/* ===================================
   Information ページ - スタイル
   =================================== */

:root {
    --primary: #8b5cf6;
    --accent: #22d3ee;
    --accent-glow: rgba(34, 211, 238, 0.4);
    --bg-dark: #0a0a0f;
    --glass-bg: rgba(15, 15, 25, 0.9);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #f1f5f9;
    --text-dim: #94a3b8;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-dark);
    color: var(--text-main);
    overflow: hidden;
}

/* 背景 */
.bg-effects {
    position: fixed;
    inset: 0;
    z-index: -1;
}

.bg-gradient {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(139, 92, 246, 0.15), transparent 70%);
}

.bg-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
}

.bg-glow-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -100px;
    left: -100px;
}

.bg-glow-2 {
    width: 300px;
    height: 300px;
    background: var(--accent);
    bottom: -50px;
    right: -50px;
}

/* ナビゲーション */
.top-nav {
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 24px;
}

.back-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-dim);
    text-decoration: none;
    transition: var(--transition);
}

.back-btn:hover {
    color: var(--text-main);
    transform: translateX(-4px);
}

.back-btn svg {
    width: 24px;
    fill: currentColor;
}

.page-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #fff, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.search-box {
    position: relative;
    width: 300px;
}

.search-box svg {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    fill: var(--text-dim);
}

.search-box input {
    width: 100%;
    padding: 10px 40px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: #fff;
    outline: none;
    transition: var(--transition);
}

.search-box input:focus {
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 15px var(--accent-glow);
}

/* レイアウト */
.main-layout {
    display: flex;
    height: calc(100vh - 70px);
}

/* サイドバー */
.info-sidebar {
    width: 260px;
    border-right: 1px solid var(--glass-border);
    padding: 30px 20px;
    overflow-y: auto;
    background: rgba(0, 0, 0, 0.2);
}

.sidebar-header {
    font-family: 'Outfit', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-dim);
    letter-spacing: 0.15em;
    margin-bottom: 24px;
    padding-left: 10px;
}

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

.tag-link {
    display: block;
    padding: 12px 16px;
    color: var(--text-dim);
    text-decoration: none;
    border-radius: 12px;
    transition: var(--transition);
    font-size: 0.95rem;
    margin-bottom: 6px;
}

.tag-link:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--accent);
    transform: translateX(5px);
}

.tag-link.active {
    background: rgba(34, 211, 238, 0.1);
    color: var(--accent);
    border-left: 3px solid var(--accent);
}

/* メインコンテンツ */
.info-content {
    flex: 1;
    overflow-y: auto;
    padding: 60px 5%;
    display: flex;
    flex-direction: column;
    align-items: center;
    scroll-behavior: smooth;
}

.info-item {
    width: 100%;
    max-width: 900px;
    margin-bottom: 80px;
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.info-item-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--glass-border);
}

.info-item-title-text {
    font-family: 'Outfit', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, #8b5cf6 0%, #22d3ee 50%, #f472b6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    animation: titleGlow 3s ease-in-out infinite alternate;
    filter: drop-shadow(0 0 8px rgba(139, 92, 246, 0.5));
}

@keyframes titleGlow {
    0% {
        filter: drop-shadow(0 0 8px rgba(139, 92, 246, 0.5));
    }

    50% {
        filter: drop-shadow(0 0 15px rgba(34, 211, 238, 0.6));
    }

    100% {
        filter: drop-shadow(0 0 12px rgba(244, 114, 182, 0.5));
    }
}

.info-item-title-actions {
    display: flex;
    gap: 10px;
    opacity: 0.3;
    transition: opacity var(--transition);
}

.info-item:hover .info-item-title-actions {
    opacity: 1;
}

.title-action-btn {
    padding: 6px 12px;
    font-size: 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    color: var(--text-dim);
    cursor: pointer;
    transition: var(--transition);
}

.title-action-btn:hover {
    background: var(--glass-border);
    color: #fff;
}

.title-action-btn.delete-title:hover {
    background: #ef4444;
    border-color: #ef4444;
}

/* ブロックデザイン - フレックス（リサイズ対応） */
.info-blocks-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: flex-start;
}

.info-item {
    width: 100%;
    max-width: 1400px;
    /* リサイズ用に広げる */
    margin-bottom: 80px;
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.info-block-wrapper {
    position: relative;
    padding: 24px 30px;
    border-left: 4px solid var(--primary);
    background: transparent;
    /* 背景なし */
    border-radius: 0 16px 16px 0;
    transition: all var(--transition);
    /* かっこいい枠線エフェクト */
    box-shadow: inset 0 0 10px rgba(139, 92, 246, 0.05);
    border: 1px solid rgba(139, 92, 246, 0.1);
    border-left: 4px solid var(--primary);
}

.info-block-wrapper:hover {
    border-color: var(--accent);
    box-shadow: 0 0 20px rgba(34, 211, 238, 0.1);
}

.info-block-body {
    line-height: 1.8;
    color: #cbd5e1;
    white-space: pre-wrap;
    font-size: 1rem;
}

.info-block-actions {
    position: absolute;
    top: 10px;
    right: 10px;
    display: flex;
    gap: 8px;
    opacity: 0;
    transition: opacity var(--transition);
}

.info-block-wrapper:hover .info-block-actions {
    opacity: 1;
}

.action-icon-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-dark);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    color: var(--text-dim);
    cursor: pointer;
    transition: var(--transition);
}

.action-icon-btn svg {
    width: 16px;
}

.action-icon-btn:hover {
    color: var(--accent);
    border-color: var(--accent);
}

.delete-block:hover {
    color: #ef4444 !important;
    border-color: #ef4444 !important;
}

/* 空メッセージ */
.empty-message {
    text-align: center;
    color: var(--text-dim);
    padding: 100px 0;
    font-size: 1.2rem;
}

/* 追加ボタン（タイトル） */
.add-section-wrapper {
    margin-top: 40px;
    margin-bottom: 100px;
}

.add-section-btn {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 18px 40px;
    background: rgba(34, 211, 238, 0.03);
    border: 2px dashed var(--glass-border);
    border-radius: 20px;
    color: var(--accent);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.add-section-btn:hover {
    border-color: var(--accent);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--accent-glow);
    background: rgba(34, 211, 238, 0.08);
}

.btn-icon {
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

/* モーダル */
.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 550px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 28px;
    padding: 40px;
    animation: slideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: var(--text-dim);
    font-size: 1.5rem;
    cursor: pointer;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 12px;
    color: var(--text-dim);
    font-size: 0.9rem;
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: 14px;
    color: #fff;
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.06);
}

.btn-primary {
    width: 100%;
    padding: 18px;
    background: var(--accent);
    color: var(--bg-dark);
    font-weight: 800;
    border: none;
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 25px var(--accent-glow);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.95);
    }

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

@media (max-width: 768px) {
    .info-sidebar {
        display: none;
    }

    .info-content {
        padding: 40px 20px;
    }

    .search-box {
        width: 150px;
    }
}

/* リサイザー */
.resizer {
    position: absolute;
    top: 0;
    right: 0;
    width: 6px;
    height: 100%;
    cursor: col-resize;
    z-index: 10;
    transition: background 0.2s;
}

.resizer:hover {
    background: rgba(34, 211, 238, 0.5);
    /* Accent color */
}

/* リサイズ中は選択不可 */
body.resizing {
    user-select: none;
}