/* My Little Library — Monochrome Aesthetic v1.1 */
:root {
  --bg: #0b0b0b;
  --bg-elevated: #121212;
  --bg-card: #181818;
  --border: #2c2c2c;
  --border-hover: #444;
  --text: #ececec;
  --text-muted: #8a8a8a;
  --text-dim: #555;
  --accent: #f2f2f2;
  --danger: #c55;
  --radius: 10px;
  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

#app {
  display: grid;
  grid-template-columns: 220px 1fr;
  grid-template-rows: auto 1fr;
  min-height: 100vh;
  max-width: 1500px;
  margin: 0 auto;
}

.top-bar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.4rem;
  border-bottom: 1px solid var(--border);
  background: rgba(11,11,11,0.92);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.brand { display: flex; align-items: center; gap: 0.7rem; }
.logo { font-size: 1.5rem; color: var(--accent); opacity: 0.9; }
.brand h1 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 400;
  letter-spacing: 0.03em;
}
.tagline { font-size: 0.68rem; color: var(--text-muted); font-style: italic; }

.top-actions { display: flex; align-items: center; gap: 0.6rem; }
.count-badge {
  font-size: 0.75rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 0.2rem 0.55rem;
  border-radius: 20px;
}

.icon-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  width: 38px; height: 38px;
  border-radius: 50%;
  font-size: 1rem;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
}

.side-nav {
  border-right: 1px solid var(--border);
  padding: 1.4rem 0.9rem;
  background: var(--bg-elevated);
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

.nav-section h3 {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  margin-bottom: 0.6rem;
  padding-left: 0.55rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  width: 100%;
  padding: 0.55rem 0.7rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.88rem;
  text-align: left;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.15s;
}
.nav-item:hover, .nav-item.active {
  background: var(--bg-card);
  color: var(--text);
}
.nav-item span { width: 1.15rem; text-align: center; opacity: 0.85; }

.nav-footer {
  margin-top: auto;
  font-size: 0.68rem;
  color: var(--text-dim);
  padding: 0.4rem 0.55rem;
}

#main { padding: 1.3rem 1.4rem 2.5rem; overflow-y: auto; }

.view { display: none; }
.view.active { display: block; animation: fadeIn 0.22s ease; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: none; }
}

.view-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1.3rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--border);
}
.view-header h2 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.45rem;
  flex: 1 1 100%;
  letter-spacing: 0.01em;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  flex: 1;
}
.filters select,
.filters input,
.settings-block input {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.42rem 0.65rem;
  border-radius: 7px;
  font-size: 0.82rem;
}
.filters input[type="search"] { min-width: 150px; flex: 1; }

.actions { display: flex; gap: 0.45rem; flex-wrap: wrap; }

.btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.48rem 0.95rem;
  border-radius: 7px;
  font-size: 0.82rem;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.btn:hover { border-color: var(--border-hover); background: #222; }
.btn.primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.btn.primary:hover { background: #ccc; }
.btn.danger { color: var(--danger); border-color: #522; }
.btn.danger:hover { background: #2a1010; }
.btn.sm { padding: 0.3rem 0.6rem; font-size: 0.75rem; }

.library-layout {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 1.5rem;
  align-items: start;
}
.library-side {
  position: sticky;
  top: 4.5rem;
}
.side-block {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem;
  margin-bottom: 0.4rem;
}
.side-block h3 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}
.side-list { display: flex; flex-direction: column; gap: 0.45rem; }
.side-item {
  font-size: 0.8rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem 0;
  transition: color 0.15s;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.side-item:hover { color: var(--text); }
.side-empty { font-size: 0.75rem; color: var(--text-dim); font-style: italic; }

.ornament {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.7rem;
  letter-spacing: 0.35em;
  margin: 0.7rem 0;
  opacity: 0.7;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
  gap: 1.1rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.15s;
  display: flex;
  flex-direction: column;
}
.card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.card-cover {
  aspect-ratio: 2/3;
  background: #111;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.card-cover .placeholder {
  font-size: 2.2rem;
  color: #2a2a2a;
  font-family: var(--font-serif);
}
.card-cover .type-tag {
  position: absolute;
  top: 6px;
  left: 6px;
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: rgba(0,0,0,0.7);
  color: #bbb;
  padding: 0.15rem 0.35rem;
  border-radius: 3px;
}

