:root {
  color-scheme: dark;
  --bg: #16161d;
  --panel: #1b1b23;
  --phone: #202029;
  --surface: #252531;
  --surface-2: #2b2b37;
  --line: #363644;
  --line-soft: rgba(255, 255, 255, .07);
  --text: #f7f7ef;
  --muted: #aaaeb8;
  --quiet: #7d8290;
  --empty: #3d433a;
  --weak: #465829;
  --building: #769622;
  --strong: #abda1a;
  --mastered: #7fa80d;
  --danger: #ff9a8c;
  --radius: 8px;
  --shadow: 0 24px 70px rgba(0, 0, 0, .34);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f6f7f0;
  --panel: #ffffff;
  --phone: #ffffff;
  --surface: #eef0e8;
  --surface-2: #e3e7d9;
  --line: #cfd5c3;
  --line-soft: rgba(22, 22, 29, .08);
  --text: #18191f;
  --muted: #5d6658;
  --quiet: #72796d;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(ellipse at top left, rgba(171, 218, 26, .08), transparent 46%),
    radial-gradient(ellipse at bottom right, rgba(127, 168, 13, .06), transparent 48%),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button, input { font: inherit; }

button {
  color: inherit;
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: .58;
}

h1, h2, h3, p { margin: 0; }

h1 {
  font-size: 1.35rem;
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  font-size: 1rem;
  line-height: 1.2;
}

svg {
  width: 1.15rem;
  height: 1.15rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.app-shell {
  width: min(100vw - 16px, 460px);
  min-height: calc(100vh - 24px);
  margin: 12px auto;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--phone);
  box-shadow: var(--shadow);
}

.topbar,
.reading-top,
.modal-head,
.section-head,
.selected-head,
.detail-title,
.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.topbar {
  min-height: 48px;
}

.topbar p,
.section-head p,
small {
  color: var(--muted);
}

.topbar p {
  margin-top: 4px;
  font-size: .82rem;
  line-height: 1.35;
}

.top-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.icon-btn {
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
}

.icon-btn:hover,
.icon-btn.active {
  border-color: rgba(171, 218, 26, .35);
  background: rgba(171, 218, 26, .13);
  color: var(--strong);
}

.icon-btn.small {
  width: 34px;
  height: 34px;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 46px;
  margin: 8px 0 12px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--muted);
}

.search-box input {
  min-width: 0;
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
}

.tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 4px;
  min-height: 44px;
  padding: 4px;
  border-radius: var(--radius);
  background: rgba(10, 22, 40, .45);
}

.tabs button {
  min-width: 0;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-size: .64rem;
  font-weight: 900;
  padding: 0 6px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tabs .active {
  background: linear-gradient(135deg, var(--surface-2), var(--surface));
  color: var(--text);
  box-shadow: 0 2px 8px rgba(0, 0, 0, .2);
}

.home-panel {
  padding-top: 14px;
}

.section-head {
  align-items: end;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.section-head > div {
  flex: 1 1 180px;
}

.section-head .primary-btn {
  flex: 1 1 100%;
  align-self: stretch;
  width: 100%;
}

.section-head p {
  margin-top: 5px;
  font-size: .82rem;
  line-height: 1.34;
}

.primary-btn,
.secondary-btn,
.danger-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 40px;
  padding: 0 12px;
  border-radius: var(--radius);
  font-size: .8rem;
  font-weight: 950;
}

.primary-btn {
  border: 1px solid var(--strong);
  background: var(--strong);
  color: #263500;
}

.primary-btn.quiet,
.secondary-btn {
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--text);
}

.danger-btn {
  border: 1px solid #6b3b35;
  background: #2b1714;
  color: var(--danger);
}

.full {
  width: 100%;
  margin-top: 10px;
}

.progress-card {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.mushaf-strip {
  display: grid;
  grid-template-columns: repeat(30, minmax(0, 1fr));
  gap: 0;
  height: 8px;
  margin-bottom: 6px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--line-soft);
}

.mushaf-strip-segment {
  height: 100%;
}

.section-caption {
  color: var(--muted);
  font-size: .72rem;
  font-weight: 900;
}

.mushaf-strip-label {
  margin-bottom: 9px;
  text-align: center;
}

.juz-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 7px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}

.juz-cell,
.page-cell,
.page-chip {
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 4px;
  font-weight: 950;
}

.juz-cell {
  min-height: 30px;
}

.juz-cell.selected {
  outline: 2px solid var(--strong);
  outline-offset: 2px;
}

.selected-head {
  margin: 11px 0 8px;
  font-size: .86rem;
}

.summary-pills {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: end;
}

.small-pill,
.type-pill {
  display: inline-grid;
  place-items: center;
  min-width: 28px;
  min-height: 24px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 950;
}

