/* ===== Research App — Markdown Article Styles ===== */

.research-article {
    padding: 8px 0;
    max-width: 800px;
    line-height: 1.8;
    font-size: 15px;
}

/* Headings */
.research-article h1 {
    font-size: 1.6em;
    color: var(--text-bright);
    border-bottom: 2px solid var(--orange);
    padding-bottom: 8px;
    margin: 0 0 16px;
}

.research-article h2 {
    font-size: 1.3em;
    color: var(--orange);
    margin: 32px 0 12px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}

.research-article h3 {
    font-size: 1.1em;
    color: var(--cyan);
    margin: 24px 0 8px;
}

.research-article h4 {
    font-size: 1em;
    color: var(--text-bright);
    margin: 16px 0 6px;
}

/* Paragraphs */
.research-article p {
    margin: 0 0 12px;
    color: var(--text);
}

/* Blockquote (3行サマリー etc) */
.research-article blockquote {
    border-left: 3px solid var(--orange);
    background: rgba(255, 145, 0, 0.08);
    padding: 12px 16px;
    margin: 0 0 16px;
    border-radius: 0 var(--radius) var(--radius) 0;
}

.research-article blockquote p {
    margin: 0 0 4px;
    color: var(--text);
}

.research-article blockquote strong {
    color: var(--orange);
}

/* Links */
.research-article a {
    color: var(--accent);
    text-decoration: none;
}

.research-article a:hover {
    text-decoration: underline;
}

/* Bold / Italic */
.research-article strong {
    color: var(--text-bright);
}

.research-article em {
    color: var(--text);
    font-style: italic;
}

/* Lists */
.research-article ul,
.research-article ol {
    margin: 0 0 12px;
    padding-left: 24px;
}

.research-article li {
    margin: 4px 0;
}

.research-article li::marker {
    color: var(--accent-dim);
}

/* Tables — scrollable on mobile */
.research-article .table-wrap {
    overflow-x: auto;
    margin: 0 0 16px;
    -webkit-overflow-scrolling: touch;
}

.research-article table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    white-space: nowrap;
}

.research-article thead th {
    background: var(--bg-sidebar);
    color: var(--text-bright);
    text-align: left;
    padding: 8px 10px;
    border-bottom: 2px solid var(--accent-dim);
    position: sticky;
    top: 0;
}

.research-article tbody td {
    padding: 6px 10px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

.research-article tbody tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.02);
}

.research-article tbody tr:hover {
    background: var(--accent-glow);
}

/* Code */
.research-article code {
    background: rgba(0, 200, 255, 0.1);
    color: var(--cyan);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: 'Cascadia Code', 'Fira Code', monospace;
}

.research-article pre {
    background: var(--bg-sidebar);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 16px;
    margin: 0 0 16px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.research-article pre code {
    background: none;
    padding: 0;
    color: var(--text);
    font-size: 13px;
}

/* Horizontal Rule */
.research-article hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 24px 0;
}

/* Images */
.research-article img {
    max-width: 100%;
    border-radius: var(--radius);
}

/* ===== Research Home — Theme Cards ===== */
.research-home-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 12px;
}

.research-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    cursor: pointer;
    transition: border-color 0.2s, transform 0.15s;
    text-decoration: none;
    display: block;
}

.research-card:hover {
    border-color: var(--orange);
    transform: translateY(-2px);
}

.research-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.research-card-icon {
    font-size: 1.4em;
}

.research-card-num {
    font-size: 11px;
    color: var(--text-dim);
    background: rgba(255, 145, 0, 0.12);
    padding: 1px 6px;
    border-radius: 4px;
}

.research-card-title {
    font-size: 14px;
    color: var(--text-bright);
    font-weight: 600;
}

.research-card-group {
    font-size: 11px;
    color: var(--text-dim);
    margin-top: 4px;
}

/* Group Headers */
.research-group-title {
    color: var(--orange);
    font-size: 15px;
    font-weight: 600;
    margin: 20px 0 8px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border);
}

.research-group-title:first-child {
    margin-top: 0;
}