/**
 * LinkTion - メインスタイルシート
 */

/* === 変数 === */
:root {
    /* カラーパレット */
    --color-primary: #6366f1;
    --color-primary-hover: #4f46e5;
    --color-primary-light: rgba(99, 102, 241, 0.1);

    --color-bg: #0f0f14;
    --color-bg-secondary: #1a1a23;
    --color-bg-tertiary: #242430;

    --color-text: #f8f8f8;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #71717a;

    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);

    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-warning: #f59e0b;

    /* グラデーション */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    --gradient-surface: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0) 100%);

    /* シャドウ */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);

    /* サイズ */
    --sidebar-width: 260px;
    --header-height: 64px;
    --border-radius: 12px;
    --border-radius-sm: 8px;

    /* アニメーション */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
}

/* === ライトモード === */
[data-theme="light"] {
    --color-bg: #f8fafc;
    --color-bg-secondary: #ffffff;
    --color-bg-tertiary: #f1f5f9;

    --color-text: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-muted: #94a3b8;

    --color-border: rgba(0, 0, 0, 0.08);
    --color-border-hover: rgba(0, 0, 0, 0.15);

    --gradient-surface: linear-gradient(180deg, rgba(0, 0, 0, 0.02) 0%, rgba(0, 0, 0, 0) 100%);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
}

/* === リセット === */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* === ベース === */
html,
body {
    height: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    overflow-x: hidden;
}

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

/* === サイドバー === */
.sidebar {
    width: var(--sidebar-width);
    background: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar-header {
    height: var(--header-height);
    padding: 0 20px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    padding-left: 80px;
    /* serviceボタンのスペース確保 */
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 20px;
}

.nav-section-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-muted);
    padding: 8px 12px;
}

.nav-list {
    list-style: none;
}

.nav-item {
    margin-bottom: 4px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 10px 12px;
    background: transparent;
    border: none;
    border-radius: var(--border-radius-sm);
    color: var(--color-text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
}

.nav-link:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
}

.nav-item.active .nav-link {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.nav-icon {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    object-fit: cover;
}

.nav-icon-placeholder {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    color: white;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--color-border);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
}

.user-avatar-placeholder {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    color: white;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
}

/* === メインコンテンツ === */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
}

.content-header {
    height: var(--header-height);
    padding: 0 32px;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}

.page-title {
    font-size: 20px;
    font-weight: 600;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.content-body {
    flex: 1;
    padding: 32px;
    overflow-y: auto;
}

/* === ボタン === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

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

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-icon {
    font-size: 18px;
}

/* === リンク一覧 === */
.links-container {
    background: var(--color-bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.links-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border);
}

.search-input {
    width: 100%;
    max-width: 400px;
    padding: 10px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    color: var(--color-text);
    font-size: 14px;
    transition: all var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.search-input::placeholder {
    color: var(--color-text-muted);
}

.links-list {
    padding: 12px;
}

.link-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    padding: 16px 20px;
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
}

.link-card:hover {
    border-color: var(--color-border-hover);
    background: var(--color-bg-tertiary);
}

.link-main {
    flex: 1;
    min-width: 0;
}

.link-short {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.link-short-url {
    color: var(--color-primary);
    font-weight: 500;
    text-decoration: none;
}

.link-short-url:hover {
    text-decoration: underline;
}

.copy-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 14px;
    padding: 4px;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.copy-btn:hover {
    opacity: 1;
}

.link-original {
    color: var(--color-text-secondary);
    font-size: 13px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 500px;
}

.link-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}

.link-affiliation {
    color: var(--color-primary);
    font-size: 12px;
    font-weight: 500;
    padding: 2px 8px;
    background: var(--color-primary-light);
    border-radius: 4px;
    white-space: nowrap;
}

.link-clicks,
.link-date {
    color: var(--color-text-muted);
    font-size: 13px;
}

.edit-btn {
    padding: 6px 12px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

