:root {
  color-scheme: light;
  --primary-color: #285847;
  --primary-hover: #1f493a;
  --danger-color: #a44c43;
  --success-color: #6f875f;
  --text-primary: #253329;
  --text-secondary: #687267;
  --border-color: #d9ded2;
  --bg-light: #f7f7f0;
  --extension-gradient: linear-gradient(145deg, #285847, #214a3c);
  --card-shadow: 0 16px 46px rgba(43, 67, 51, .09);
  --paper: #f7f7f0;
  --surface: #fffef9;
  --ink: #253329;
  --muted: #687267;
  --line: #d9ded2;
  --navy: #285847;
  --navy2: #1f493a;
  --accent: #81976f;
  --danger: #a44c43;
  --radius: 18px;
  --shadow: 0 16px 46px rgba(43, 67, 51, .09);
}

* { -webkit-tap-highlight-color: transparent; }

html {
  min-height: 100%;
  background:
    radial-gradient(circle at 8% -4%, rgba(129, 151, 111, .17), transparent 30rem),
    radial-gradient(circle at 100% 4%, rgba(212, 220, 199, .5), transparent 34rem),
    var(--paper);
}

body {
  min-height: 100vh;
  background: transparent;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
a,
input,
select,
textarea { transition: border-color .18s ease, background-color .18s ease, color .18s ease, transform .18s ease, box-shadow .18s ease; }

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(40, 88, 71, .2);
  outline-offset: 3px;
}

.app-shell {
  display: flex;
  flex-direction: column;
  max-width: 1220px;
  background: rgba(255, 254, 249, .96);
  border-color: var(--line);
  box-shadow: 0 26px 80px rgba(43, 67, 51, .12);
}

.topbar {
  order: 1;
  background: rgba(255, 254, 249, .95);
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  box-shadow: none;
}

.brand-lockup { gap: 12px; }

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  box-shadow: 0 6px 16px rgba(40, 88, 71, .15);
}

.brand-lockup p {
  color: #69805d;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .18em;
}

.brand-lockup h1 {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
}

.nav-button,
.topbar .text-button {
  color: var(--primary-color);
}

#topAction:not(.hidden) {
  border-color: var(--primary-color);
  background: var(--primary-color);
  color: #fffef9;
}

#topAction:not(.hidden):hover { background: var(--primary-hover); }

#app {
  order: 2;
  width: 100%;
  flex: 1 0 auto;
}

.screen { padding-top: 28px; }

.hero {
  background:
    linear-gradient(140deg, rgba(238, 243, 230, .98), rgba(248, 248, 241, .98)),
    var(--surface);
  color: var(--ink);
  border: 1px solid #d6dfcf;
  border-radius: 22px;
  box-shadow: none;
}

.hero .kicker,
.kicker,
.section-label {
  color: #69805d;
  font-weight: 800;
  letter-spacing: .16em;
}

.hero h2,
.section-heading h2,
.sheet-head h2,
.source-header h2,
.progress-card h2,
.reader-header h2,
.settings-group > h2,
.note-card h3 {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
}

.hero h2 { letter-spacing: -.035em; }

.hero p:not(.kicker) { color: #5f6e63; }

.primary-button,
.hero .primary-button {
  border-radius: 12px;
  background: var(--primary-color);
  color: #fffef9;
  box-shadow: 0 9px 24px rgba(40, 88, 71, .16);
}

.primary-button:hover,
.hero .primary-button:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.secondary-button,
.choice-button,
.note-card,
.panel,
.progress-card,
.settings-card,
.reader-actions button {
  border-color: var(--line);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: none;
}

.note-card { border-left: 4px solid transparent; }

.note-card:hover {
  transform: translateY(-2px);
  border-color: #bdcab5;
  border-left-color: var(--accent);
  box-shadow: 0 12px 26px rgba(43, 67, 51, .09);
}

.note-icon {
  border-radius: 11px;
  background: #e7edde;
  color: var(--primary-color);
}

.chevron { color: #7b8d72; }

.text-button,
.setting-row button,
.reader-actions button { color: var(--primary-color); }

.filter-chip {
  border-color: var(--line);
  background: var(--surface);
}

.filter-chip.active,
.segmented button.selected {
  border-color: var(--primary-color);
  background: var(--primary-color);
  color: #fff;
}

.text-input,
.search-input,
select,
textarea {
  border-color: #cdd5c7;
  border-radius: 12px;
  background: #fffefb;
  color: var(--ink);
}

.text-input:focus,
.search-input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(40, 88, 71, .12);
}

