@import url("https://fonts.googleapis.com/css2?family=Allison&family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;0,700;1,400;1,600&family=DM+Mono:wght@400;500&family=Hurricane&family=Inter:wght@300;400;500;600;700&family=Qwigley&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400;1,500;1,600&display=swap");

:root {
  --font-sans: "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-display: "Cormorant Garamond", Georgia, serif;
  --font-mono: "DM Mono", ui-monospace, monospace;

  --bg: #041026;
  --bg-alt: #072048;
  --surface: #0A1A3A;
  --surface-hover: #0E2450;
  --text: #F6FBFF;
  --text-secondary: #B6D6FF;
  --text-muted: #5A7EA8;
  --accent: #0D6EFD;
  --accent-hover: #38B6FF;
  --accent-text: #FFFFFF;
  --accent-soft: rgba(13, 110, 253, 0.12);
  --accent-line: rgba(13, 110, 253, 0.4);
  --border: #1A3060;
  --border-light: #122448;
  --divider: #1A3060;
  --shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.4);
  --nav-bg: rgba(10, 26, 58, 0.72);
  --overlay: rgba(0, 0, 0, 0.6);
  --success: #34D399;
  --error: #F87171;
  --warn: #FBBF24;
  --star: #38B6FF;
  --radius: 6px;
  --radius-lg: 12px;

  --book-stage-bg: radial-gradient(ellipse at 50% 30%, var(--bg-alt) 0%, var(--bg) 60%, #020914 100%);
  --book-page-bg: var(--surface);
  --book-page-text: var(--text);
  --book-page-dim: var(--text-secondary);
  --book-accent: var(--accent);
  --book-accent-warm: var(--accent-hover);
  --book-frame: rgba(191, 155, 80, 0.28);
  --book-frame-corner: rgba(212, 175, 95, 0.45);
  --book-input-border: var(--border);
  --book-btn-bg: var(--accent);
  --book-btn-color: var(--accent-text);
  --book-cover: linear-gradient(135deg, #020914 0%, #010510 100%);
  --book-spine: linear-gradient(
    90deg,
    transparent 0%,
    rgba(0, 0, 0, 0.35) 40%,
    rgba(0, 0, 0, 0.5) 50%,
    rgba(0, 0, 0, 0.35) 60%,
    transparent 100%
  );
}

:root[data-theme="light"] {
  --bg: #F7FAFF;
  --bg-alt: #E9F1FA;
  --surface: #FFFFFF;
  --surface-hover: #F1F6FC;
  --text: #071426;
  --text-secondary: #43536D;
  --text-muted: #7588A2;
  --accent: #2563EB;
  --accent-hover: #164BC5;
  --accent-soft: rgba(37, 99, 235, 0.09);
  --accent-line: rgba(37, 99, 235, 0.26);
  --border: #C9D7E8;
  --border-light: #E1E9F2;
  --divider: #D6E0EB;
  --shadow: 0 1px 3px rgba(7, 20, 38, 0.06);
  --shadow-lg: 0 18px 44px rgba(31, 60, 104, 0.12);
  --nav-bg: rgba(248, 251, 255, 0.78);
  --overlay: rgba(4, 16, 38, 0.45);
  --success: #34A853;
  --error: #EA4335;
  --star: #2F80ED;

  --book-stage-bg: radial-gradient(ellipse at 50% 30%, #FFFFFF 0%, var(--bg) 60%, var(--bg-alt) 100%);
  --book-cover: linear-gradient(135deg, #C8D6E8 0%, #F0F4FA 100%);
  --book-frame: rgba(170, 135, 60, 0.22);
  --book-frame-corner: rgba(170, 135, 60, 0.4);
}

