/* style.css - Modern Glassmorphism & Dark Theme for Docs */

:root {
    --bg-color: #0f111a;
    --panel-bg: rgba(30, 32, 41, 0.65);
    --panel-border: rgba(255, 255, 255, 0.08);
    --text-primary: #e2e8f0;
    --text-muted: #94a3b8;
    --accent-color: #3b82f6;
    --accent-glow: rgba(59, 130, 246, 0.5);
    --accent-hover: #60a5fa;
    --code-bg: #1e1e2e;
    --sidebar-width: 280px;
    --glass-blur: 16px;
}

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

body.dark-theme {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Dynamic Background Shapes */
.bg-shape {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    opacity: 0.4;
    animation: float 20s infinite ease-in-out alternate;
}

.shape-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59,130,246,0.3) 0%, rgba(15,17,26,0) 70%);
    top: -100px;
    left: -100px;
}

.shape-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(139,92,246,0.2) 0%, rgba(15,17,26,0) 70%);
    bottom: -50px;
    right: -100px;
    animation-delay: -5s;
}

.shape-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(16,185,129,0.15) 0%, rgba(15,17,26,0) 70%);
    top: 40%;
    left: 30%;
    animation-duration: 25s;
}

@keyframes float {
    0% { transform: translateY(0) scale(1); }
    100% { transform: translateY(30px) scale(1.05); }
}

/* Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: rgba(15, 17, 26, 0.5);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-right: 1px solid var(--panel-border);
    position: fixed;
    height: 100vh;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    z-index: 10;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 3rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--panel-border);
    flex-shrink: 0;
}

.sidebar-header .logo {
    font-size: 24px;
    filter: drop-shadow(0 0 8px rgba(255,255,255,0.3));
}

.sidebar-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    background: linear-gradient(90deg, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.95rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: block;
    position: relative;
    overflow: hidden;
}

.nav-item:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
    transform: translateX(4px);
}

.nav-item.active {
    color: #fff;
    background: rgba(59, 130, 246, 0.15);
    border-left: 3px solid var(--accent-color);
    box-shadow: inset 0 0 20px rgba(59, 130, 246, 0.05);
}

.nav-item.external {
    margin-top: 1rem;
    margin-bottom: 2rem;
    border: 1px solid var(--panel-border);
    text-align: center;
    flex-shrink: 0;
}

.nav-item.external:hover {
    border-color: var(--accent-color);
    box-shadow: 0 0 15px var(--accent-glow);
    transform: translateY(-2px);
}

/* Main Content */
.content-area {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 2.5rem 4rem;
    max-width: 1200px;
}

.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--panel-border);
    border-radius: 16px;
    padding: 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    min-height: calc(100vh - 5rem);
    animation: fadeUp 0.6s ease-out forwards;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Typography & Content Styles */
h1, h2, h3 {
    color: var(--text-primary);
    margin-top: 1.5em;
    margin-bottom: 0.75em;
    font-weight: 600;
}

h1 {
    font-size: 2.5rem;
    margin-top: 0;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #fff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--panel-border);
}

h3 {
    font-size: 1.25rem;
    color: #e2e8f0;
}

p {
    margin-bottom: 1.25rem;
    color: var(--text-muted);
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

ul, ol {
    margin-left: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

li {
    margin-bottom: 0.5rem;
}

/* Emphasized Text */
strong, b {
    color: #e2e8f0;
    font-weight: 600;
}

/* Callouts / Alerts */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 8px;
    margin: 1.5rem 0;
    background: rgba(59, 130, 246, 0.1);
    border-left: 4px solid var(--accent-color);
    display: flex;
    gap: 12px;
}

.alert-icon {
    font-size: 1.2rem;
}

.alert-content p {
    margin-bottom: 0;
    color: #cbd5e1;
}

.alert.warning {
    background: rgba(245, 158, 11, 0.1);
    border-left-color: #f59e0b;
}

.alert.success {
    background: rgba(16, 185, 129, 0.1);
    border-left-color: #10b981;
}

/* Sub-panels (e.g., Code block wrappers) */
pre {
    background: var(--code-bg);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 8px;
    padding: 1.25rem;
    overflow-x: auto;
    margin: 1.5rem 0;
    box-shadow: inset 0 2px 10px rgba(0,0,0,0.2);
}

code {
    font-family: 'Fira Code', Consolas, Monaco, 'Courier New', monospace;
    font-size: 0.9em;
}

p code, li code {
    background: rgba(255,255,255,0.1);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    color: #e2e8f0;
}

/* Mermaid Wrapper */
.mermaid-container {
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
    padding: 2rem;
    margin: 2rem 0;
    border: 1px solid var(--panel-border);
    display: flex;
    justify-content: center;
}

/* Responsive */
@media (max-width: 900px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        padding: 1rem;
        border-right: none;
        border-bottom: 1px solid var(--panel-border);
    }
    .app-container { flex-direction: column; }
    .content-area {
        margin-left: 0;
        padding: 1.5rem;
    }
    .glass-panel { padding: 1.5rem; }
}

/* Loading Animation */
.loader {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: spin 1s ease-in-out infinite;
    margin: 40px auto;
}