.type-pill {
  background: var(--surface-2);
  color: var(--muted);
  white-space: nowrap;
}

.page-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.page-cell {
  min-height: 34px;
  font-size: .68rem;
}

.empty { background: var(--empty); color: #f7f7ef; }
.weak { background: var(--weak); color: #f7f7ef; }
.building { background: var(--building); color: #fef3c7; }
.strong { background: var(--strong); color: #263500; }
.mastered { background: var(--mastered); color: #263500; }

.label {
  margin: 14px 0 8px;
  color: var(--muted);
  font-size: .72rem;
  font-weight: 950;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.queue-list {
  display: grid;
  gap: 8px;
}

.list-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  min-height: 54px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  text-align: left;
}

.list-row strong,
.list-row small {
  display: block;
}

.list-row small {
  margin-top: 3px;
  font-size: .7rem;
  font-weight: 800;
}

.list-row.static > button:first-child {
  min-width: 0;
  flex: 1;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
}

.quick-pages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 7px;
}

.page-chip {
  min-height: 58px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.page-chip small {
  margin-top: 2px;
  font-size: .66rem;
}

.empty-state {
  padding: 14px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: .86rem;
  line-height: 1.4;
}

.reader-shell {
  position: relative;
  min-height: calc(100vh - 24px);
}

.reading-top {
  min-height: 44px;
  font-weight: 900;
}

.reading-meta {
  min-width: 0;
  color: var(--muted);
  font-size: .82rem;
  text-align: center;
}

.page-shell {
  position: relative;
  overflow: hidden;
  margin-top: 8px;
  padding: 18px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  touch-action: pan-y;
  will-change: transform, opacity;
  transform: translateZ(0);
}

.page-surface {
  border-radius: inherit;
}

.revealed-page {
  position: absolute;
  inset: 18px 15px;
  z-index: 0;
  pointer-events: none;
  opacity: 0;
  transform: translateX(0) scale(.992);
  filter: saturate(.94) brightness(.92);
}

.active-page {
  position: relative;
  z-index: 1;
  will-change: transform, opacity;
}

.page-shell.dragging {
  cursor: grabbing;
  user-select: none;
}

.page-shell[data-reveal-direction="next"] .revealed-page {
  opacity: 1;
  transform: translateX(18px) scale(.992);
}

.page-shell[data-reveal-direction="previous"] .revealed-page {
  opacity: 1;
  transform: translateX(-18px) scale(.992);
}

.page-shell:not(.dragging) .active-page,
.page-shell:not(.dragging) .revealed-page {
  transition: transform 220ms cubic-bezier(.2, .8, .2, 1), opacity 220ms cubic-bezier(.2, .8, .2, 1), filter 220ms cubic-bezier(.2, .8, .2, 1);
}

.page-shell.dragging .revealed-page {
  opacity: 1;
}

.ayah-mark.inert {
  pointer-events: none;
}

.page-shell.odd::after,
.page-shell.even::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 18px;
  pointer-events: none;
  opacity: .58;
  background:
    linear-gradient(90deg, rgba(171, 218, 26, .12), rgba(171, 218, 26, 0)),
    linear-gradient(90deg, transparent 3px, rgba(171, 218, 26, .24) 3px 4px, transparent 4px 8px, rgba(171, 218, 26, .18) 8px 9px, transparent 9px 13px, rgba(171, 218, 26, .12) 13px 14px, transparent 14px);
}

.page-shell.odd::after { right: 0; }
.page-shell.even::before {
  left: 0;
  transform: scaleX(-1);
}

.mushaf {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 3px;
  padding-inline: 20px;
  color: #f6f1df;
  font-family: "Traditional Arabic", "Amiri", "Scheherazade New", serif;
  font-size: clamp(1.02rem, 4.4vw, 1.24rem);
  line-height: 1.72;
}

.mushaf-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .38em;
  min-height: 28px;
  white-space: nowrap;
  user-select: text;
}

.mushaf-line.unjustified {
  justify-content: center;
}

.mushaf-line.short,
.surah-header,
.basmala {
  justify-content: center;
  text-align: center;
}

.surah-header,
.basmala {
  color: var(--strong);
  font-weight: 800;
}

.surah-header {
  padding: 7px 0;
  border-block: 1px solid var(--line-soft);
  font-size: 1.12em;
}

.basmala {
  min-height: 34px;
}

.fit-93 { font-size: .93em; }
.fit-89 { font-size: .89em; }
.fit-84 { font-size: .84em; }