.progress-bar { background: #e1e7dc; }
.progress-bar span { background: var(--primary-color); }
.step.active .step-dot { background: var(--primary-color); box-shadow: 0 0 0 5px rgba(40, 88, 71, .12); }
.step.done .step-dot { background: var(--accent); }

.reader-header { border-bottom-color: var(--line); }

.document {
  background: #fffefb;
  border-color: var(--line);
  border-radius: 18px;
  color: #2d3930;
  font-family: Georgia, "Times New Roman", serif;
}

.document h2 {
  color: var(--primary-color);
  border-bottom-color: #cbd7c3;
}

.document h3,
.document strong { color: #294436; }
.document blockquote { border-left-color: var(--accent); }

.notice {
  border-left-color: var(--accent);
  background: #edf1e7;
  color: #526052;
}

.sheet-card,
#addDialog .sheet-card,
#keyDialog .sheet-card {
  background: var(--paper);
  border-color: var(--line);
  border-radius: 22px;
}

.sheet::backdrop { background: rgba(28, 45, 36, .5); }

body #addDialog .close-button {
  border-color: var(--line);
  background: var(--surface);
  color: var(--primary-color);
}

body #addDialog .close-button:focus-visible {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(40, 88, 71, .16);
}

body #addDialog .iphone-shortcut-card,
body .home-shortcut-card {
  border-color: #cbd7c3;
  background:
    radial-gradient(circle at 100% 0%, rgba(129, 151, 111, .17), transparent 46%),
    linear-gradient(135deg, #f1f4eb, #fafaf5),
    var(--surface);
  color: var(--ink);
  box-shadow: none;
}

body #addDialog .iphone-only-badge,
body .home-shortcut-card .iphone-only-badge {
  background: #dfe8d8;
  color: var(--primary-color);
}

body #addDialog .shortcut-install-button,
body .home-shortcut-card .shortcut-install-button {
  border-radius: 12px;
  background: var(--primary-color);
  color: #fffef9;
}

.tabbar {
  order: 4;
  background: rgba(255, 254, 249, .96);
  border-color: var(--line);
}

.tab { color: #718074; }
.tab.active { color: var(--primary-color); }

.tab::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 7px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
  vertical-align: 1px;
}

.tab.active::before { background: currentColor; }

.site-footer {
  order: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin: 4px 18px 94px;
  padding: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer p {
  margin: 0 0 5px;
  color: #69805d;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .16em;
}

.site-footer strong {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 17px;
  font-weight: 500;
}

.site-footer a {
  flex: 0 0 auto;
  padding: 11px 14px;
  border: 1px solid #c6d1bf;
  border-radius: 11px;
  color: var(--primary-color);
  font-size: 13px;
  font-weight: 750;
  text-decoration: none;
}

.site-footer a:hover {
  border-color: var(--primary-color);
  background: #edf2e7;
  transform: translateY(-1px);
}

.toast { background: #253329; }

@media (min-width: 900px) {
  .app-shell {
    width: min(1220px, calc(100% - 48px));
    min-height: calc(100vh - 32px);
    margin: 16px auto;
    border-radius: 24px;
  }

  .topbar {
    grid-template-columns: 150px 1fr 150px;
    min-height: 90px;
    padding: 18px 34px;
  }

  .brand-icon { width: 46px; height: 46px; border-radius: 13px; }

  .tabbar {
    order: 2;
    padding: 0 34px;
    background: #f2f4ec;
  }

  .tab { min-width: 130px; }
  .tab::after { right: 28px; left: 28px; }

  #app { order: 3; }

  .screen { padding: 42px 48px 54px; }

  #app > .screen:has(.hero) {
    grid-template-columns: minmax(0, 1.22fr) minmax(330px, .78fr);
    gap: 20px;
  }

  #app > .screen:has(.hero) > .hero,
  #app > .screen:has(.hero) > .home-shortcut-card {
    min-height: 360px;
    border-radius: 22px;
  }

  #app > .screen:has(.hero) > .hero { padding: 52px; }

  .hero h2 {
    max-width: 660px;
    font-size: clamp(42px, 4.4vw, 62px);
  }

  .site-footer {
    order: 4;
    margin: 0 48px;
    padding: 26px 0 30px;
  }
}

@media (max-width: 899px) {
  .brand-lockup { gap: 8px; }
  .brand-icon { width: 34px; height: 34px; border-radius: 9px; }
  .brand-lockup p { display: none; }
  .brand-lockup h1 { margin: 0; }
}

@media (max-width: 560px) {
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    margin-right: 18px;
    margin-left: 18px;
  }

  .site-footer a { width: 100%; text-align: center; }

  #addDialog .sheet-card,
  #keyDialog .sheet-card { border-radius: 24px 24px 0 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media print {
  .site-footer { display: none !important; }
}