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

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

html {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--font-sans);
  background-color: transparent;
  letter-spacing: 0;
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-color: var(--bg);
  background-image:
    radial-gradient(1px 1px at 25% 20%, rgba(255, 255, 255, 0.92), transparent 60%),
    radial-gradient(1px 1px at 65% 35%, rgba(182, 214, 255, 0.75), transparent 60%),
    radial-gradient(1.5px 1.5px at 82% 70%, rgba(255, 255, 255, 0.88), transparent 60%),
    radial-gradient(1px 1px at 12% 78%, rgba(255, 255, 255, 0.6), transparent 60%),
    radial-gradient(1px 1px at 45% 55%, rgba(182, 214, 255, 0.55), transparent 60%),
    radial-gradient(1.5px 1.5px at 90% 18%, rgba(255, 255, 255, 0.8), transparent 60%),
    radial-gradient(1200px 700px at 18% -10%, rgba(13, 110, 253, 0.28), transparent 62%),
    radial-gradient(900px 600px at 82% -5%, rgba(56, 182, 255, 0.2), transparent 62%),
    radial-gradient(1100px 600px at 50% 115%, rgba(10, 26, 58, 0.7), transparent 70%);
  background-size:
    220px 220px,
    180px 180px,
    310px 310px,
    260px 260px,
    200px 200px,
    340px 340px,
    100% 100%,
    100% 100%,
    100% 100%;
  background-position:
    0 0,
    40px 60px,
    100px 30px,
    70px 120px,
    150px 80px,
    20px 200px,
    center,
    center,
    center;
  background-repeat:
    repeat,
    repeat,
    repeat,
    repeat,
    repeat,
    repeat,
    no-repeat,
    no-repeat,
    no-repeat;
}

:root[data-theme="light"] body::before {
  background-image:
    radial-gradient(980px 620px at 14% -8%, rgba(37, 99, 235, 0.16), transparent 62%),
    radial-gradient(820px 540px at 88% 2%, rgba(124, 92, 255, 0.12), transparent 64%),
    radial-gradient(760px 520px at 18% 86%, rgba(236, 111, 86, 0.1), transparent 66%),
    radial-gradient(920px 620px at 72% 100%, rgba(94, 151, 137, 0.14), transparent 68%),
    linear-gradient(180deg, #FBFDFF 0%, #F5F8FD 48%, #F8FAFE 100%);
}

body::after {
  content: "";
  position: fixed;
  inset: -20% -12% auto -12%;
  height: 88vh;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(55% 70% at 22% 32%, rgba(110, 231, 183, 0.5), transparent 55%),
    radial-gradient(50% 70% at 56% 18%, rgba(56, 182, 255, 0.45), transparent 60%),
    radial-gradient(45% 65% at 80% 42%, rgba(167, 139, 250, 0.4), transparent 60%),
    radial-gradient(50% 60% at 40% 58%, rgba(13, 110, 253, 0.32), transparent 60%);
  filter: blur(70px) saturate(140%);
  mix-blend-mode: screen;
  opacity: 0.78;
  animation:
    aurora-drift 26s ease-in-out infinite alternate,
    aurora-hue 40s linear infinite;
  will-change: transform, opacity, filter;
}

:root[data-theme="light"] body::after {
  inset: -15% -12% auto -12%;
  height: 82vh;
  background:
    radial-gradient(46% 64% at 20% 24%, rgba(236, 111, 86, 0.2), transparent 62%),
    radial-gradient(50% 68% at 60% 12%, rgba(96, 165, 250, 0.34), transparent 64%),
    radial-gradient(42% 62% at 84% 38%, rgba(124, 92, 255, 0.2), transparent 64%),
    radial-gradient(48% 58% at 42% 62%, rgba(94, 151, 137, 0.18), transparent 62%);
  filter: blur(76px) saturate(112%);
  mix-blend-mode: multiply;
  opacity: 0.42;
}

@keyframes aurora-drift {
  0% { transform: translate3d(-6%, -3%, 0) scale(1); opacity: 0.5; }
  25% { transform: translate3d(4%, 5%, 0) scale(1.08); opacity: 0.8; }
  50% { transform: translate3d(7%, -2%, 0) scale(1.14); opacity: 0.9; }
  75% { transform: translate3d(-3%, 4%, 0) scale(1.05); opacity: 0.65; }
  100% { transform: translate3d(6%, -1%, 0) scale(1.02); opacity: 0.55; }
}

