:root {
  --bg: #ffffff;
  --bg-alt: #f5f7f5;
  --text: #1a1f1a;
  --text-muted: #6b756b;
  --border: #e2e6e2;
  --accent: #2e7d4f;
  --accent-dark: #1f5c38;
  --card-bg: #ffffff;
  --danger: #b3413a;
}

[data-theme="dark"] {
  --bg: #181818;
  --bg-alt: #1a201b;
  --text: #e6e6e6;
  --text-muted: #9e9e9e;
  --border: #303030;
  --accent: #4caf7d;
  --accent-dark: #6fd39c;
  --card-bg: #222222;
  --danger: #e07a72;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

.container { max-width: 900px; margin: 0 auto; padding: 0 20px; }

nav.topnav {
  border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}
nav.topnav .container {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px; padding-bottom: 14px;
}
.brand { font-weight: 700; font-size: 1.2rem; color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 18px; font-size: 0.95rem; }
.nav-links a { color: var(--text-muted); }
.nav-links a:hover { color: var(--accent); }

button, .btn {
  display: inline-block;
  background: var(--accent);
  color: white;
  border: none;
  padding: 9px 16px;
  border-radius: 6px;
  font-size: 0.95rem;
  cursor: pointer;
}
button:hover, .btn:hover { background: var(--accent-dark); color: white; }
button.secondary, .btn.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
button.danger, .btn.danger { background: var(--danger); }
button.small { padding: 5px 10px; font-size: 0.8rem; }

input, textarea, select {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
}
label { display: block; margin: 14px 0 6px; font-size: 0.9rem; color: var(--text-muted); }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  margin-bottom: 14px;
}

.story-card { display: flex; flex-direction: column; gap: 4px; }
.story-card h3 { margin: 0; font-size: 1.1rem; }
.story-meta { color: var(--text-muted); font-size: 0.85rem; }
.tag {
  display: inline-block; background: var(--bg-alt); border: 1px solid var(--border);
  border-radius: 12px; padding: 2px 10px; font-size: 0.78rem; color: var(--text-muted); marger-right: 4px;
}

.section-title { margin-top: 34px; margin-bottom: 10px; font-size: 1.15rem; }

.progress-bar { background: var(--border); border-radius: 6px; height: 8px; overflow: hidden; margin: 6px 0; }
.progress-bar-fill { background: var(--accent); height: 100%; }

.reader-text { font-size: var(--reader-font-size, 1.1rem); line-height: var(--reader-line-height, 1.6); max-width: 680px; margin: 0 auto; }
.reader-text p { margin-bottom: 1.2em; }
.chapter-nav { display: flex; justify-content: space-between; margin: 34px 0; }

.comment { border-bottom: 1px solid var(--border); padding: 10px 0; }
.comment .who { font-weight: 600; font-size: 0.9rem; }
.comment .when { color: var(--text-muted); font-size: 0.78rem; }

.error-msg { color: var(--danger); font-size: 0.9rem; margin-top: 8px; }
.success-msg { color: var(--accent); font-size: 0.9rem; margin-top: 8px; }
.muted { color: var(--text-muted); }
.theme-toggle { background: none; border: 1px solid var(--border); color: var(--text); padding: 5px 10px; }

/* ---- Round 5 additions ---- */

/* Profile dropdown */
.profile-menu { position: relative; }
.profile-trigger {
  display: flex; align-items: center; gap: 8px; cursor: pointer;
  padding: 4px 8px; border-radius: 8px;
}
.profile-trigger:hover { background: var(--border); }
.profile-avatar {
  width: 30px; height: 30px; border-radius: 50%; object-fit: cover;
  background: var(--accent); color: #fff; display: flex; align-items: center;
  justify-content: center; font-weight: 700; font-size: 0.9rem;
}
.profile-dropdown {
  display: none; position: absolute; right: 0; top: 100%; z-index: 50;
  background: var(--card-bg); border: 1px solid var(--border); border-radius: 10px;
  min-width: 170px; padding: 6px; box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}
.profile-menu:hover .profile-dropdown { display: block; }
.profile-dropdown a {
  display: block; padding: 8px 12px; border-radius: 6px; font-size: 0.92rem; color: var(--text);
}
.profile-dropdown a:hover { background: var(--bg-alt); color: var(--accent); }

