:root {
  --bg: #F7F3EA;
  --card-bg: #FFFFFF;
  --text: #2B2B2B;
  --text-soft: #5A5A52;
  --teal: #3B5C63;
  --teal-dark: #2C464C;
  --save: #3E7D5C;
  --save-dark: #2F6247;
  --archive: #93733F;
  --archive-dark: #765B31;
  --delete: #AD5445;
  --delete-dark: #8B4436;
  --restore: #3D6E8C;
  --restore-dark: #2F5670;
  --border: #E4DCC8;
  --radius: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", "Arial Hebrew", "SF Hebrew Rounded", Arial, sans-serif;
  font-size: 18px;
  -webkit-tap-highlight-color: transparent;
}

body {
  min-height: 100vh;
  padding-bottom: env(safe-area-inset-bottom);
}

h1, h2, h3 { margin: 0; }

.topbar {
  background: var(--teal);
  color: #fff;
  padding: 0.7rem 1rem;
  text-align: center;
  position: sticky;
  top: 0;
  z-index: 5;
}
.topbar h1 { font-size: 1.25rem; font-weight: 700; }

.home-btn {
  position: absolute;
  inset-inline-start: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.16);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
}
.home-btn.hidden { display: none; }

.btn.btn-nav {
  background: var(--card-bg);
  color: var(--teal-dark);
  border: 2px solid var(--teal);
  margin-bottom: 0.7rem;
  padding: 0.65rem 1rem;
  font-size: 1rem;
}
.btn.btn-nav:active { background: var(--bg); }

.chapters-menu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.55rem;
}
.chapter-menu-btn {
  width: 100%;
  border: 2px solid var(--teal);
  background: var(--card-bg);
  color: var(--teal-dark);
  border-radius: 12px;
  padding: 1rem 0.6rem;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
  line-height: 1.3;
}
.chapter-menu-btn:active { background: var(--bg); }
.chapter-menu-btn.archive-choice {
  border-color: var(--archive);
  color: var(--archive-dark);
}
.chapter-menu-btn.deleted-choice {
  border-color: var(--delete);
  color: var(--delete-dark);
}

main {
  padding: 0.7rem 0.8rem 5.2rem;
  max-width: 640px;
  margin: 0 auto;
}

.footer-actions {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  gap: 0.5rem;
  padding: 0.5rem 0.8rem calc(0.5rem + env(safe-area-inset-bottom));
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  z-index: 8;
  max-width: 640px;
  margin: 0 auto;
}
.footer-btn {
  flex: 1;
  border: 2px solid var(--border);
  background: var(--bg);
  color: var(--text-soft);
  border-radius: 12px;
  padding: 0.55rem 0.5rem;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
}
.footer-btn:active { background: var(--border); }

.update-subtitle {
  text-align: center;
  font-size: 1rem;
  color: var(--text-soft);
  margin: 0 0 0.7rem;
}
.update-changelog {
  text-align: right;
  margin: 0 0 1.2rem;
  padding-inline-start: 1.3rem;
  font-size: 1rem;
  line-height: 1.7;
}
.change-request-textarea {
  width: 100%;
  font: inherit;
  font-size: 1.1rem;
  padding: 0.8rem;
  border: 2px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  color: var(--text);
  resize: vertical;
  margin-bottom: 1rem;
  box-sizing: border-box;
}

.progress-wrap {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.55rem 0.9rem;
  margin-bottom: 0.6rem;
  text-align: center;
}
.progress-text {
  font-size: 1.05rem;
  color: var(--text-soft);
  margin-bottom: 0.4rem;
}
.progress-text strong { color: var(--save-dark); }
.progress-bar-track {
  background: var(--border);
  border-radius: 999px;
  height: 8px;
  overflow: hidden;
}
.progress-bar-fill {
  background: var(--save);
  height: 100%;
  border-radius: 999px;
  transition: width 0.4s ease;
}

.empty-state {
  text-align: center;
  padding: 2.4rem 1.2rem;
  color: var(--text-soft);
  font-size: 1.1rem;
  line-height: 1.6;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  margin-bottom: 0.8rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.card-row {
  line-height: 1.4;
  margin-bottom: 0.25rem;
}
.card-label-inline {
  color: var(--text-soft);
  font-weight: 600;
  font-size: 0.92rem;
}
.card-phrase-inline {
  font-size: 1.2rem;
  font-weight: 700;
}
.card-connector {
  text-align: center;
  color: var(--teal);
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0.3rem 0;
}
.card-value {
  text-align: center;
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--teal-dark);
  margin: 0.4rem 0 0.7rem;
}
.card-meta {
  border-top: 1px solid var(--border);
  padding-top: 0.6rem;
  margin-top: 0.3rem;
}
.card-meta-row {
  margin-bottom: 0.35rem;
  font-size: 1rem;
  line-height: 1.45;
}
.card-chapter-pill {
  display: inline-block;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.15rem 0.7rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--teal-dark);
  margin-bottom: 0.4rem;
}

