:root {
  --bg: #FDFAF5;
  --text: #2C2C2C;
  --muted: #9A9A8A;
  --accent: #F5D98B;
  --progress: #D4A843;
  --link: #8B6914;
  --font-reading: 'Noto Serif', serif;
  --font-ui: 'Noto Sans', sans-serif;
  --max-width: 720px;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1rem;
  min-height: 100vh;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.header-left {
  font-size: 0.9rem;
  color: var(--muted);
}

.header-right {
  font-size: 0.9rem;
}

.phrase-count-badge {
  color: var(--link);
  font-size: 0.85rem;
}

/* Progress bar */
.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--accent);
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--progress);
  border-radius: 3px;
  transition: width 0.3s ease;
}

.progress-info {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.3rem;
}

/* Upload screen */
.upload-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 70vh;
  text-align: center;
}

.upload-screen h1 {
  font-family: var(--font-reading);
  font-size: 2rem;
  font-weight: 400;
  margin-bottom: 1.5rem;
  color: var(--text);
}

.upload-screen p {
  color: var(--muted);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.drop-zone {
  width: 100%;
  max-width: 400px;
  padding: 3rem 2rem;
  border: 2px dashed var(--accent);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 0.2s;
  position: relative;
}

.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--progress);
}

.drop-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.drop-zone-text {
  color: var(--muted);
  font-size: 0.95rem;
}

.upload-hint {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 1.5rem;
}

/* Loading indicator */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 40vh;
  text-align: center;
}

.loading p {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.loading .progress-bar {
  max-width: 300px;
}

/* Library view */
.book-list {
  list-style: none;
}

.book-item {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--accent);
}

.book-item:last-child {
  border-bottom: none;
}

.book-item-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.5rem;
}

.book-title {
  font-family: var(--font-reading);
  font-size: 1.15rem;
  font-weight: 400;
}

.book-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.btn {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  padding: 0.35rem 0.9rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  background: var(--progress);
  color: white;
  transition: opacity 0.2s;
}

.btn:hover {
  opacity: 0.85;
}

.btn-ghost {
  background: none;
  color: var(--muted);
  padding: 0.35rem 0.5rem;
  font-size: 0.8rem;
}

.btn-ghost:hover {
  color: var(--text);
}

.book-progress {
  margin-bottom: 0.35rem;
}

.book-status {
  font-size: 0.8rem;
  color: var(--muted);
}

.book-status-finished {
  color: var(--progress);
  font-weight: 500;
}

.add-book-btn {
  display: inline-block;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--link);
  cursor: pointer;
  background: none;
  border: none;
  font-family: var(--font-ui);
  padding: 0;
}

.add-book-btn:hover {
  text-decoration: underline;
}

/* Reading view */
.reading-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.reading-page-range {
  font-size: 0.9rem;
  color: var(--muted);
}

.reading-book-title {
  font-family: var(--font-reading);
  font-size: 1.1rem;
  font-weight: 400;
  margin-bottom: 1rem;
  color: var(--muted);
}

.reading-progress-bar {
  margin-bottom: 0.3rem;
}

.reading-progress-info {
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 2rem;
}

.back-link {
  font-size: 0.85rem;
  color: var(--link);
  cursor: pointer;
  background: none;
  border: none;
  font-family: var(--font-ui);
  padding: 0;
}

.back-link:hover {
  text-decoration: underline;
}

/* Pages container */
.pages-container {
  font-family: var(--font-reading);
  font-size: 1.1rem;
  line-height: 1.9;
  margin-bottom: 2rem;
}

.page-break {
  margin: 2.5rem 0;
  border: none;
  border-top: 1px solid var(--accent);
  opacity: 0.5;
}

.page-label {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  color: var(--muted);
  margin-bottom: 1rem;
  display: block;
}

.paragraph {
  margin-bottom: 1.2rem;
}

/* Text selection styling */
.pages-container ::selection {
  background: var(--accent);
}

/* Save phrase popup */
.save-phrase-btn {
  position: absolute;
  background: var(--progress);
  color: white;
  border: none;
  border-radius: 4px;
  padding: 0.35rem 0.75rem;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  cursor: pointer;
  z-index: 10;
  white-space: nowrap;
  transition: opacity 0.15s;
}

.save-phrase-btn:hover {
  opacity: 0.85;
}

/* Saved phrase highlight */
.saved-phrase {
  background: var(--accent);
  border-radius: 2px;
}

/* Navigation */
.day-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
  font-size: 0.85rem;
}

.day-nav button {
  background: none;
  border: none;
  color: var(--link);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 0.3rem 0;
}

.day-nav button:hover {
  text-decoration: underline;
}

.day-nav button:disabled {
  color: var(--muted);
  cursor: default;
  text-decoration: none;
}

/* Completion screen */
.completion {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 50vh;
  text-align: center;
}

.completion h2 {
  font-family: var(--font-reading);
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: 1rem;
}

.completion p {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--progress);
  color: white;
  padding: 0.5rem 1.2rem;
  border-radius: 4px;
  font-size: 0.85rem;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  z-index: 100;
}

.toast.visible {
  opacity: 1;
}

/* Upload modal overlay */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(44, 44, 44, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
}

.modal {
  background: var(--bg);
  padding: 2rem;
  border-radius: 8px;
  width: 90%;
  max-width: 420px;
}

.modal h2 {
  font-family: var(--font-reading);
  font-size: 1.2rem;
  font-weight: 400;
  margin-bottom: 1.5rem;
}

.modal-field {
  margin-bottom: 1rem;
}

.modal-field label {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.3rem;
}

.modal-field input {
  width: 100%;
  padding: 0.5rem;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  border: 1px solid var(--accent);
  border-radius: 4px;
  background: white;
  color: var(--text);
  outline: none;
}

.modal-field input:focus {
  border-color: var(--progress);
}

.modal-field input[type="number"] {
  width: 80px;
}

.modal-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  margin-top: 1.5rem;
}

.modal-cancel {
  background: none;
  border: none;
  color: var(--muted);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 0.35rem 0.5rem;
}

/* Words page */
.words-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.words-header h1 {
  font-family: var(--font-reading);
  font-size: 1.5rem;
  font-weight: 400;
}

.words-count {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.words-filter {
  margin-bottom: 1.5rem;
}

.words-filter select {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--accent);
  border-radius: 4px;
  background: white;
  color: var(--text);
  outline: none;
}

.phrase-entry {
  padding: 1rem 0;
  border-bottom: 1px solid var(--accent);
}

.phrase-entry:last-child {
  border-bottom: none;
}

.phrase-entry-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.phrase-entry-text {
  font-family: var(--font-reading);
  font-size: 1rem;
  color: var(--progress);
  line-height: 1.5;
}

.phrase-entry-delete {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 0.8rem;
  cursor: pointer;
  padding: 0;
  font-family: var(--font-ui);
  flex-shrink: 0;
}

.phrase-entry-delete:hover {
  color: var(--text);
}

.phrase-entry-meta {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.3rem;
}

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
}