/* ====================================
   法的ページ統一デザイン v3
   ==================================== */

:root {
    --page-max-width: 960px;
    --background-main: #f5f7fa;
    --surface-base: #ffffff;
    --surface-muted: #eef1f6;
    --border-color: #d8dee6;
    --text-primary: #1f2933;
    --text-secondary: #4b5563;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
}

@media (prefers-color-scheme: dark) {
    :root {
        --background-main: #0f172a;
        --surface-base: #131c2f;
        --surface-muted: #1b253a;
        --border-color: #1f2a3d;
        --text-primary: #e2e8f0;
        --text-secondary: #94a3b8;
        --accent-color: #60a5fa;
        --accent-hover: #3b82f6;
    }
}

:root[data-manual-theme="dark"] {
    --background-main: #0f172a;
    --surface-base: #131c2f;
    --surface-muted: #1b253a;
    --border-color: #1f2a3d;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --accent-color: #60a5fa;
    --accent-hover: #3b82f6;
}

body {
    margin: 0;
    padding: 0;
    background-color: var(--background-main);
    font-family: "Inter", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-primary);
}

/* 共通レイアウト */
.page-container {
    max-width: var(--page-max-width);
    margin: 0 auto;
    padding: 96px 24px 72px 24px;
}

.page-header {
    text-align: center;
    margin-bottom: 48px;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    margin: 0;
}

.page-content {
    background-color: var(--surface-base);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
    padding: 56px 64px;
}

.intro-text {
    margin-bottom: 40px;
}

.intro-text p {
    margin: 0;
    line-height: 1.8;
    color: var(--text-secondary);
}

.content-section {
    margin-bottom: 48px;
}

.content-section:last-of-type {
    margin-bottom: 0;
}

.section-title {
    font-size: 1.625rem;
    font-weight: 600;
    margin: 0 0 20px 0;
    color: var(--text-primary);
}

.section-content p {
    line-height: 1.8;
    font-size: 1rem;
    margin: 0 0 16px 0;
    color: var(--text-secondary);
}

.section-content p:last-child {
    margin-bottom: 0;
}

.page-footer-info {
    margin-top: 48px;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    text-align: right;
}

.last-updated {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

/* リスト */
.feature-list,
.bulleted-list,
.link-list {
    list-style: none;
    padding-left: 0;
    margin: 0 0 20px 0;
}

.numbered-list {
    list-style: decimal;
    padding-left: 20px;
    margin: 0 0 20px 20px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.feature-list li,
.bulleted-list li,
.link-list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 12px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.feature-list li::before,
.bulleted-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 11px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--accent-color);
}

.feature-list li:last-child,
.bulleted-list li:last-child,
.link-list li:last-child {
    margin-bottom: 0;
}

.numbered-list li {
    margin-bottom: 12px;
}

.numbered-list li:last-child {
    margin-bottom: 0;
}

.section-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

.note-text {
    background-color: var(--surface-muted);
    border-left: 4px solid var(--accent-color);
    padding: 16px 20px;
    border-radius: 12px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin: 24px 0 0 0;
}

.warning-text {
    background-color: rgba(239, 68, 68, 0.12);
    border-left: 4px solid #ef4444;
    padding: 16px 20px;
    border-radius: 12px;
    line-height: 1.8;
    color: #b91c1c;
    margin: 24px 0 0 0;
}

@media (prefers-color-scheme: dark) {
    .warning-text {
        background-color: rgba(248, 113, 113, 0.18);
        color: #fca5a5;
    }
}

.link-primary {
    color: var(--accent-color);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease, color 0.2s ease;
    display: inline-block;
    padding: 2px 0;
}

.link-primary:hover {
    color: var(--accent-hover);
    border-bottom-color: var(--accent-hover);
}

@media (max-width: 768px) {
    .link-primary {
        padding: 4px 0;
        font-size: 0.9375rem;
    }
}

/* TOPボタン */
.page-top-button {
    position: fixed;
    top: 24px;
    left: max(24px, calc((100vw - 960px) / 2 + 24px)); /* ページ中央コンテンツの左端から24px、最小24px */
    z-index: 1000;
}

.btn-top {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 12px 24px;
    background-color: var(--surface-muted);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    text-decoration: none;
}

.btn-top:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 36px rgba(15, 23, 42, 0.12);
}

.btn-top:active {
    transform: translateY(0);
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.08);
}