.actions {
  display: flex;
  flex-direction: row;
  gap: 0.4rem;
  margin-top: 0.6rem;
}
.btn {
  display: block;
  width: 100%;
  border: none;
  border-radius: 12px;
  padding: 0.85rem 0.3rem;
  font-size: 1.02rem;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  text-align: center;
  line-height: 1.25;
}
.actions .btn { flex: 1; }
.btn:active { transform: scale(0.98); }
.btn-save { background: var(--save); }
.btn-save:active { background: var(--save-dark); }
.btn-archive { background: var(--archive); }
.btn-archive:active { background: var(--archive-dark); }
.btn-delete { background: var(--delete); }
.btn-delete:active { background: var(--delete-dark); }
.btn-restore { background: var(--restore); }
.btn-restore:active { background: var(--restore-dark); }
.btn-cancel {
  background: transparent;
  color: var(--text-soft);
  border: 2px solid var(--border);
  margin-top: 0.5rem;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(20,20,15,0.55);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 20;
  padding: 1rem;
}
.overlay.hidden { display: none; }
.overlay-card {
  background: var(--card-bg);
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 1.1rem;
  width: 100%;
  max-width: 640px;
  max-height: 85vh;
  overflow-y: auto;
}
.overlay-card h2 {
  font-size: 1.15rem;
  text-align: center;
  margin-bottom: 0.8rem;
}
.chapter-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
}
.chapter-chip {
  width: 100%;
  border: 2px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
  border-radius: 12px;
  padding: 0.75rem 0.5rem;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  line-height: 1.3;
}
.chapter-chip.selected {
  border-color: var(--teal);
  background: var(--teal);
  color: #fff;
}
.chapter-chip-badge {
  display: block;
  font-size: 0.68rem;
  font-weight: 500;
  opacity: 0.85;
  margin-top: 0.1rem;
}

.chapter-action-btn {
  background: var(--card-bg);
  color: var(--teal-dark);
  border: 2px solid var(--teal);
  margin-bottom: 0.6rem;
}
.chapter-action-btn:active { background: var(--bg); }

.rename-chapter-input {
  width: 100%;
  font: inherit;
  font-size: 1.15rem;
  padding: 0.75rem 0.8rem;
  border: 2px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  color: var(--text);
  margin-bottom: 1rem;
  box-sizing: border-box;
  text-align: right;
}

.print-bar {
  margin-bottom: 0.7rem;
}
.btn.btn-print {
  background: var(--teal);
  color: #fff;
}
.btn.btn-print:active { background: var(--teal-dark); }
.btn.btn-print:disabled { opacity: 0.7; }
.btn.btn-print.btn-print-ready {
  background: var(--save);
}
.btn.btn-print.btn-print-ready:active { background: var(--save-dark); }

.compact-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.7rem 0.9rem;
  margin-bottom: 0.55rem;
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
  cursor: pointer;
  transition: padding 0.2s ease;
}
.compact-card-text {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.35;
  max-height: 2.7em;
  overflow: hidden;
  text-align: center;
}
.compact-card-text .compact-eq {
  color: var(--teal);
  font-weight: 800;
}
.compact-card .btn-move {
  display: none;
  background: var(--restore);
  margin-top: 0.8rem;
}
.compact-card .btn-move:active { background: var(--restore-dark); }
.compact-card.expanded {
  padding: 1.4rem 1.1rem;
}
.compact-card.expanded .compact-card-text {
  font-size: 1.55rem;
  max-height: none;
}
.compact-card.expanded .btn-move {
  display: block;
}

.toast {
  position: fixed;
  bottom: 4.6rem;
  left: 1rem;
  right: 1rem;
  max-width: 600px;
  margin: 0 auto;
  background: var(--teal-dark);
  color: #fff;
  border-radius: 14px;
  padding: 0.8rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 1rem;
  z-index: 30;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
}
.toast.hidden { display: none; }

.celebrate-overlay {
  align-items: center;
  background: rgba(20,20,15,0.65);
}
.celebrate-card {
  border-radius: var(--radius);
  text-align: center;
  padding: 1.6rem 1.3rem;
}
.celebrate-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--save-dark);
  margin-bottom: 0.8rem;
  line-height: 1.35;
}
.celebrate-progress-text {
  font-size: 1.05rem;
  color: var(--text);
  margin: 0 0 0.8rem;
  line-height: 1.5;
}
.celebrate-bar-track {
  height: 14px;
  margin-bottom: 1.2rem;
}
.toast-undo {
  background: #fff;
  color: var(--teal-dark);
  border: none;
  border-radius: 10px;
  padding: 0.45rem 0.9rem;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  flex: 0 0 auto;
}
.toast-undo.hidden { display: none; }

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1E1C17;
    --card-bg: #2A2721;
    --text: #F3EFE6;
    --text-soft: #C9C2B2;
    --border: #45402F;
  }
  .chapter-chip { background: #2A2721; }
}