/* === QRコードボタン === */
.qr-btn {
    padding: 6px 12px;
    background: var(--color-primary-light);
    border: 1px solid var(--color-primary);
    border-radius: 6px;
    color: var(--color-primary);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.qr-btn:hover {
    background: var(--color-primary);
    color: white;
    transform: scale(1.05);
}

/* === QRコードモーダル === */
.qr-modal {
    max-width: 400px;
}

.qr-modal-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 32px 24px;
}

.qr-container {
    width: 260px;
    height: 260px;
    background: white;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: var(--shadow-md);
}

.qr-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
}

.qr-image {
    max-width: 240px;
    max-height: 240px;
    border-radius: 8px;
}

.qr-url {
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 14px;
    color: var(--color-primary);
    background: var(--color-primary-light);
    padding: 10px 16px;
    border-radius: var(--border-radius-sm);
    margin-bottom: 20px;
    word-break: break-all;
    text-align: center;
}

.qr-actions {
    display: flex;
    gap: 12px;
    width: 100%;
}

/* === 状態表示 === */
.loading-state,
.empty-state,
.error-state {
    padding: 60px 20px;
    text-align: center;
    color: var(--color-text-muted);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* === モーダル === */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 480px;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--color-text-muted);
    font-size: 20px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 24px;
}

/* === フォーム === */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
}

.form-input,
.form-select {
    width: 100%;
    padding: 12px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    color: var(--color-text);
    font-size: 14px;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23a1a1aa' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.readonly-field {
    padding: 12px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    color: var(--color-text-secondary);
    font-size: 14px;
    font-family: 'Monaco', 'Menlo', monospace;
}

/* === カスタムスラッグ入力 === */
.custom-slug-input-wrapper {
    display: flex;
    align-items: center;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    transition: all var(--transition-fast);
}

.custom-slug-input-wrapper:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.custom-slug-prefix {
    padding: 12px 0 12px 16px;
    color: var(--color-text-muted);
    font-size: 14px;
    font-family: 'Monaco', 'Menlo', monospace;
    white-space: nowrap;
}

.custom-slug-input-wrapper .form-input {
    border: none;
    background: transparent;
    padding-left: 4px;
}

.custom-slug-input-wrapper .form-input:focus {
    box-shadow: none;
}

.label-badge {
    display: inline-block;
    font-size: 9px;
    font-weight: 700;
    padding: 2px 5px;
    border-radius: 4px;
    margin-left: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    vertical-align: middle;
}

.label-badge.pro {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
    box-shadow: 0 2px 4px rgba(245, 158, 11, 0.3);
}

.form-hint {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: var(--color-text-muted);
}

/* === 通知 === */
.notification {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 14px 20px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    color: var(--color-text);
    font-size: 14px;
    box-shadow: var(--shadow-lg);
    z-index: 300;
    transform: translateY(100px);
    opacity: 0;
    transition: all var(--transition-normal);
}

.notification.show {
    transform: translateY(0);
    opacity: 1;
}

/* === ハンバーガーメニュー === */
.hamburger-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    padding: 10px;
    background: transparent;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 150;
    transition: all var(--transition-fast);
}

.hamburger-btn:hover {
    background: var(--color-bg-tertiary);
}

.hamburger-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.hamburger-btn.active {
    left: 200px;
    /* サイドバー内の右側に移動してロゴとの重なりを回避 */
}

.hamburger-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

.hamburger-btn.active span:nth-child(2) {
    opacity: 0;
}

.hamburger-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* === サイドバーオーバーレイ === */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 90;
}

.sidebar-overlay.active {
    display: block;
}

/* === デスクトップ表示（サイドバー開閉対応） === */
@media (min-width: 901px) {
    .sidebar {
        transform: translateX(0);
        transition: transform var(--transition-normal);
    }

