:root {
  --bg: #f9f9f9; --text: #262626; --text2: #6e6e73;
  --accent: #8abe1b; --accent-dark: #6a9615; --accent-light: #eef7dc;
  --border: #e1e1e1; --code-bg: #f5f5f5;
  --font: 'Inter','Noto Sans JP',-apple-system,sans-serif;
  --mono: 'JetBrains Mono',monospace;
}
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.75; font-size: 15px; }

/* Header */
.site-header { border-bottom: 1px solid var(--border); padding: 0 24px; position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.95); backdrop-filter: blur(16px); }
.header-inner { max-width: 1100px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 56px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-size: 15px; font-weight: 600; }
.logo-img { height: 28px; width: auto; }
.logo span { color: var(--text2); }
.nav { display: flex; gap: 16px; align-items: center; font-size: 14px; }
.nav a { color: var(--text2); text-decoration: none; }
.nav a:hover { color: var(--accent); }
.user-badge { font-size: 13px; padding: 3px 10px; background: var(--accent-light); color: var(--accent-dark); border-radius: 12px; font-weight: 600; }

/* Container */
.container { max-width: 1100px; margin: 0 auto; padding: 32px 24px 80px; }
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.page-header h1 { font-size: 22px; }
.header-actions { display: flex; gap: 12px; align-items: center; }
.paper-count { font-size: 13px; color: var(--text2); }

/* Buttons */
.btn { padding: 8px 16px; border-radius: 8px; border: 1px solid var(--border); background: #fff; color: var(--text); font-size: 14px; cursor: pointer; text-decoration: none; display: inline-block; font-family: var(--font); }
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-dark); }
.btn-sm { padding: 4px 12px; font-size: 12px; border-radius: 6px; }

/* Sort bar */
.sort-bar { display: flex; gap: 6px; margin-bottom: 20px; }
.sort-btn { padding: 5px 14px; border-radius: 14px; font-size: 13px; background: var(--code-bg); color: var(--text2); text-decoration: none; }
.sort-btn.active { background: var(--accent); color: #fff; }

/* Paper list */
.paper-list { display: flex; flex-direction: column; gap: 0; }
.paper-item { display: grid; grid-template-columns: 60px 1fr; gap: 14px; padding: 18px 0; border-bottom: 1px solid var(--border); }
.paper-upvotes { text-align: center; }
.upvote-num { font-size: 20px; font-weight: 700; color: var(--accent); }
.upvote-label { font-size: 10px; color: var(--text2); display: block; }
.paper-title a { font-size: 15px; font-weight: 700; color: var(--text); text-decoration: none; }
.paper-title a:hover { color: var(--accent); }
.paper-title-ja { font-size: 14px; color: var(--accent); margin-top: 2px; }
.paper-plain { font-size: 13.5px; color: #444; margin-top: 6px; padding: 6px 10px; background: #f0f8ff; border-radius: 6px; }
.paper-summary-ja { font-size: 13px; color: var(--text2); margin-top: 6px; line-height: 1.7; }
.paper-meta { font-size: 12px; color: var(--text2); margin-top: 6px; display: flex; gap: 10px; flex-wrap: wrap; }
.org-badge { color: var(--accent); font-weight: 600; }
.paper-actions { margin-top: 8px; }

/* Article grid */
.article-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.article-card { background: #fff; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: box-shadow 0.2s; }
.article-card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.08); }
.card-thumb { width: 100%; height: 160px; object-fit: cover; border-bottom: 1px solid var(--border); }
.card-body { padding: 16px 18px; }
.card-body h3 { font-size: 15px; line-height: 1.5; margin-bottom: 6px; }
.card-body p { font-size: 13px; color: var(--text2); margin-bottom: 10px; }
.card-meta { display: flex; gap: 6px; margin-bottom: 8px; flex-wrap: wrap; }
.card-footer { display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: var(--text2); }
.status-badge { font-size: 11px; padding: 2px 8px; border-radius: 10px; font-weight: 600; }
.status-generating { background: #fff3cd; color: #856404; }
.status-draft { background: #e2e3e5; color: #383d41; }
.status-scheduled { background: #cce5ff; color: #004085; }
.status-published { background: #d4edda; color: #155724; }