@keyframes aurora-hue {
  from { filter: blur(70px) saturate(140%) hue-rotate(0deg); }
  to { filter: blur(70px) saturate(140%) hue-rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  body::after,
  .spark::before {
    animation: none;
  }
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--accent-hover);
}

button,
input,
textarea,
select {
  font: inherit;
  letter-spacing: 0;
  color: inherit;
}

button:not(:disabled),
[role="button"]:not([aria-disabled="true"]) {
  cursor: pointer;
}

button:disabled {
  cursor: default;
}

:where(a, button, input, textarea, select, [role="button"]):focus-visible {
  outline: 2px solid color-mix(in oklab, var(--accent) 72%, white 28%);
  outline-offset: 2px;
}

::selection {
  background: var(--accent-soft);
  color: var(--accent);
}

h1,
h2,
h3,
h4,
h5 {
  margin: 0;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: 0;
}

.shell {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 14px clamp(18px, 4vw, 44px);
  background: var(--nav-bg);
  border-bottom: 1px solid var(--divider);
  backdrop-filter: blur(22px);
}

.mobile-menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  margin: 0;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: color-mix(in oklab, var(--surface) 86%, transparent);
  color: var(--text);
  box-shadow: var(--shadow);
}

.mobile-menu-toggle span {
  width: 17px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-open .mobile-menu-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-open .mobile-menu-toggle span:nth-child(2) {
  opacity: 0;
}

.nav-open .mobile-menu-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--text);
  font-family: var(--font-display);
  font-size: 24px;
}

.spark {
  width: 18px;
  height: 18px;
  display: inline-grid;
  place-items: center;
  color: var(--star);
}

.spark::before {
  content: "✦";
  text-shadow: 0 0 14px color-mix(in oklab, var(--star) 70%, transparent);
  animation: star-pulse 3.8s ease-in-out infinite;
}

@keyframes star-pulse {
  0%,
  100% { opacity: 0.72; transform: scale(0.92); }
  50% { opacity: 1; transform: scale(1.08); }
}

.nav {
  display: flex;
  gap: 6px;
  margin-left: auto;
  overflow: auto;
  scrollbar-width: thin;
}

.nav a,
.pill,
.btn {
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface) 88%, transparent);
  color: var(--text-secondary);
  border-radius: 999px;
  padding: 8px 13px;
  font-size: 13px;
  font-weight: 650;
  white-space: nowrap;
}

.nav a.active,
.nav a:hover,
.pill.active {
  border-color: var(--accent);
  color: var(--text);
  background: var(--accent-soft);
}

.mobile-bottom-nav {
  display: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-lg);
  padding: 11px 15px;
  box-shadow: var(--shadow);
}

.btn.primary {
  background: var(--book-btn-bg);
  border-color: var(--book-btn-bg);
  color: var(--book-btn-color);
}

.btn.ghost {
  background: color-mix(in oklab, var(--surface) 58%, transparent);
}

.page {
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: 42px clamp(18px, 4vw, 44px) 72px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  gap: 28px;
  align-items: stretch;
}

.hub-hero {
  grid-template-columns: minmax(360px, 0.86fr) minmax(560px, 1.14fr);
}

.hero > *,
.book > *,
.grid > *,
.split > * {
  min-width: 0;
}

.kicker,
.label {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.title {
  margin: 14px 0;
  font-family: var(--font-display);
  font-size: clamp(44px, 5.4vw, 78px);
  font-weight: 400;
  line-height: 0.94;
  text-wrap: balance;
}

.subtitle {
  max-width: 640px;
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.65;
}

.panel,
.book,
.card {
  background:
    linear-gradient(180deg, color-mix(in oklab, var(--surface) 96%, transparent), color-mix(in oklab, var(--bg-alt) 86%, transparent));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.panel {
  padding: 22px;
}

.book {
  position: relative;
  display: grid;
  grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
  min-height: 500px;
  overflow: hidden;
  background: var(--book-cover);
}