    .sidebar.closed {
        transform: translateX(-100%);
    }

    .main-content {
        transition: margin-left var(--transition-normal);
    }

    .sidebar.closed~.main-content {
        margin-left: 0;
    }

    /* サイドバーが閉じているときはヘッダーにパディングを追加してボタンとの重なりを防ぐ */
    .sidebar.closed~.main-content .content-header {
        padding-left: 60px;
    }

    /* デスクトップではオーバーレイを表示しない */
    .sidebar-overlay.active {
        display: none;
    }
}

/* === モバイル・タブレット表示 === */
@media (max-width: 900px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .content-header {
        padding-left: 60px;
    }

    .link-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .link-meta {
        width: 100%;
        justify-content: space-between;
    }

    .link-original {
        max-width: 100%;
    }


    /* ヘッダーアクションの調整（テキスト非表示） */
    .header-actions .btn-text,
    .header-actions #custom-domain-display {
        display: none;
    }

    .header-actions .btn {
        padding: 10px 14px;
    }
}

/* === サブリスト（プロジェクト） === */
.nav-arrow-container {
    margin-left: auto;
    padding: 2px 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-fast);
}

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

.nav-arrow {
    font-size: 10px;
    transition: transform var(--transition-fast);
}

.nav-arrow.rotated {
    transform: rotate(180deg);
}

/* === プランバッジ（サイドバー） === */
.plan-badge {
    font-size: 9px;
    font-weight: 700;
    padding: 2px 5px;
    border-radius: 4px;
    margin-left: auto;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    flex-shrink: 0;
}

.plan-badge.pro {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
    box-shadow: 0 2px 4px rgba(245, 158, 11, 0.3);
}

.plan-badge.free {
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
}

/* ライトモードでのFreeバッジ調整 */
[data-theme="light"] .plan-badge.free {
    background: rgba(0, 0, 0, 0.04);
}

.nav-sublist {
    list-style: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.nav-sublist.open {
    max-height: 500px;
}

.nav-subitem {
    margin-bottom: 2px;
}

.nav-sublink {
    display: block;
    width: 100%;
    padding: 8px 12px 8px 48px;
    background: transparent;
    border: none;
    border-radius: var(--border-radius-sm);
    color: var(--color-text-muted);
    font-size: 13px;
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav-sublink:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
}

.nav-subitem.active .nav-sublink {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

/* === フォームヒント === */
.form-hint {
    margin-top: 6px;
    font-size: 12px;
    color: var(--color-text-muted);
}

/* === フォーム区切り線 === */
.form-divider {
    height: 1px;
    background: var(--color-border);
    margin: 24px 0;
}

.form-section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
}

/* === カスタムダイアログ === */
.dialog-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 500;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.dialog-overlay.active {
    opacity: 1;
    visibility: visible;
}

.dialog {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg), 0 0 60px rgba(0, 0, 0, 0.5);
    transform: scale(0.9);
    transition: transform var(--transition-fast);
}

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

.dialog-icon {
    width: 56px;
    height: 56px;
    margin: 24px auto 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.dialog-icon.warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
}

.dialog-icon.danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
}

.dialog-icon.success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
}

.dialog-icon.info {
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-primary);
}

.dialog-content {
    padding: 20px 24px;
    text-align: center;
}

.dialog-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.dialog-message {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.dialog-actions {
    display: flex;
    gap: 12px;
    padding: 0 24px 24px;
}

.dialog-actions .btn {
    flex: 1;
    justify-content: center;
}

/* === 設定ページ === */
.settings-container {
    max-width: 800px;
    margin: 0 auto;
}

.settings-section {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    margin-bottom: 24px;
    overflow: hidden;
}

.settings-section-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--color-border);
}

.settings-section-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
}

.settings-section-desc {
    font-size: 13px;
    color: var(--color-text-muted);
}