/* Article view */
.article-view { max-width: 780px; }
.article-meta-bar { font-size: 13px; color: var(--text2); margin-bottom: 16px; display: flex; gap: 10px; flex-wrap: wrap; }
.article-meta-bar a { color: var(--accent); }
.article-content h1 { font-size: 28px; font-weight: 800; margin-bottom: 32px; }
.article-content h2 { font-size: 20px; font-weight: 700; margin-top: 48px; margin-bottom: 14px; padding-bottom: 8px; border-bottom: 2px solid var(--border); }
.article-content h3 { font-size: 17px; font-weight: 600; margin-top: 32px; margin-bottom: 10px; }
.article-content p { margin-bottom: 16px; }
.article-content img { max-width: 100%; border-radius: 8px; margin: 20px 0; border: 1px solid var(--border); }
.article-content table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; }
.article-content th { padding: 8px 12px; text-align: left; font-weight: 600; border-bottom: 2px solid var(--text); }
.article-content td { padding: 8px 12px; border-bottom: 1px solid var(--border); }
.article-content blockquote { background: var(--accent-light); border-left: 3px solid var(--accent); padding: 14px 18px; border-radius: 0 8px 8px 0; margin: 16px 0; }
.article-content code { font-family: var(--mono); font-size: 13px; background: var(--code-bg); padding: 2px 6px; border-radius: 4px; color: #e11d48; }
.article-content pre { background: #1c1c1e; color: #f5f5f7; padding: 18px; border-radius: 8px; overflow-x: auto; margin: 16px 0; }
.article-content pre code { background: none; color: inherit; padding: 0; }

/* Auth */
.auth-container { max-width: 360px; margin: 60px auto; }
.auth-container h1 { font-size: 22px; margin-bottom: 20px; }
.auth-container form { display: flex; flex-direction: column; gap: 12px; }
.auth-container label { font-size: 13px; font-weight: 600; color: var(--text2); }
.auth-container input { padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px; font-size: 15px; font-family: var(--font); }
.auth-container button { padding: 12px; background: var(--accent); color: #fff; border: none; border-radius: 8px; font-size: 15px; cursor: pointer; font-family: var(--font); }
.auth-link { margin-top: 16px; font-size: 14px; color: var(--text2); }
.auth-link a { color: var(--accent); }

/* Flash messages */
.flash-container { max-width: 1100px; margin: 0 auto; padding: 12px 24px; }
.flash { padding: 10px 16px; border-radius: 8px; font-size: 14px; margin-bottom: 8px; }
.flash-success { background: #d4edda; color: #155724; }
.flash-error { background: #f8d7da; color: #721c24; }

/* Version list */
.version-list { margin-top: 20px; }
.version-item { border-bottom: 1px solid var(--border); padding: 14px 0; }
.version-header { display: flex; gap: 12px; align-items: center; font-size: 14px; }
.version-label { font-size: 11px; padding: 2px 8px; border-radius: 10px; background: var(--code-bg); }
.version-date { font-size: 12px; color: var(--text2); }
.version-content { font-family: var(--mono); font-size: 12px; white-space: pre-wrap; background: var(--code-bg); padding: 12px; border-radius: 6px; margin-top: 8px; max-height: 300px; overflow-y: auto; }

/* Misc */
.empty-state { color: var(--text2); font-size: 15px; margin-top: 40px; }
.site-footer { border-top: 1px solid var(--border); padding: 20px; text-align: center; font-size: 13px; color: var(--text2); }

/* Responsive */
@media (max-width: 600px) {
  .header-inner { flex-wrap: wrap; height: auto; padding: 10px 0; }
  .container { padding: 20px 14px 60px; }
  .article-grid { grid-template-columns: 1fr; }
  .paper-item { grid-template-columns: 48px 1fr; }
}

/* Article card link */
.article-card-link { text-decoration: none; color: inherit; display: block; }
.article-card-link:hover .article-card { box-shadow: 0 4px 20px rgba(0,0,0,0.08); transform: translateY(-2px); }
.article-card { transition: box-shadow 0.2s, transform 0.2s; }

.publish-date { font-size: 12px; color: var(--text2); }