.book::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent 257px, rgba(255, 255, 255, 0.08) 259px, rgba(0, 0, 0, 0.35) 264px, transparent 288px),
    var(--book-spine);
}

.book::after {
  content: "";
  position: absolute;
  inset: 12px;
  pointer-events: none;
  border: 1px solid var(--book-frame);
  border-radius: calc(var(--radius-lg) - 2px);
}

.page-left {
  padding: 28px;
  background:
    radial-gradient(300px 220px at 50% 0, var(--accent-soft), transparent 70%),
    color-mix(in oklab, var(--bg-alt) 68%, #020914 32%);
  border-right: 1px solid color-mix(in oklab, var(--border) 60%, transparent);
}

.page-right {
  position: relative;
  padding: 34px clamp(22px, 4vw, 48px);
  background: var(--book-stage-bg);
}

.page-right::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.3;
}

.page-right > * {
  position: relative;
  z-index: 1;
}

.book-title {
  font-family: var(--font-display);
  font-size: clamp(30px, 3vw, 38px);
  font-weight: 400;
  line-height: 1.05;
  text-wrap: balance;
}

.progress-ring {
  width: 136px;
  height: 136px;
  margin: 30px auto;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: conic-gradient(var(--accent) 0 68%, var(--border) 68%);
}

.progress-ring span {
  width: 104px;
  height: 104px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: color-mix(in oklab, var(--bg-alt) 64%, #020914 36%);
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 42px;
}

.chapter-dots {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
}

.dot.done,
.dot.on {
  background: var(--accent);
  box-shadow: 0 0 12px color-mix(in oklab, var(--accent) 50%, transparent);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.grid.two {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  padding: 18px;
  min-width: 0;
  overflow-wrap: normal;
}

.card h3,
.panel h3 {
  margin: 4px 0 8px;
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 400;
  overflow-wrap: normal;
  word-break: normal;
}

.muted {
  color: var(--text-secondary);
  overflow-wrap: break-word;
}

.small {
  color: var(--text-muted);
  font-size: 13px;
}

.chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 14px 0;
}

.chip {
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--bg) 86%, transparent);
  color: var(--text-secondary);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 13px;
}

.chip.selected {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--text);
}

.chip span {
  margin-left: 8px;
  color: var(--accent-hover);
}

.api-reveal {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr) minmax(0, 0.9fr);
  gap: 14px;
  margin-top: 18px;
}

.result-column,
.rank-column {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, color-mix(in oklab, var(--surface) 92%, transparent), color-mix(in oklab, var(--bg) 82%, transparent));
  padding: 14px;
}

.result-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
  max-height: 430px;
  overflow: auto;
  padding-right: 2px;
}

.result-list.compact {
  grid-template-columns: 1fr;
}

.result-card,
.mini-result {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  color: var(--text-secondary);
  text-align: left;
  padding: 12px;
}

.result-card strong,
.result-card span {
  display: block;
}

.result-card strong {
  color: var(--text);
  font-family: var(--font-display);
  font-size: 23px;
  font-weight: 400;
  line-height: 1.1;
}

.api-search {
  margin-top: 10px;
}

.microcopy {
  margin: 8px 0 0;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.result-card span {
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 12px;
}

.result-card.selected,
.mini-result.selected {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--accent-line);
}

.rank-list {
  display: grid;
  gap: 9px;
  min-height: 120px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.rank-item {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr) auto auto;
  gap: 8px;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in oklab, var(--surface-hover) 72%, transparent);
  color: var(--text);
  padding: 10px;
}

.rank-item.dragging {
  opacity: 0.45;
  outline: 2px solid var(--accent);
}

.rank-number {
  color: var(--accent-hover);
  font-family: var(--font-mono);
  font-size: 12px;
}

.drag-handle {
  color: var(--text-muted);
  cursor: grab;
  letter-spacing: -4px;
}

.rank-item strong,
.rank-item small {
  display: block;
}

.rank-item small {
  margin-top: 2px;
  color: var(--text-muted);
  font-size: 11px;
}