.btn-top:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* 設定ページ特有 */

/* 設定ページ特有 */
.info-box {
    background-color: var(--surface-muted);
    border-radius: 12px;
    padding: 18px;
    display: inline-block;
    border: 1px solid var(--border-color);
    margin-bottom: 12px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

.stat-card {
    background-color: var(--surface-muted);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    text-align: center;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.stat-value {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--text-primary);
}

.setting-item {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px dashed var(--border-color);
}

.setting-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.setting-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: var(--text-primary);
}

.setting-checkbox {
    width: 18px;
    height: 18px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.setting-description {
    margin-top: 12px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.btn-danger {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: 10px;
    border: none;
    background-color: #ef4444;
    color: #ffffff;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-danger:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(239, 68, 68, 0.3);
}

.btn-danger:active {
    transform: translateY(0);
}

.btn-danger:focus-visible {
    outline: 2px solid #fca5a5;
    outline-offset: 2px;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.btn-icon {
    display: inline-block;
    margin-right: 6px;
}

/* レスポンシブ */
@media (max-width: 1024px) {
    .page-container {
        padding: 88px 20px 64px 20px;
    }
    
    .page-content {
        padding: 48px;
    }
    
    .page-top-button {
        left: 20px; /* タブレットでは固定位置 */
    }
    
    .page-header {
        margin-bottom: 40px;
    }
}

@media (max-width: 768px) {
    .page-container {
        padding: 80px 16px 56px 16px;
    }
    
    .page-content {
        padding: 36px 24px;
    }
    
    .page-header {
        margin-bottom: 36px;
    }
    
    .page-title {
        font-size: 2rem;
        letter-spacing: 0.02em;
    }
    
    .section-title {
        font-size: 1.375rem;
        margin-bottom: 16px;
    }
    
    .content-section {
        margin-bottom: 40px;
    }
    
    .page-top-button {
        top: 12px;
        left: 12px;
    }
    
    .btn-top {
        padding: 8px 16px;
        font-size: 0.875rem;
    }
    
    /* 匿名ID情報のレスポンシブ対応 */
    .info-box {
        padding: 14px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .note-text, .warning-text {
        font-size: 0.9375rem;
        padding: 14px 18px;
        margin-top: 20px;
    }
    
    .intro-text p {
        font-size: 0.9375rem;
    }
}

@media (max-width: 480px) {
    .page-container {
        padding: 72px 12px 48px 12px;
    }
    
    .page-content {
        padding: 24px 16px;
        border-radius: 12px;
        box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
    }
    
    .page-header {
        margin-bottom: 32px;
    }
    
    .page-title {
        font-size: 1.75rem;
        letter-spacing: 0.01em;
    }
    
    .section-title {
        font-size: 1.25rem;
        margin-bottom: 14px;
    }
    
    .content-section {
        margin-bottom: 36px;
    }
    
    .page-top-button {
        top: 10px;
        left: 10px;
    }
    
    .btn-top {
        padding: 7px 14px;
        font-size: 0.8125rem;
        gap: 4px;
        box-shadow: 0 6px 20px rgba(15, 23, 42, 0.08);
    }
    
    .info-box {
        padding: 12px;
    }
    
    .section-content p {
        font-size: 0.9375rem;
        line-height: 1.7;
    }
    
    .intro-text p {
        font-size: 0.875rem;
        line-height: 1.7;
    }
    
    .note-text, .warning-text {
        font-size: 0.875rem;
        padding: 12px 16px;
        margin-top: 16px;
        border-radius: 10px;
    }
    
    .btn-danger {
        width: 100%;
        justify-content: center;
        padding: 14px 20px;
        font-size: 0.9375rem;
    }
    
    .page-footer-info {
        margin-top: 40px;
        padding-top: 16px;
    }
    
    .last-updated {
        font-size: 0.875rem;
    }
    
    /* リストの調整 */
    .feature-list li,
    .bulleted-list li,
    .link-list li,
    .numbered-list li {
        font-size: 0.9375rem;
        line-height: 1.7;
        margin-bottom: 10px;
    }
}

/* 超小型デバイス対応 */
@media (max-width: 360px) {
    .page-container {
        padding: 68px 10px 44px 10px;
    }
    
    .page-content {
        padding: 20px 14px;
    }
    
    .page-title {
        font-size: 1.625rem;
    }
    
    .section-title {
        font-size: 1.125rem;
    }
    
    .page-top-button {
        top: 8px;
        left: 8px;
    }
    
    .btn-top {
        padding: 6px 12px;
        font-size: 0.75rem;
    }
}