: white;
}

.btn-info {
    background: var(--status-makeup);
    color: white;
}

.btn-info:hover {
    background: #3182ce;
    color: white;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-start);
    color: var(--primary-start);
}

.btn-outline:hover {
    background: var(--primary-start);
    color: white;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.0625rem;
}

.btn-block {
    width: 100%;
}

.btn-group {
    display: flex;
    gap: 0.5rem;
}

/* ============================================
   テーブル
   ============================================ */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-md);
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background: var(--bg-light);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table tr:hover td {
    background: rgba(102,126,234,0.03);
}

.table tr:last-child td {
    border-bottom: none;
}

/* ============================================
   バッジ・ステータス
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-present {
    background: rgba(72,187,120,0.1);
    color: var(--status-present);
}

.badge-absent {
    background: rgba(245,101,101,0.1);
    color: var(--status-absent);
}

.badge-makeup {
    background: rgba(66,153,225,0.1);
    color: var(--status-makeup);
}

.badge-active {
    background: rgba(72,187,120,0.1);
    color: var(--status-present);
}

.badge-inactive {
    background: rgba(160,174,192,0.2);
    color: var(--text-muted);
}

/* ============================================
   アラート・メッセージ
   ============================================ */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.alert i {
    font-size: 1.125rem;
    margin-top: 0.125rem;
}

.alert-success {
    background: rgba(72,187,120,0.1);
    color: #276749;
    border-left: 4px solid var(--status-present);
}

.alert-error {
    background: rgba(245,101,101,0.1);
    color: #c53030;
    border-left: 4px solid var(--status-absent);
}

.alert-warning {
    background: rgba(246,173,85,0.1);
    color: #c05621;
    border-left: 4px solid var(--accent-amber);
}

.alert-info {
    background: rgba(66,153,225,0.1);
    color: #2b6cb0;
    border-left: 4px solid var(--status-makeup);
}

/* ============================================
   ストック表示
   ============================================ */
.stock-display {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.stock-dot {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stock-dot.filled {
    background: var(--primary-gradient);
    box-shadow: 0 2px 8px rgba(102,126,234,0.4);
}

.stock-dot.empty {
    background: var(--border-color);
}

.stock-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
}

.stock-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stock-date {
    font-weight: 500;
}

.stock-expire {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.stock-expire.expiring {
    color: var(--accent-coral);
}

/* ============================================
   ログインページ
   ============================================ */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    padding: 2rem;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: 3rem 2.5rem;
    animation: fadeInUp 0.5s ease;
}

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

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* ============================================
   モーダル
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    display: flex;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--border-color);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* ============================================
   レスポンシブ
   ============================================ */
@media (max-width: 1024px) {
    .sidebar {
        width: 240px;
    }
    
    .has-sidebar .main-content {
        margin-left: 240px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .has-sidebar .main-content {
        margin-left: 0;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
    
    .page-title {
        font-size: 1.5rem;
    }
    
    .table th,
    .table td {
        padding: 0.75rem 0.5rem;
        font-size: 0.875rem;
    }
    
    .btn-group {
        flex-direction: column;
    }
    
    .mobile-menu-toggle {
        display: block;
        position: fixed;
        bottom: 1.5rem;
        right: 1.5rem;
        width: 56px;
        height: 56px;
        border-radius: 50%;
        background: var(--primary-gradient);
        color: white;
        border: none;
        font-size: 1.5rem;
        box-shadow: var(--shadow-lg);
        cursor: pointer;
        z-index: 99;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

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

/* ============================================
   ユーティリティ
   ============================================ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary-start); }
.text-success { color: var(--status-present); }
.text-danger { color: var(--status-absent); }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }

.hidden { display: none !important; }

/* アニメーション */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.animate-pulse {
    animation: pulse 2s infinite;
}

/* ============================================
   カレンダー風表示
   ============================================ */
.calendar-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.5rem;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    min-width: 60px;
}

.calendar-date .month {
    font-size: 0.625rem;
    text-transform: uppercase;
    color: var(--text-muted);
}

.calendar-date .day {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.calendar-date .weekday {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.card-grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}