.icon-btn {
  display: inline-grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in oklab, var(--bg) 78%, transparent);
  color: var(--text-secondary);
}

.icon-btn:disabled {
  opacity: 0.36;
}

.autocomplete {
  position: relative;
}

.autocomplete-menu {
  position: absolute;
  z-index: 20;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: color-mix(in oklab, var(--surface) 96%, #020914 4%);
  box-shadow: var(--shadow-lg);
}

.autocomplete-menu button {
  display: block;
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--border-light);
  background: transparent;
  color: var(--text);
  text-align: left;
  padding: 12px 14px;
}

.autocomplete-menu button:hover,
.autocomplete-menu button:focus {
  background: var(--accent-soft);
}

.spreadsheet {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.sheet-row {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.3fr) auto;
  gap: 8px;
  align-items: center;
}

.sheet-head {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
}

.collection-empty {
  margin-top: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--accent-soft);
  padding: 14px;
}

.question-subblock {
  margin-top: 18px;
  border-top: 1px solid var(--border);
  padding-top: 18px;
}

.question-subblock h3 {
  margin: 4px 0 6px;
  font-size: 26px;
}

.hub-intro {
  display: flex;
  min-height: 500px;
  flex-direction: column;
  justify-content: center;
}

.hub-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 28px;
}

.hub-stats div {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 13px;
  background: color-mix(in oklab, var(--bg) 54%, transparent);
}

.hub-stats strong {
  display: block;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(30px, 3vw, 42px);
  font-weight: 400;
  line-height: 1;
}

.hub-stats span {
  display: block;
  margin-top: 5px;
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.35;
}

.hub-book {
  min-height: 500px;
}

.hub-book .page-right {
  padding-inline: clamp(24px, 3vw, 38px);
}

.hub-book .grid.two {
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
}

.hub-book .card {
  min-height: 172px;
}

.hub-book .card h3 {
  font-size: clamp(24px, 2.1vw, 32px);
  line-height: 1.08;
  text-wrap: balance;
}

.hub-book .card .muted {
  line-height: 1.45;
}

.hub-book .page-left {
  display: flex;
  flex-direction: column;
}

.hub-book .progress-ring {
  width: 118px;
  height: 118px;
  margin: 24px auto 20px;
}

.hub-book .progress-ring span {
  width: 88px;
  height: 88px;
  font-size: 34px;
}

.hub-book .chapter-dots {
  margin-top: auto;
}

.input,
.textarea {
  width: 100%;
  border: 1px solid var(--book-input-border);
  border-radius: var(--radius-lg);
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  color: var(--text);
  padding: 13px 14px;
  outline: none;
}

.textarea {
  min-height: 130px;
  resize: vertical;
}

.input::placeholder,
.textarea::placeholder {
  color: var(--text-muted);
}

.input:focus,
.textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 14px 0;
}

.tab {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text-secondary);
  padding: 9px 12px;
}

.tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-text);
}

.screen-title {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
  margin-bottom: 22px;
}

.screen-title h1 {
  font-family: var(--font-display);
  font-size: clamp(38px, 5vw, 62px);
  font-weight: 400;
  line-height: 1;
}

.list {
  display: grid;
  gap: 10px;
}

.row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: color-mix(in oklab, var(--bg) 54%, transparent);
  color: var(--text-secondary);
  text-align: left;
}

.avatar {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: var(--accent-text);
  font-weight: 800;
}

.status {
  margin-left: auto;
  border-radius: 999px;
  padding: 5px 9px;
  font-size: 12px;
  font-weight: 750;
}

.status.ok {
  background: color-mix(in oklab, var(--success) 15%, transparent);
  color: var(--success);
}

.status.warn {
  background: color-mix(in oklab, var(--warn) 15%, transparent);
  color: var(--warn);
}

.status.bad {
  background: color-mix(in oklab, var(--error) 15%, transparent);
  color: var(--error);
}

.metric {
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 40px;
}

.onboarding-page {
  --home-warm: #f4a259;
  --home-rose: #ff7aae;
  --home-violet: #9b8cff;
  width: min(1180px, calc(100% - 2rem));
  margin-inline: auto;
  padding: clamp(26px, 4vw, 52px) 0 76px;
}

