/* ===== Rules Page ===== */
.rules-screen {
    min-height: 100vh;
    background: var(--color-bg);
    color: var(--color-text);
    overflow-y: auto;
}

/* ヒーローセクション */
.rules-hero {
    position: relative;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, #1a1a3e, #2a1a4e, #1a2a4e);
}

.rules-hero-bg {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: url('/mayoteiru/images/BG/Noon.webp') center/cover no-repeat;
    opacity: 0.3;
}

.rules-hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.rules-hero h1 {
    font-size: 2.4rem;
    font-weight: 700;
    margin: 0 0 8px;
    text-shadow: 0 2px 16px rgba(0,0,0,0.6);
}

.rules-hero p {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin: 0;
}

/* 戻るボタン */
.rules-back-btn {
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 100;
    background: rgba(26, 26, 46, 0.85);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    padding: 8px 20px;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.2s;
    backdrop-filter: blur(4px);
}

.rules-back-btn:hover {
    background: rgba(74, 144, 217, 0.3);
}

/* ナビゲーション */
.rules-nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(26, 26, 46, 0.95);
    border-bottom: 1px solid var(--color-border);
    padding: 0 16px;
    backdrop-filter: blur(8px);
}

.rules-nav-inner {
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    gap: 0;
    overflow-x: auto;
    scrollbar-width: none;
}

.rules-nav-inner::-webkit-scrollbar {
    display: none;
}

.rules-nav-link {
    padding: 12px 16px;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    text-decoration: none;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
}

.rules-nav-link:hover,
.rules-nav-link.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* メインコンテンツ */
.rules-body {
    max-width: 960px;
    margin: 0 auto;
    padding: 32px 24px 80px;
}

/* セクション */
.rules-section {
    margin-bottom: 56px;
    scroll-margin-top: 60px;
}

.rules-section h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin: 0 0 20px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--color-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.rules-section h2 .section-icon {
    width: 28px;
    height: 28px;
    border-radius: 4px;
}

.rules-section h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin: 28px 0 12px;
    color: var(--color-primary);
}

.rules-section p {
    line-height: 1.75;
    margin: 0 0 12px;
    color: #ddd;
}

/* カードボックス */
.rules-box {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 20px;
    margin: 16px 0;
}

.rules-box-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 10px;
}

/* 属性カード */
.element-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    margin: 16px 0;
}

.element-card {
    background: var(--color-bg-light);
    border-radius: 10px;
    padding: 16px;
    border: 1px solid var(--color-border);
    transition: transform 0.2s, box-shadow 0.2s;
}

.element-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}

.element-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.element-frame-img {
    width: 40px;
    height: 60px;
    border-radius: 4px;
    object-fit: cover;
}

.element-card-name {
    font-size: 1.1rem;
    font-weight: 700;
}

.element-card-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.5;
    margin-bottom: 10px;
}

.element-card-samples {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.element-sample-card {
    width: 54px;
    height: 76px;
    border-radius: 4px;
    object-fit: cover;
    border: 1px solid rgba(255,255,255,0.15);
    transition: transform 0.2s;
}

.element-sample-card:hover {
    transform: scale(1.15);
    z-index: 1;
}

.element-refess { border-left: 3px solid var(--color-refess); }
.element-lawtia { border-left: 3px solid var(--color-lawtia); }
.element-gowen { border-left: 3px solid var(--color-gowen); }
.element-falkow { border-left: 3px solid var(--color-falkow); }

/* ステータステーブル */
.rules-table {
    width: 100%;
    border-collapse: collapse;
    margin: 12px 0;
    font-size: 0.9rem;
}

.rules-table th,
.rules-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.rules-table th {
    background: rgba(74, 144, 217, 0.1);
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.85rem;
}

.rules-table tr:hover td {
    background: rgba(255,255,255,0.03);
}

/* フィールド図 */
.field-diagram {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    margin: 16px 0;
    padding: 20px;
    background: var(--color-bg-light);
    border-radius: 10px;
    border: 1px solid var(--color-border);
}