.settings-section-body {
    padding: 24px;
}

/* テーマ選択 */
.theme-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

.theme-option {
    position: relative;
    cursor: pointer;
}

.theme-option input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.theme-option-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 16px;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.theme-option:hover .theme-option-card {
    border-color: var(--color-border-hover);
    background: var(--color-bg-tertiary);
}

.theme-option input:checked+.theme-option-card {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.theme-option-icon {
    width: 64px;
    height: 48px;
    margin-bottom: 12px;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    position: relative;
}

.theme-option-icon.dark {
    background: linear-gradient(135deg, #1a1a23 50%, #0f0f14 50%);
}

.theme-option-icon.light {
    background: linear-gradient(135deg, #ffffff 50%, #f8fafc 50%);
}

.theme-option-icon.system {
    background: linear-gradient(135deg, #ffffff 50%, #1a1a23 50%);
}

.theme-option-icon::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 8px;
    right: 8px;
    height: 6px;
    border-radius: 3px;
}

.theme-option-icon.dark::after {
    background: linear-gradient(90deg, #6366f1, #a855f7);
}

.theme-option-icon.light::after {
    background: linear-gradient(90deg, #6366f1, #a855f7);
}

.theme-option-icon.system::after {
    background: linear-gradient(90deg, #6366f1, #a855f7);
}

.theme-option-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 4px;
}

.theme-option-desc {
    font-size: 12px;
    color: var(--color-text-muted);
    text-align: center;
}

.theme-option input:checked+.theme-option-card .theme-option-name {
    color: var(--color-primary);
}

/* 設定ページ隠しコンテンツ */
.settings-page {
    display: none;
}

.settings-page.active {
    display: block;
}

.links-page {
    display: block;
}

.links-page.hidden {
    display: none;
}

/* === サービスボタン（アプリランチャー） === */
.service-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 28px;
    padding: 0 8px;
    border-radius: 6px;
    border: 1px solid var(--color-border);
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.service-button:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
    border-color: var(--color-border-hover);
}

/* アプリランチャー対策: 強制的に相対配置にして重なりを防ぐ */
#service-button {
    position: absolute !important;
    left: 0 !important;
    transform: translateY(-50%);
    top: 50%;
    z-index: 10;
    margin: 0 !important;
}

/* === プランバッジ === */
.plan-badge {
    font-size: 9px;
    font-weight: 700;
    padding: 2px 5px;
    border-radius: 4px;
    margin-left: auto;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    flex-shrink: 0;
}

.plan-badge.pro {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
    box-shadow: 0 2px 4px rgba(245, 158, 11, 0.3);
}

.plan-badge.free {
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
}

/* ライトモードでのFreeバッジ調整 */
[data-theme="light"] .plan-badge.free {
    background: rgba(0, 0, 0, 0.04);
}


/* === ゲストビュー === */
.guest-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.guest-header {
    height: 70px;
    padding: 0 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-border);
}

.guest-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 60px 20px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.hero-section {
    text-align: center;
    margin-bottom: 80px;
    width: 100%;
    max-width: 800px;
}

.hero-section h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 18px;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
}

.guest-create-form-container {
    background: var(--color-bg-secondary);
    padding: 30px;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
}

.guest-input-group {
    display: flex;
    gap: 12px;
}

.guest-url-input {
    flex: 1;
    padding: 16px 20px;
    font-size: 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    background: var(--color-bg);
    color: var(--color-text);
}

.guest-url-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px var(--color-primary-light);
}

.btn-large {
    padding: 0 30px;
    font-size: 16px;
    font-weight: 600;
}

.guest-result {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hidden {
    display: none;
}

.success-message {
    color: var(--color-success);
    font-weight: 600;
    margin-bottom: 10px;
    text-align: left;
}

.result-box {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--color-bg);
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-border);
}

.short-url-link {
    flex: 1;
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
    font-size: 18px;
}

.short-url-link:hover {
    text-decoration: underline;
}

.copy-btn-large {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    padding: 8px 16px;
    border-radius: 6px;
    color: var(--color-text);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.copy-btn-large:hover {
    background: var(--color-bg);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.features-section {
    width: 100%;
}