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

/* Sidebar Tree Navigation */
.nav-tree {
    flex: 1;
    overflow-y: auto;
    padding-right: 0.5rem;
    margin-right: -0.5rem; /* スクロールバーのスペース調整 */
}

.nav-tree::-webkit-scrollbar {
    width: 4px;
}

.nav-tree::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.nav-tree details {
    margin-bottom: 0.5rem;
}

.nav-category {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    list-style: none; /* Hide default arrow in some browsers */
    display: flex;
    align-items: center;
    transition: background 0.2s;
}

.nav-category::-webkit-details-marker {
    display: none;
}

.nav-category::before {
    content: '';
    font-size: 0.7em;
    margin-right: 8px;
    color: var(--text-muted);
    transition: transform 0.2s;
}

.nav-details[open] .nav-category::before {
    transform: rotate(90deg);
}

.nav-category:hover {
    background: rgba(255, 255, 255, 0.05);
}

.nav-sub {
    margin-left: 1.5rem;
    margin-top: 0.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    border-left: 1px solid rgba(255,255,255,0.1);
    padding-left: 0.5rem;
}

/* Method Tables */
.method-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    overflow: hidden;
    color: var(--text-dim);
}

.method-table th {
    background: rgba(255, 255, 255, 0.07);
    text-align: left;
    padding: 12px;
    color: var(--accent-color);
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
}

.method-table td {
    padding: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.method-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.method-table code {
    color: #e5c07b;
    background: rgba(255, 255, 255, 0.08);
    padding: 2px 4px;
    border-radius: 4px;
}

/* ============================================================
   Story Article スタイル
   ============================================================ */
.story-article { max-width: 820px; margin: 0 auto; line-height: 1.85; }
.story-header { text-align: center; padding: 2rem 0 1.5rem; border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: 2.5rem; }
.story-tag { display: inline-block; background: rgba(99,102,241,0.15); color: var(--accent-color); border: 1px solid var(--accent-color); border-radius: 20px; padding: 0.2rem 0.9rem; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.05em; margin-bottom: 1rem; }
.story-header h1 { font-size: 1.9rem; line-height: 1.4; margin: 0.5rem 0; }
.story-highlight { background: linear-gradient(90deg, var(--accent-color), #a78bfa); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.story-subtitle { color: var(--text-dim); font-style: italic; font-size: 0.95rem; }
.story-section h2 { font-size: 1.2rem; margin: 2rem 0 1rem; display: flex; align-items: center; gap: 0.7rem; }
.story-num { display: inline-block; background: var(--accent-color); color: #fff; font-size: 0.7rem; font-weight: 700; padding: 0.2rem 0.6rem; border-radius: 4px; letter-spacing: 0.05em; }
.story-divider { border: none; border-top: 1px solid rgba(255,255,255,0.08); margin: 2.5rem 0; }
.story-img { width: 100%; border-radius: 10px; border: 1px solid rgba(255,255,255,0.1); margin: 1.2rem 0; display: block; }
.story-img-half { width: 70%; border-radius: 10px; border: 1px solid rgba(255,255,255,0.1); margin: 1rem auto; display: block; }
.story-img-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; margin: 1rem 0; }
.story-img-grid img { width: 100%; border-radius: 8px; border: 1px solid rgba(255,255,255,0.1); }
.story-quote { border-left: 3px solid var(--accent-color); background: rgba(255,255,255,0.03); padding: 0.8rem 1.2rem; margin: 1rem 0; border-radius: 0 8px 8px 0; font-style: italic; color: var(--text-dim); }
.story-list { padding-left: 1.5rem; margin: 0.8rem 0; }
.story-list li, .story-steps li { margin: 0.5rem 0; }
.story-steps { padding-left: 1.5rem; margin: 0.8rem 0; }
.story-link-note { font-size: 0.9rem; color: var(--text-dim); }
.story-link-note a, .story-section a { color: var(--accent-color); text-decoration: none; }
.story-link-note a:hover, .story-section a:hover { text-decoration: underline; }
.story-idea-box { background: linear-gradient(135deg, rgba(99,102,241,0.15), rgba(167,139,250,0.1)); border: 1px solid rgba(99,102,241,0.4); border-radius: 10px; padding: 1rem 1.3rem; margin: 1.2rem 0; }
.story-achievement { background: linear-gradient(135deg, rgba(16,185,129,0.15), rgba(52,211,153,0.1)); border: 1px solid rgba(16,185,129,0.4); border-radius: 10px; padding: 1rem 1.3rem; margin: 1.5rem 0; text-align: center; font-size: 1.05rem; }
.story-platforms { display: flex; flex-direction: column; gap: 0.75rem; margin: 1.5rem 0; }
.story-platform-item { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.1); border-radius: 8px; padding: 0.8rem 1.2rem; display: flex; align-items: flex-start; gap: 0.8rem; }
.platform-icon { font-size: 1.3rem; flex-shrink: 0; }
.story-finale { text-align: center; font-size: 1.05rem; color: var(--text-dim); padding: 2rem 1rem; border-top: 1px solid rgba(255,255,255,0.08); margin-top: 1.5rem; line-height: 2; }