.qword {
  min-width: max-content;
}

.ayah-mark {
  position: relative;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  min-width: 1.78rem;
  width: 1.78rem;
  height: 1.78rem;
  border: 1px solid rgba(171, 218, 26, .75);
  border-radius: 999px;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  font-size: .68rem;
  font-weight: 950;
  line-height: 1;
  user-select: none;
  isolation: isolate;
}

.ayah-mark::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 999px;
  pointer-events: none;
  opacity: 0;
  z-index: -1;
}

.ayah-mark.transition-weak::after,
.ayah-mark.transition-building::after,
.ayah-mark.transition-strong::after {
  opacity: 1;
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 2px), #000 calc(100% - 1px));
  mask: radial-gradient(farthest-side, transparent calc(100% - 2px), #000 calc(100% - 1px));
}

.ayah-mark.transition-weak::after {
  background: conic-gradient(from 270deg, transparent 0deg 300deg, rgba(171, 218, 26, .8) 300deg 360deg);
}

.ayah-mark.transition-building::after {
  background: conic-gradient(from 240deg, transparent 0deg 210deg, rgba(171, 218, 26, .85) 210deg 360deg);
}

.ayah-mark.transition-strong::after {
  background: conic-gradient(from 210deg, transparent 0deg 120deg, rgba(171, 218, 26, .9) 120deg 360deg);
}

.ayah-mark.transition-mastered::after {
  opacity: 1;
  border: 2px solid rgba(171, 218, 26, .95);
}

.ayah-mark.target,
.ayah-mark.transition-target {
  outline: 3px solid #f7f7ef;
  outline-offset: 2px;
}

.pulse {
  animation: pulse .42s ease-out;
}

@keyframes pulse {
  0% { transform: scale(1); }
  45% { transform: scale(1.22); }
  100% { transform: scale(1); }
}

.swipe-hint {
  margin-top: 10px;
  color: var(--quiet);
  font-size: .76rem;
  text-align: center;
}

.floating-undo {
  position: fixed;
  right: max(22px, calc((100vw - 460px) / 2 + 22px));
  bottom: 24px;
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 12px;
  background: var(--strong);
  color: #263500;
  box-shadow: 0 14px 28px rgba(0, 0, 0, .34);
}

.review-bar {
  position: sticky;
  bottom: 8px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  min-height: 52px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(17, 24, 39, .96);
  box-shadow: 0 16px 32px rgba(0, 0, 0, .3);
  font-size: .78rem;
  font-weight: 950;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: end center;
  padding: 12px;
  background: rgba(0, 0, 0, .48);
}

.modal {
  width: min(100%, 460px);
  max-height: min(760px, calc(100vh - 24px));
  overflow: auto;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--phone);
  box-shadow: var(--shadow);
}

.modal-head {
  min-height: 42px;
}

.detail-card {
  margin-top: 12px;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.detail-title {
  color: var(--muted);
  font-size: .76rem;
  font-weight: 950;
  text-transform: uppercase;
}

.detail-count {
  margin: 12px 0;
  font-size: 3rem;
  font-weight: 950;
  line-height: 1;
}

.fatal-error {
  margin: 12px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--danger);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .78rem;
  line-height: 1.45;
}

.actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.setting-row {
  min-height: 58px;
  margin-bottom: 8px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: .84rem;
  font-weight: 900;
}

.setting-row small {
  display: block;
  margin-top: 3px;
  font-size: .7rem;
}

.setting-row input[type="number"] {
  width: 78px;
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
  color: var(--text);
  text-align: center;
  font-weight: 900;
}

.toggle {
  width: 44px;
  height: 26px;
  padding: 3px;
  border: 0;
  border-radius: 999px;
  background: #3b3b47;
}

.toggle::after {
  content: "";
  display: block;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #dce7cc;
}

.toggle.on {
  background: var(--strong);
}

.toggle.on::after {
  margin-left: 18px;
}

.file-btn {
  position: relative;
  overflow: hidden;
}

.file-btn input {
  position: absolute;
  inset: 0;
  opacity: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

@media (min-width: 900px) {
  .home-shell {
    width: min(980px, calc(100vw - 28px));
  }

  .home-panel {
    display: block;
  }

  .page-grid {
    grid-template-columns: repeat(10, 1fr);
  }

  .queue-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .reader-shell {
    width: min(560px, calc(100vw - 28px));
  }
}

@media (max-width: 420px) {
  .app-shell {
    width: 100vw;
    min-height: 100vh;
    margin: 0;
    border-radius: 0;
    border-inline: 0;
  }

  .mushaf {
    padding-inline: 8px;
    font-size: .98rem;
  }

  .section-head {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }

  .section-head .primary-btn {
    width: 100%;
  }
}

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