.upsell-card {
    background: var(--gradient-surface);
    border: 1px solid var(--color-primary-light);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
}

.upsell-card h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
}

.upsell-card>p {
    color: var(--color-text-secondary);
    margin-bottom: 40px;
    font-size: 16px;
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
    text-align: left;
}

.feature-item {
    background: rgba(255, 255, 255, 0.03);
    padding: 24px;
    border-radius: 16px;
    border: 1px solid var(--color-border);
    display: flex;
    gap: 16px;
    transition: transform var(--transition-fast);
}

.feature-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-primary);
}

.feature-icon {
    font-size: 32px;
}

.feature-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text);
}

.feature-content p {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.guest-footer {
    padding: 40px 20px;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 12px;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto 20px;
}

.footer-brand {
    text-align: left;
}

.footer-brand p {
    color: var(--color-text-muted);
    font-size: 12px;
    margin-top: 4px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-primary);
}

.footer-copyright {
    font-size: 11px;
    color: var(--color-text-muted);
}

/* === ゲストヘッダー改善 === */
.guest-header-actions {
    display: flex;
    align-items: center;
    gap: 24px;
}

.guest-nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.guest-nav-link:hover {
    color: var(--color-primary);
}

/* === ヒーローセクション改善 === */
.hero-badge {
    display: inline-block;
    background: var(--color-primary-light);
    color: var(--color-primary);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

.btn-icon-arrow {
    font-size: 18px;
    transition: transform var(--transition-fast);
}

.btn:hover .btn-icon-arrow {
    transform: translateX(4px);
}

.form-note {
    margin-top: 16px;
    color: var(--color-text-muted);
    font-size: 13px;
    text-align: center;
}

/* === ハイライト機能セクション === */
.highlight-features {
    display: flex;
    justify-content: center;
    gap: 60px;
    padding: 40px 0;
    margin-bottom: 60px;
    border-bottom: 1px solid var(--color-border);
    width: 100%;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.highlight-icon {
    font-size: 32px;
}

.highlight-text {
    display: flex;
    flex-direction: column;
}

.highlight-number {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text);
}

.highlight-label {
    font-size: 13px;
    color: var(--color-text-muted);
}

/* === 主要機能セクション === */
.main-features-section {
    width: 100%;
    margin-bottom: 80px;
}

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

.section-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-desc {
    font-size: 16px;
    color: var(--color-text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-primary);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.15);
}

.feature-card-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
}

.feature-card p {
    color: var(--color-text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

/* === 使い方セクション === */
.how-it-works-section {
    width: 100%;
    margin-bottom: 80px;
    padding: 60px 0;
    background: var(--color-bg-secondary);
    border-radius: 24px;
}

.steps-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 24px 32px;
    min-width: 200px;
}

.step-number {
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
    box-shadow: var(--shadow-glow);
}

.step-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text);
}

.step-content p {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.step-arrow {
    font-size: 32px;
    color: var(--color-primary);
    font-weight: 300;
}

/* === Proプランセクション === */
.pro-features-section {
    width: 100%;
    margin-bottom: 80px;
}

.pro-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(168, 85, 247, 0.1) 100%);
    border: 2px solid var(--color-primary);
    border-radius: 24px;
    padding: 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.pro-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}

.pro-badge {
    display: inline-block;
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.pro-card h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
}

.pro-desc {
    color: var(--color-text-secondary);
    font-size: 16px;
    margin-bottom: 40px;
}

.pro-features-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
    text-align: left;
}

.pro-feature-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.pro-feature-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-primary);
}

.pro-check {
    color: var(--color-success);
    font-size: 20px;
    font-weight: 700;
}

.pro-feature-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.pro-feature-text strong {
    color: var(--color-text);
    font-size: 15px;
}

.pro-feature-text span {
    color: var(--color-text-secondary);
    font-size: 13px;
}

