/* LifeChapters Memoir Writer — senior-friendly, offline-first */

:root {
  --accent: #1B4F72;
  --accent-hover: #154360;
  --accent-soft: #E8F1F8;
  --accent-ink: #0E2A3D;
  --bg: #F7F5F0;
  --surface: #FFFFFF;
  --surface-2: #EEEBE4;
  --text: #1A1A1A;
  --text-muted: #4A4A4A;
  --border: #D0CBC2;
  --danger: #B91C1C;
  --danger-soft: #FEE2E2;
  --success: #166534;
  --success-soft: #DCFCE7;
  --warn: #92400E;
  --warn-soft: #FEF3C7;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 3px rgba(26, 26, 26, 0.08), 0 4px 16px rgba(26, 26, 26, 0.05);
  --shadow-lg: 0 8px 28px rgba(26, 26, 26, 0.12);
  --font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", Times, serif;
  --touch: 48px;
  --max: 920px;
}

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

html {
  font-size: 18px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  display: flex;
  flex-direction: column;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  z-index: 1000;
  background: var(--accent);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
}

.skip-link:focus {
  top: 1rem;
}

/* Header */
.app-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem 1.25rem 0.75rem;
}

.brand {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  margin-bottom: 0.85rem;
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.brand h1 {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent-ink);
  letter-spacing: -0.01em;
}

.tagline {
  margin: 0.15rem 0 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding-bottom: 0.65rem;
}

.nav-btn {
  min-height: var(--touch);
  min-width: var(--touch);
  padding: 0.55rem 0.9rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
}

.nav-btn:hover {
  background: var(--surface-2);
  color: var(--text);
}

.nav-btn.is-active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* Main */
.main {
  flex: 1;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

.view[hidden] {
  display: none !important;
}

.view-header {
  margin-bottom: 1.35rem;
}

.view-header-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.view-header h2 {
  margin: 0 0 0.35rem;
  font-size: 1.5rem;
  color: var(--accent-ink);
}

.view-lead {
  margin: 0;
  color: var(--text-muted);
  max-width: 40rem;
}

/* Stats */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow);
}

.stat-card.stat-ok {
  border-color: #A7C4B5;
  background: linear-gradient(180deg, #fff 0%, #F0F7F3 100%);
}

.stat-label {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 600;
}

.stat-value {
  margin: 0.25rem 0 0.5rem;
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--accent-ink);
  line-height: 1.1;
}

.stat-link {
  background: none;
  border: none;
  padding: 0.35rem 0;
  min-height: 44px;
  color: var(--accent);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  margin-bottom: 1.15rem;
  box-shadow: var(--shadow);
}

.hero-card {
  border-color: #B8D0E4;
  background: linear-gradient(160deg, #fff 0%, var(--accent-soft) 100%);
}

.card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.65rem;
}

.card-head h3,
.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  color: var(--accent-ink);
}

.card-head h3 {
  margin-bottom: 0;
}

.card-body-text {
  margin: 0 0 1rem;
  color: var(--text);
}

.muted-sm {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* Session */
.session-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.session-timer {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem 1.25rem;
  padding: 1rem 1.15rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.session-label {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.session-time {
  font-size: 2rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--accent-ink);
  letter-spacing: 0.02em;
}

.session-status {
  font-weight: 600;
  color: var(--accent);
  padding: 0.2rem 0.65rem;
  background: var(--accent-soft);
  border-radius: 999px;
  font-size: 0.9rem;
}

/* Prompt */
.prompt-quote {
  margin: 0 0 1rem;
  padding: 1rem 1.15rem;
  border-left: 4px solid var(--accent);
  background: var(--surface-2);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.prompt-quote p {
  margin: 0 0 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.5;
}

/* Buttons */
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: var(--touch);
  min-width: var(--touch);
  padding: 0.65rem 1.15rem;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-secondary {
  background: var(--surface);
  color: var(--accent-ink);
  border-color: var(--border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--surface-2);
  border-color: var(--accent);
}

.btn-text {
  background: transparent;
  border-color: transparent;
  color: var(--accent);
  min-height: 44px;
  padding: 0.4rem 0.65rem;
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.btn-sm {
  min-height: 44px;
  padding: 0.45rem 0.85rem;
  font-size: 0.95rem;
}

.btn-danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}

.btn-danger:hover:not(:disabled) {
  background: #991B1B;
}

.btn-icon {
  min-width: var(--touch);
  padding-left: 0.75rem;
  padding-right: 0.75rem;
}

.back-btn {
  margin-bottom: 0.35rem;
  display: inline-flex;
}

.file-label {
  cursor: pointer;
  margin: 0;
}

/* Forms */
.form-card {
  margin-bottom: 1.25rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.15rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field-full {
  grid-column: 1 / -1;
}

.field-sm {
  min-width: 140px;
}

.field label,
.label-row label {
  font-weight: 600;
  color: var(--text);
}

.label-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.req {
  color: var(--danger);
}

.hint,
.field-hint {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.field-hint {
  margin: 0.35rem 0 0;
}

input[type="text"],
input[type="search"],
input[type="number"],
input[type="date"],
select,
textarea {
  min-height: var(--touch);
  padding: 0.6rem 0.85rem;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  width: 100%;
}

textarea {
  min-height: 6rem;
  resize: vertical;
  line-height: 1.5;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.inline-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
  margin-bottom: 1rem;
}

.inline-form .field {
  flex: 1 1 200px;
}

.inline-form .field-sm {
  flex: 0 1 160px;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.15rem;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.filter-bar .field {
  flex: 1 1 160px;
}

/* Lists */
.item-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.card-list {
  gap: 0.85rem;
}