:root[data-theme="light"] .onboarding-page {
  --home-warm: #c96c2c;
  --home-rose: #c44c7f;
  --home-violet: #6554e8;
}

.onboarding-hero {
  position: relative;
  display: grid;
  min-height: clamp(430px, calc(82svh - 116px), 640px);
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  padding: clamp(42px, 7vw, 92px) 0 clamp(42px, 6vw, 78px);
}

.onboarding-hero::before {
  content: "";
  position: absolute;
  inset: 8% -8% 5%;
  z-index: -1;
  border-radius: 999px;
  background:
    radial-gradient(40% 42% at 28% 40%, rgba(13, 110, 253, 0.24), transparent 72%),
    radial-gradient(34% 44% at 78% 36%, rgba(244, 162, 89, 0.14), transparent 74%),
    linear-gradient(180deg, rgba(10, 26, 58, 0.18), transparent 70%);
  filter: blur(8px);
  opacity: 0.92;
}

:root[data-theme="light"] .onboarding-hero::before {
  border: 1px solid rgba(168, 190, 216, 0.34);
  background:
    radial-gradient(44% 42% at 27% 40%, rgba(255, 255, 255, 0.78), transparent 72%),
    radial-gradient(36% 42% at 77% 38%, rgba(255, 243, 222, 0.52), transparent 76%),
    radial-gradient(44% 52% at 50% 70%, rgba(196, 219, 244, 0.34), transparent 74%);
  filter: blur(0);
}

.onboarding-copy {
  max-width: 760px;
}

.onboarding-copy h1 {
  max-width: 9.2ch;
  font-size: clamp(64px, 10vw, 132px);
  line-height: 0.88;
  text-wrap: balance;
}

.onboarding-copy h1::after {
  content: "";
  display: block;
  width: 86px;
  height: 1px;
  margin-top: clamp(20px, 3vw, 32px);
  background: linear-gradient(90deg, var(--accent-hover), transparent);
}

.onboarding-lede {
  max-width: 58ch;
  margin: clamp(20px, 3vw, 30px) 0 0;
  color: color-mix(in oklab, var(--text-secondary) 88%, white 12%);
  font-size: clamp(17px, 1.7vw, 21px);
  line-height: 1.72;
}

:root[data-theme="light"] .onboarding-lede {
  color: #506078;
}

.onboarding-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 32px;
}

.btn-lg {
  min-height: 48px;
  padding-inline: 20px;
  font-size: 15px;
}

.save-note {
  display: inline-flex;
  max-width: 330px;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.35;
}

.onboarding-path,
.onboarding-preview {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--divider);
  border-radius: var(--radius-lg);
  background: var(--divider);
}

.onboarding-path {
  margin-bottom: clamp(26px, 4vw, 42px);
}

.path-card,
.preview-panel {
  min-height: 180px;
  padding: clamp(20px, 3vw, 28px);
  background: color-mix(in oklab, var(--surface) 68%, transparent);
}

.path-card.is-active,
.preview-panel-soft {
  background:
    radial-gradient(340px 220px at 12% 0, var(--accent-soft), transparent 70%),
    color-mix(in oklab, var(--surface) 82%, transparent);
}

.path-number {
  color: var(--accent-hover);
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 58px);
  line-height: 0.9;
}

.path-card h2,
.preview-panel h2 {
  margin-top: 18px;
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1;
  text-wrap: balance;
}

.path-card p,
.preview-panel p {
  max-width: 46ch;
  color: var(--text-secondary);
}

.onboarding-preview {
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  border-radius: calc(var(--radius-lg) + 4px);
}

.split {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 18px;
}

.phone {
  max-width: 390px;
  margin: auto;
  border: 1px solid var(--border);
  border-radius: 34px;
  background: #020914;
  padding: 14px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

.phone-screen {
  min-height: 680px;
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  background: var(--bg);
}