.field-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.field-row {
    display: flex;
    gap: 4px;
}

.field-cell {
    width: 56px;
    height: 56px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
}

.field-cell img {
    width: 100%;
    height: 100%;
    border-radius: 4px;
    object-fit: cover;
    opacity: 0.7;
}

.field-separator {
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.row-label {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    width: 40px;
    text-align: right;
    margin-right: 4px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.field-row-wrap {
    display: flex;
    align-items: center;
}

/* フェーズフロー */
.phase-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin: 20px 0;
}

.phase-card {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 12px 16px;
    text-align: center;
    min-width: 120px;
}

.phase-card-img {
    width: 100px;
    height: auto;
    margin-bottom: 6px;
    border-radius: 4px;
}

.phase-card-name {
    font-size: 0.9rem;
    font-weight: 600;
}

.phase-card-desc {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.phase-arrow {
    font-size: 1.2rem;
    color: var(--color-text-muted);
}

/* 時間帯セクション */
.time-cards {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin: 16px 0;
}

.time-card {
    border-radius: 10px;
    overflow: hidden;
    width: 180px;
    border: 1px solid var(--color-border);
    text-align: center;
}

.time-card-img {
    width: 100%;
    height: 100px;
    object-fit: cover;
}

.time-card-body {
    padding: 10px;
}

.time-card-icon {
    width: 32px;
    height: 32px;
    margin-bottom: 4px;
}

.time-card-name {
    font-size: 0.9rem;
    font-weight: 600;
}

/* スキルタイプ */
.skill-types {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 12px;
    margin: 16px 0;
}

.skill-type-item {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 12px;
}

.skill-type-icon {
    width: 48px;
    height: 48px;
    border-radius: 4px;
    flex-shrink: 0;
}

.skill-type-name {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 2px;
}

.skill-type-desc {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    line-height: 1.4;
}

/* ハイライトボックス */
.rules-highlight {
    background: rgba(74, 144, 217, 0.1);
    border-left: 3px solid var(--color-primary);
    padding: 12px 16px;
    border-radius: 0 6px 6px 0;
    margin: 12px 0;
    font-size: 0.9rem;
    line-height: 1.6;
}

.rules-warning {
    background: rgba(240, 192, 64, 0.1);
    border-left: 3px solid var(--color-refess);
    padding: 12px 16px;
    border-radius: 0 6px 6px 0;
    margin: 12px 0;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ステップリスト */
.rules-steps {
    counter-reset: step-counter;
    list-style: none;
    padding: 0;
    margin: 12px 0;
}

.rules-steps li {
    counter-increment: step-counter;
    padding: 10px 10px 10px 48px;
    position: relative;
    margin-bottom: 4px;
    line-height: 1.6;
    font-size: 0.9rem;
}

.rules-steps li::before {
    content: counter(step-counter);
    position: absolute;
    left: 8px;
    top: 10px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
}

/* アクションテーブル内のアイコン */
.action-icon {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 6px;
}

/* FAQ */
.faq-item {
    margin-bottom: 16px;
}

.faq-q {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 4px;
    color: var(--color-primary);
}

.faq-a {
    font-size: 0.9rem;
    color: #ccc;
    line-height: 1.6;
    padding-left: 16px;
    border-left: 2px solid var(--color-border);
}

/* レスポンシブ */
@media (max-width: 640px) {
    .rules-hero { height: 200px; }
    .rules-hero h1 { font-size: 1.6rem; }
    .rules-body { padding: 20px 16px 60px; }
    .element-cards { grid-template-columns: 1fr; }
    .time-cards { flex-direction: column; align-items: center; }
    .phase-flow { flex-direction: column; }
    .phase-arrow { transform: rotate(90deg); }
    .field-cell { width: 48px; height: 48px; }
}