/* Cover-based story grid */
.story-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 16px;
}
.cover-card {
  position: relative; border: 1px solid var(--border); border-radius: 12px;
  overflow: hidden; background: var(--card-bg); cursor: pointer; display: block;
}
.cover-card img, .cover-card .cover-placeholder {
  width: 100%; aspect-ratio: 2/3; object-fit: cover; display: block;
}
.cover-placeholder {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff; display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 10px; font-weight: 600; font-size: 0.95rem;
}
.cover-card .cover-info { padding: 8px 10px; font-size: 0.8rem; color: var(--text-muted); }
.cover-card .cover-hover {
  position: absolute; inset: 0; background: rgba(0,0,0,0.82); color: #fff;
  opacity: 0; transition: opacity 0.15s; padding: 12px; overflow: hidden;
  display: flex; flex-direction: column; gap: 6px; font-size: 0.82rem;
}
.cover-card:hover .cover-hover { opacity: 1; }
.cover-hover h4 { margin: 0; font-size: 0.95rem; }

/* Paragraph comments */
.para-wrap { position: relative; }
.para-comment-btn {
  background: none; border: none; color: var(--text-muted); font-size: 0.75rem;
  cursor: pointer; padding: 0 6px; vertical-align: super;
}
.para-comment-btn:hover { color: var(--accent); background: none; }
.para-comment-panel {
  border: 1px solid var(--border); border-radius: 10px; background: var(--bg-alt);
  padding: 10px 14px; margin: 8px 0 16px; font-size: 0.9rem;
}

/* Chapter progress bar */
#chapter-progress {
  position: fixed; top: 0; left: 0; height: 3px; background: var(--accent);
  width: 0%; z-index: 100; transition: width 0.1s;
}

/* Tags multiselect */
.tags-dropdown { position: relative; }
.tags-panel {
  display: none; position: absolute; top: 100%; left: 0; z-index: 40;
  background: var(--card-bg); border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 14px; max-height: 240px; overflow-y: auto; min-width: 200px;
}
.tags-panel.open { display: block; }
.tags-panel label { display: flex; align-items: center; gap: 8px; margin: 4px 0; color: var(--text); }
.tags-panel input[type="checkbox"] { width: auto; }

/* ---- Round 6: side hover panel, titles on cards, scroll buttons ---- */
.cover-wrap { position: relative; }
.cover-card .cover-title {
  color: var(--text); font-weight: 600; font-size: 0.88rem;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: 2px;
}
.cover-side {
  display: none; position: absolute; left: calc(100% + 8px); top: 0; z-index: 60;
  width: 230px; max-height: 100%; overflow: hidden;
  background: rgba(25, 25, 25, 0.68); color: #fff;
  border-radius: 10px; padding: 12px; font-size: 0.8rem;
  backdrop-filter: blur(2px); pointer-events: none;
}
.cover-wrap:hover .cover-side { display: block; }
.cover-wrap.flip .cover-side { left: auto; right: calc(100% + 8px); }
.cover-side-title { font-weight: 700; font-size: 0.85rem; margin-bottom: 6px; }
.cover-side .tag {
  background: rgba(255,255,255,0.15); border-color: rgba(255,255,255,0.25);
  color: #eee; font-size: 0.68rem; padding: 1px 8px;
}
.cover-side-desc { margin-top: 8px; line-height: 1.45; }

/* Compact continue reading */
.continue-compact {
  display: flex; align-items: center; gap: 12px;
  border: 1px solid var(--border); border-radius: 10px; background: var(--card-bg);
  padding: 10px 14px; margin-bottom: 8px;
}
.continue-compact .cc-info { flex: 1; min-width: 0; }
.continue-compact .cc-title {
  font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 0.95rem;
}

/* Scroll to top/bottom buttons */
#scroll-btns {
  position: fixed; right: 16px; bottom: 16px; z-index: 90;
  display: flex; flex-direction: column; gap: 8px;
}
#scroll-btns button {
  width: 40px; height: 40px; border-radius: 50%; padding: 0;
  background: var(--card-bg); color: var(--text); border: 1px solid var(--border);
  font-size: 1.1rem; box-shadow: 0 2px 10px rgba(0,0,0,0.15);
}
#scroll-btns button:hover { background: var(--accent); color: #fff; }