/*
Theme Name: 駒場学園同窓会名簿システム
Description: 駒場学園同窓会の名簿管理システム用テーマ
Version: 1.0
*/

/* ==============================================================
   グローバルスタイル
   ============================================================== */

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: #333;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
    min-height: 100vh;
}

/* ==============================================================
   共通要素
   ============================================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

h1, h2, h3, h4, h5, h6 {
    color: #2c3e50;
    margin-top: 0;
}

a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #2980b9;
    text-decoration: underline;
}

/* ==============================================================
   ボタンスタイル
   ============================================================== */

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    margin: 0.25rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.btn-primary {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, #27ae60, #229954);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, #f39c12, #d68910);
    color: white;
}

.btn-secondary {
    background: linear-gradient(135deg, #95a5a6, #7f8c8d);
    color: white;
}

/* ==============================================================
   フォームスタイル
   ============================================================== */

.form-control {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 1rem;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #2c3e50;
}

.form-text {
    font-size: 0.875rem;
    color: #6c757d;
    margin-top: 0.25rem;
}

/* ==============================================================
   アラートスタイル
   ============================================================== */

.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: 5px;
    font-weight: 500;
}

.alert-success {
    color: #155724;
    background-color: #d4edda;
    border-color: #c3e6cb;
}

.alert-error {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}

.alert-warning {
    color: #856404;
    background-color: #fff3cd;
    border-color: #ffeaa7;
}

.alert-info {
    color: #0c5460;
    background-color: #d1ecf1;
    border-color: #bee5eb;
}

/* ==============================================================
   テーブルスタイル
   ============================================================== */

.table {
    width: 100%;
    margin-bottom: 1rem;
    background-color: white;
    border-collapse: collapse;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.table th,
.table td {
    padding: 0.75rem;
    border-bottom: 1px solid #dee2e6;
    text-align: left;
}

.table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #495057;
    border-bottom: 2px solid #dee2e6;
}

.table tbody tr:hover {
    background-color: #f8f9fa;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(0,0,0,.05);
}

/* ==============================================================
   カードスタイル
   ============================================================== */

.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.card-header {
    padding: 1.25rem;
    background-color: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
}

.card-body {
    padding: 1.25rem;
}

.card-footer {
    padding: 1.25rem;
    background-color: #f8f9fa;
    border-top: 1px solid #dee2e6;
}

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

@media (max-width: 768px) {
    .container {
        padding: 0 0.5rem;
    }
    
    .btn {
        display: block;
        width: 100%;
        margin: 0.5rem 0;
    }
    
    .table {
        font-size: 0.875rem;
    }
    
    .table th,
    .table td {
        padding: 0.5rem;
    }
}

@media (max-width: 576px) {
    body {
        font-size: 0.9rem;
    }
    
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.3rem; }
    h3 { font-size: 1.1rem; }
    
    .card-body,
    .card-header,
    .card-footer {
        padding: 1rem;
    }
}

/* ==============================================================
   ユーティリティクラス
   ============================================================== */

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

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }

.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }

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

.w-100 { width: 100%; }
.h-100 { height: 100%; }

/* ==============================================================
   特殊効果
   ============================================================== */

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

.loading {
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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