.card-body {
  padding: 0.65rem 0.7rem 0.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.card-title {
  font-size: 0.82rem;
  font-weight: 500;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-meta { font-size: 0.68rem; color: var(--text-muted); }
.status-badge {
  display: inline-block;
  font-size: 0.6rem;
  padding: 0.12rem 0.35rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  width: fit-content;
}
.stars { color: #ccc; font-size: 0.72rem; letter-spacing: 1px; }
.progress-bar {
  height: 3px;
  background: #222;
  border-radius: 2px;
  margin-top: 0.35rem;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--text);
  border-radius: 2px;
  transition: width 0.3s;
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 3rem 1rem;
  font-style: italic;
  font-family: var(--font-serif);
}
.hidden { display: none !important; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.9rem;
  margin-bottom: 1.8rem;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem;
  text-align: center;
}
.stat-card h3 {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}
.stat-card p {
  font-size: 1.8rem;
  font-family: var(--font-serif);
}
.stat-card small { font-size: 0.7rem; color: var(--text-dim); }

.goals-section { margin-top: 0.5rem; }
.goal-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  margin-bottom: 0.6rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
}
.goal-progress {
  height: 4px;
  background: #222;
  border-radius: 2px;
  margin-top: 0.4rem;
  overflow: hidden;
}

#activity-log { list-style: none; }
#activity-log li {
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
  color: var(--text-muted);
}
#activity-log li time {
  display: block;
  font-size: 0.68rem;
  color: var(--text-dim);
  margin-bottom: 0.15rem;
}

.settings-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem;
  margin-bottom: 1.1rem;
}
.settings-block h3 { font-size: 0.88rem; margin-bottom: 0.7rem; }
.settings-block label {
  display: block;
  font-size: 0.82rem;
  margin-bottom: 0.4rem;
}
.settings-block input { width: 100%; margin-top: 0.25rem; }
.hint { font-size: 0.72rem; color: var(--text-muted); margin-top: 0.5rem; }

.collection-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  transition: border-color 0.15s;
}
.collection-card:hover { border-color: var(--border-hover); }
.collection-icon {
  width: 46px; height: 46px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  border: 2px solid;
  flex-shrink: 0;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.78);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
}
.modal {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  padding: 1.4rem 1.5rem;
}
.modal-close {
  position: absolute;
  top: 0.7rem; right: 0.7rem;
  background: none; border: none;
  color: var(--text-muted);
  font-size: 1.15rem;
  cursor: pointer;
}
.modal h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  margin-bottom: 1rem;
  padding-right: 1.5rem;
}

.form-group { margin-bottom: 0.9rem; }
.form-group label {
  display: block;
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-bottom: 0.28rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 0.65rem;
  border-radius: 7px;
  font-size: 0.88rem;
}
.form-group textarea { min-height: 75px; resize: vertical; }
.form-row { display: flex; gap: 0.7rem; }
.form-row .form-group { flex: 1; }

.star-input {
  display: flex;
  gap: 0.25rem;
  font-size: 1.35rem;
  cursor: pointer;
}
.star-input span { color: #333; transition: color 0.1s; }
.star-input span.on { color: #ddd; }

.cover-preview {
  width: 64px; height: 96px;
  object-fit: cover;
  border-radius: 4px;
  background: #111;
  margin-top: 0.4rem;
}

.search-results {
  max-height: 320px;
  overflow-y: auto;
  margin-top: 0.9rem;
}
.search-result-item {
  display: flex;
  gap: 0.7rem;
  padding: 0.55rem;
  border: 1px solid transparent;
  border-radius: 7px;
  cursor: pointer;
}
.search-result-item:hover {
  background: var(--bg-card);
  border-color: var(--border);
}
.search-result-item img {
  width: 44px; height: 66px;
  object-fit: cover;
  border-radius: 3px;
  background: #111;
  flex-shrink: 0;
}

.epub-reader {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 90;
  display: flex;
  flex-direction: column;
}
.reader-toolbar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
  flex-wrap: wrap;
}
#epub-title {
  flex: 1;
  font-size: 0.88rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.reader-controls {
  display: flex;
  gap: 0.35rem;
  align-items: center;
}
.reader-controls button,
.reader-controls select {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.28rem 0.45rem;
  border-radius: 4px;
  font-size: 0.78rem;
  cursor: pointer;
}
#epub-area { flex: 1; overflow: hidden; }

@media (max-width: 900px) {
  .library-layout { grid-template-columns: 1fr; }
  .library-side { position: static; display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.6rem; }
  .side-block { margin: 0; }
  .ornament { display: none; }
}
@media (max-width: 700px) {
  #app { grid-template-columns: 1fr; }
  .side-nav {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: 250px;
    z-index: 60;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    box-shadow: 6px 0 24px rgba(0,0,0,0.55);
  }
  .side-nav.open { transform: translateX(0); }
  .icon-btn { display: flex; }
  .card-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 0.8rem; }
  .library-side { grid-template-columns: 1fr; }
  .view-header h2 { font-size: 1.25rem; }
  .top-bar { padding: 0.7rem 1rem; }
}