.item-card {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem 1rem;
  padding: 1rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.item-card-main {
  flex: 1 1 220px;
  min-width: 0;
}

.item-card h3,
.item-card h4 {
  margin: 0 0 0.3rem;
  font-size: 1.08rem;
  color: var(--accent-ink);
}

.item-meta {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.item-excerpt {
  margin: 0.45rem 0 0;
  color: var(--text);
  font-size: 0.98rem;
}

.item-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  background: var(--surface-2);
  color: var(--text-muted);
  margin-right: 0.35rem;
}

.badge-draft {
  background: var(--warn-soft);
  color: var(--warn);
}

.badge-polished {
  background: var(--accent-soft);
  color: var(--accent);
}

.badge-in-book {
  background: var(--success-soft);
  color: var(--success);
}

.empty-state {
  margin: 0;
  padding: 1.25rem;
  text-align: center;
  color: var(--text-muted);
  background: var(--surface-2);
  border-radius: var(--radius-sm);
}

.empty-state.card {
  border: 1px dashed var(--border);
  background: var(--surface);
}

/* Progress list */
.progress-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.progress-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.35rem 1rem;
  align-items: center;
}

.progress-label {
  font-weight: 600;
  color: var(--text);
}

.progress-count {
  color: var(--text-muted);
  font-size: 0.92rem;
}

.progress-track {
  grid-column: 1 / -1;
  height: 10px;
  background: var(--surface-2);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 999px;
  min-width: 0;
  transition: width 0.25s ease;
}

/* Bars for insights */
.bar-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.bar-row {
  display: grid;
  grid-template-columns: minmax(100px, 140px) 1fr auto;
  gap: 0.5rem 0.75rem;
  align-items: center;
}

.bar-label {
  font-weight: 600;
  font-size: 0.95rem;
}

.bar-track {
  height: 14px;
  background: var(--surface-2);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 999px;
}

.bar-value {
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
  font-weight: 600;
  min-width: 2ch;
  text-align: right;
}

.tips-list {
  margin: 0;
  padding-left: 1.25rem;
}

.tips-list li {
  margin-bottom: 0.55rem;
  color: var(--text);
}

/* Book preview */
.book-preview {
  font-family: var(--font-serif);
  padding: 2rem 1.75rem;
  line-height: 1.65;
}

.book-title-block {
  text-align: center;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.book-title-block h2 {
  margin: 0 0 0.5rem;
  font-size: 1.85rem;
  color: var(--accent-ink);
}

.book-title-block .byline {
  margin: 0;
  color: var(--text-muted);
  font-style: italic;
}

.book-dedication {
  margin: 1rem auto 0;
  max-width: 28rem;
  font-style: italic;
  color: var(--text-muted);
}

.book-chapter {
  margin-bottom: 2.25rem;
}

.book-chapter h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font);
  font-size: 1.35rem;
  color: var(--accent);
  border-bottom: 2px solid var(--accent-soft);
  padding-bottom: 0.4rem;
}

.book-chapter .chapter-sum {
  margin: 0 0 1.15rem;
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.98rem;
}

.book-memory {
  margin-bottom: 1.75rem;
}

.book-memory h4 {
  margin: 0 0 0.5rem;
  font-family: var(--font);
  font-size: 1.1rem;
  color: var(--accent-ink);
}

.book-memory .memory-meta {
  margin: 0 0 0.65rem;
  font-family: var(--font);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.book-memory .prose p {
  margin: 0 0 0.85rem;
  white-space: pre-wrap;
}

.book-empty {
  text-align: center;
  color: var(--text-muted);
  font-family: var(--font);
  padding: 2rem 1rem;
}

/* Modal / dialog */
.modal {
  border: none;
  border-radius: var(--radius);
  padding: 0;
  max-width: min(520px, calc(100vw - 2rem));
  width: 100%;
  box-shadow: var(--shadow-lg);
  background: var(--surface);
  color: var(--text);
}

.modal::backdrop {
  background: rgba(14, 42, 61, 0.45);
}

.modal-inner {
  padding: 1.5rem 1.35rem;
}

.modal-inner h3 {
  margin: 0 0 1rem;
  font-size: 1.2rem;
  color: var(--accent-ink);
}

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.6rem;
  margin-top: 1.25rem;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  max-width: min(420px, calc(100vw - 2rem));
  padding: 0.9rem 1.25rem;
  background: var(--accent-ink);
  color: #fff;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  font-weight: 600;
  text-align: center;
}

.toast[hidden] {
  display: none !important;
}

/* Danger zone */
.danger-zone {
  border-color: #FECACA;
  background: #FFF8F8;
}

/* Footer */
.app-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 1.15rem 1.25rem;
  text-align: center;
}

.app-footer p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* Responsive */
@media (max-width: 640px) {
  .form-grid {
    grid-template-columns: 1fr;
  }

  .bar-row {
    grid-template-columns: 1fr auto;
  }

  .bar-track {
    grid-column: 1 / -1;
  }

  .book-preview {
    padding: 1.25rem 1rem;
  }

  .stat-value {
    font-size: 1.6rem;
  }
}

/* Print */
@media print {
  .skip-link,
  .app-header,
  .app-footer,
  .toast,
  .filter-bar,
  .btn,
  .btn-row,
  .nav-btn,
  #book-form,
  .view-header .btn-row,
  .view-header-row > .btn-row {
    display: none !important;
  }

  body {
    background: #fff;
  }

  .main {
    max-width: none;
    padding: 0;
  }

  .view[hidden] {
    display: none !important;
  }

  #view-book {
    display: block !important;
  }

  .book-preview {
    box-shadow: none;
    border: none;
    padding: 0;
  }

  .card {
    box-shadow: none;
  }
}