.mobile-bar {
  display: flex;
  justify-content: space-around;
  border-top: 1px solid var(--border);
  background: color-mix(in oklab, var(--bg-alt) 64%, #020914 36%);
  padding: 10px;
}

.mobile-bar span {
  color: var(--text-muted);
  font-size: 11px;
}

.mobile-bar .on {
  color: var(--accent);
}

.chat {
  display: grid;
  gap: 10px;
}

.bubble {
  max-width: 76%;
  padding: 11px 13px;
  border-radius: 16px;
  background: var(--surface);
  color: color-mix(in oklab, var(--text) 86%, var(--accent-hover) 14%);
}

.bubble.me {
  justify-self: end;
  background: var(--accent);
  color: var(--accent-text);
}

.video-stage {
  position: relative;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 34%, var(--accent-soft), transparent 28%),
    #020914;
}

.video-person {
  position: absolute;
  inset: 12%;
  display: grid;
  place-items: center;
  border-radius: 28px;
  background: linear-gradient(180deg, color-mix(in oklab, var(--accent) 48%, #173e7e), color-mix(in oklab, var(--bg) 72%, #081b3f));
  color: var(--text);
  font-size: 72px;
  font-weight: 800;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.45);
}

.call-controls {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 14px;
}

.round {
  width: 46px;
  height: 46px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface);
  color: var(--text);
}

.round.end {
  background: var(--error);
  border-color: var(--error);
  color: white;
}

.billing-plan {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
}

.toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  background: color-mix(in oklab, var(--bg) 86%, transparent);
}

.toggle button {
  border: 0;
  border-radius: 999px;
  padding: 7px 12px;
  background: transparent;
  color: var(--text-secondary);
}

.toggle button.active {
  background: var(--accent);
  color: var(--accent-text);
}

.footer-note {
  margin-top: 28px;
  color: var(--text-muted);
  font-size: 12px;
}

.progress-bar {
  height: 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
  overflow: hidden;
  margin-top: 18px;
}

.progress-bar span {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--success));
  transition: width 0.22s ease;
}

.completion-panel {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: center;
  padding: 18px;
  border: 1px solid var(--accent-line);
  border-radius: 16px;
  background:
    radial-gradient(420px 220px at 16% 10%, var(--accent-soft), transparent 70%),
    color-mix(in oklab, var(--bg) 72%, transparent);
  margin-bottom: 18px;
}

.account-seal {
  width: 82px;
  height: 82px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: conic-gradient(var(--accent), var(--success), var(--accent));
  box-shadow: 0 0 34px var(--accent-soft);
}

.account-seal .spark {
  width: 60px;
  height: 60px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: color-mix(in oklab, var(--bg-alt) 64%, #020914 36%);
  color: var(--text);
  font-size: 24px;
}

.account-form {
  background:
    linear-gradient(180deg, color-mix(in oklab, var(--surface) 98%, transparent), color-mix(in oklab, var(--bg) 92%, transparent));
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 13px;
}

.form-grid label {
  display: grid;
  gap: 7px;
}

.checkbox-row {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 16px 0;
  color: var(--text-secondary);
  line-height: 1.45;
}

.checkbox-row input {
  margin-top: 3px;
  accent-color: var(--accent);
}

.cta-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 22px;
}

.btn:disabled {
  opacity: 0.72;
}

.is-bound .completion-panel {
  border-color: color-mix(in oklab, var(--success) 55%, transparent);
}

.is-bound [data-complete-chapter] {
  background: color-mix(in oklab, var(--success) 18%, transparent);
  border-color: var(--success);
  color: var(--success);
}

@media (max-width: 1366px) {
  .page {
    width: min(1180px, 100%);
  }
}

@media (min-width: 1440px) {
  .page {
    width: min(1240px, 100%);
  }

  .hero {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  }

  .book {
    min-height: 520px;
  }

}

@media (min-width: 1920px) {
  .page {
    width: min(1280px, 100%);
  }

  .title {
    font-size: 82px;
  }

  .screen-title h1 {
    font-size: 66px;
  }
}

@media (max-width: 1024px) {
  .hero,
  .split,
  .onboarding-hero {
    grid-template-columns: 1fr;
  }