/* === CTAセクション === */
.cta-section {
    text-align: center;
    padding: 60px 40px;
    background: var(--gradient-primary);
    border-radius: 24px;
    margin-bottom: 80px;
    width: 100%;
}

.cta-section h2 {
    font-size: 32px;
    font-weight: 700;
    color: white;
    margin-bottom: 12px;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 16px;
    margin-bottom: 32px;
}

.btn-glow {
    background: white;
    color: var(--color-primary);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.btn-glow:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

/* === レスポンシブ === */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pro-features-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .guest-header {
        padding: 0 20px;
    }

    .guest-header-actions {
        gap: 16px;
    }

    .guest-nav-link {
        display: none;
    }

    .hero-section h1 {
        font-size: 32px;
    }

    .hero-desc {
        font-size: 16px;
    }

    .guest-input-group {
        flex-direction: column;
    }

    .guest-create-form-container {
        padding: 20px;
    }

    .highlight-features {
        flex-direction: column;
        gap: 32px;
        padding: 32px 20px;
    }

    .highlight-item {
        justify-content: flex-start;
    }

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

    .section-title {
        font-size: 28px;
    }

    .steps-container {
        flex-direction: column;
    }

    .step-arrow {
        transform: rotate(90deg);
    }

    .pro-card {
        padding: 32px 20px;
    }

    .pro-card h2 {
        font-size: 24px;
    }

    .cta-section {
        padding: 40px 20px;
    }

    .cta-section h2 {
        font-size: 24px;
    }

    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .footer-brand {
        text-align: center;
    }
}

/* === サイドバーフッター（ログアウトボタン等） === */
.sidebar-footer .footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.user-info {
    flex: 1;
    min-width: 0;
}

.user-name {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.logout-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    color: var(--color-text-muted);
    text-decoration: none;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    flex-shrink: 0;
}

.logout-btn:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-danger);
    border-color: var(--color-border);
}

/* === 分析テーブル === */
.analytics-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    margin-top: 10px;
}

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

.analytics-table th {
    font-weight: 600;
    color: var(--color-text-muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.analytics-table td {
    color: var(--color-text);
}

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

.analytics-table tr:hover {
    background-color: var(--color-bg-tertiary);
}

.analytics-empty {
    text-align: center;
    padding: 30px;
    color: var(--color-text-muted);
}

.analytics-modal-body {
    padding: 0;
    max-height: 70vh;
    overflow-y: auto;
}

/* === 分析ボタン === */
.analytics-btn {
    padding: 6px 12px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-right: 4px;
}

.analytics-btn:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-color: var(--color-primary);
}


/* カスタムスラッグドメイン選択 */
.custom-slug-domain-select {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    font-size: 14px;
    font-family: inherit;
    padding: 0 4px 0 0;
    cursor: pointer;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%2371717a%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E');
    background-repeat: no-repeat;
    background-position: right center;
    background-size: 8px;
    padding-right: 14px;
}

.custom-slug-domain-select:hover {
    color: var(--color-text);
}

.custom-slug-domain-select option {
    background-color: var(--color-bg-secondary);
    color: var(--color-text);
}

/* Footer Styles */
.app-footer {
    padding: 24px 40px;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 12px;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
    margin-top: auto;
}

.footer-links {
    margin-bottom: 8px;
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

.footer-separator {
    color: var(--color-text-muted);
    margin: 0 12px;
}

.footer-copyright {
    color: var(--color-text-muted);
    font-size: 11px;
}

/* Update guest-footer to include new structure */
.guest-footer .footer-links {
    margin-bottom: 12px;
}

.guest-footer .footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.guest-footer .footer-links a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

.guest-footer .footer-separator {
    color: var(--color-text-muted);
    margin: 0 12px;
}

.guest-footer .footer-copyright {
    color: var(--color-text-muted);
    font-size: 11px;
}