/* SEO対策ツール スタイルシート */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', 'Hiragino Sans', 'Yu Gothic', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ヘッダー */
header {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
}

nav a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.3s;
}

nav a:hover {
    background-color: #34495e;
}

/* メインコンテンツ */
main {
    padding: 2rem 0;
    min-height: calc(100vh - 200px);
}

.page-header {
    margin-bottom: 2rem;
}

.page-header h2 {
    font-size: 2rem;
    color: #2c3e50;
    border-bottom: 3px solid #3498db;
    padding-bottom: 0.5rem;
}

/* カード */
.card {
    background: white;
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.card h4 {
    color: #34495e;
    margin: 1.5rem 0 1rem;
    font-size: 1.2rem;
}

/* フォーム */
.form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

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

.form-group label {
    font-weight: bold;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
}

/* ボタン */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-secondary {
    background-color: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
}

.btn-info {
    background-color: #1abc9c;
    color: white;
}

.btn-info:hover {
    background-color: #16a085;
}

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
}

/* テーブル */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

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

.table th {
    background-color: #f8f9fa;
    font-weight: bold;
    color: #2c3e50;
}

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

/* アラート */
.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

/* 順位バッジ */
.ranking-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-weight: bold;
    font-size: 0.9rem;
}

.ranking-top {
    background-color: #d4edda;
    color: #155724;
}

.ranking-good {
    background-color: #fff3cd;
    color: #856404;
}

.ranking-low {
    background-color: #f8d7da;
    color: #721c24;
}

/* ダッシュボード */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.dashboard-card {
    background: white;
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    text-align: center;
}

.dashboard-card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.stats {
    margin: 2rem 0;
}

.stat-number {
    font-size: 3rem;
    font-weight: bold;
    color: #3498db;
}

.stat-label {
    color: #7f8c8d;
    margin-top: 0.5rem;
}

/* 診断結果 */
.audit-summary {
    background-color: #f8f9fa;
    padding: 1.5rem;
    border-radius: 4px;
    margin-bottom: 1.5rem;
}

.summary-item {
    margin-bottom: 1rem;
}

.summary-item .label {
    font-weight: bold;
    color: #2c3e50;
    display: inline-block;
    width: 200px;
}

.summary-item .value {
    color: #555;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.metric {
    background-color: #f8f9fa;
    padding: 1rem;
    border-radius: 4px;
    text-align: center;
}

.metric-label {
    font-size: 0.9rem;
    color: #7f8c8d;
    margin-bottom: 0.5rem;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2c3e50;
}

/* SEO問題点 */
.issues-list {
    margin-top: 1rem;
}

.issue {
    border-left: 4px solid;
    padding: 1rem;
    margin-bottom: 1rem;
    background-color: #f8f9fa;
    border-radius: 4px;
}

.issue-high {
    border-left-color: #e74c3c;
}

.issue-medium {
    border-left-color: #f39c12;
}

.issue-low {
    border-left-color: #3498db;
}

.issue-header {
    margin-bottom: 0.5rem;
}

.severity-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: bold;
    margin-right: 0.5rem;
}

.severity-high {
    background-color: #e74c3c;
    color: white;
}

.severity-medium {
    background-color: #f39c12;
    color: white;
}

.severity-low {
    background-color: #3498db;
    color: white;
}

.issue-body p {
    margin-top: 0.5rem;
    line-height: 1.6;
}

/* ユーティリティクラス */
.text-muted {
    color: #6c757d;
}

.text-danger {
    color: #e74c3c;
}

.text-warning {
    color: #f39c12;
}

.text-success {
    color: #27ae60;
}

/* フッター */
footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
}

/* 機能説明 */
.feature-list {
    display: grid;
    gap: 1.5rem;
}

.feature-item h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.feature-item ul {
    margin-left: 1.5rem;
    color: #555;
}

.feature-item li {
    margin-bottom: 0.3rem;
}

/* レスポンシブ */
@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        gap: 0.5rem;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .table {
        font-size: 0.9rem;
    }

    .table th,
    .table td {
        padding: 0.5rem;
    }
}