  .onboarding-hero {
    min-height: auto;
  }

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

  .book {
    grid-template-columns: 220px 1fr;
  }

  .book::before {
    background:
      linear-gradient(90deg, transparent 217px, rgba(255, 255, 255, 0.08) 219px, rgba(0, 0, 0, 0.35) 224px, transparent 248px),
      var(--book-spine);
  }
}

@media (max-width: 820px) {
  .topbar {
    position: sticky;
    align-items: center;
    flex-direction: row;
    gap: 12px;
    justify-content: flex-start;
    min-height: 64px;
    padding: 10px 14px;
  }

  .screen-title {
    align-items: flex-start;
    flex-direction: column;
  }

  .brand {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-size: 22px;
    z-index: 1;
  }

  .mobile-menu-toggle {
    display: inline-flex;
    position: relative;
    z-index: 2;
  }

  .nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 14px;
    left: 14px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    width: auto;
    margin-left: 0;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: color-mix(in oklab, var(--surface) 94%, var(--bg) 6%);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    overflow: visible;
  }

  .nav-open .nav {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav a {
    display: flex;
    justify-content: center;
    padding: 11px 12px;
  }

  .mobile-bottom-nav {
    position: fixed;
    right: 12px;
    bottom: max(12px, env(safe-area-inset-bottom));
    left: 12px;
    z-index: 22;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    padding: 7px;
    border: 1px solid color-mix(in oklab, var(--border) 84%, var(--accent) 16%);
    border-radius: 20px;
    background: color-mix(in oklab, var(--surface) 88%, transparent);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(22px);
  }

  .mobile-bottom-nav a {
    display: flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 750;
  }

  .mobile-bottom-nav a.active {
    color: var(--accent-text);
    background: var(--accent);
    box-shadow: 0 10px 24px color-mix(in oklab, var(--accent) 25%, transparent);
  }

  body {
    padding-bottom: 86px;
  }
}

@media (max-width: 780px) {
  .hub-stats {
    grid-template-columns: 1fr;
  }

  .hub-intro,
  .hub-book {
    min-height: auto;
  }

  .book {
    grid-template-columns: 1fr;
  }

  .book::before {
    display: none;
  }

  .page-left {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .grid,
  .grid.two,
  .form-grid,
  .completion-panel,
  .onboarding-path,
  .onboarding-preview {
    grid-template-columns: 1fr;
  }

  .screen-title {
    align-items: start;
    flex-direction: column;
  }

  .page {
    padding-top: 28px;
  }

  .hero {
    gap: 18px;
  }

  .account-seal {
    width: 68px;
    height: 68px;
  }

  .account-seal .spark {
    width: 50px;
    height: 50px;
  }

  .onboarding-page {
    width: min(100% - 1.5rem, 680px);
    padding-top: 28px;
  }

  .onboarding-copy h1 {
    max-width: 10ch;
    font-size: clamp(52px, 14vw, 76px);
  }

}

@media (max-width: 600px) {
  .row {
    align-items: flex-start;
  }

  .billing-plan {
    grid-template-columns: 1fr;
  }

  .call-controls {
    justify-content: flex-start;
    overflow: auto;
  }

  .bubble {
    max-width: 90%;
  }

  .onboarding-page {
    width: min(100% - 1rem, 560px);
    padding-bottom: 48px;
  }

  .onboarding-actions,
  .save-note {
    align-items: stretch;
    flex-direction: column;
  }

  .onboarding-actions .btn {
    width: 100%;
  }

}

@media (max-width: 430px) {
  .page {
    padding-inline: 14px;
  }

  .panel,
  .card {
    padding: 15px;
  }

  .title {
    font-size: 48px;
  }

  .book-title {
    font-size: 30px;
  }

  .page-right,
  .page-left {
    padding: 22px;
  }

  .onboarding-copy h1 {
    font-size: 48px;
  }

  .onboarding-lede {
    font-size: 16px;
  }

  .phone {
    padding: 8px;
    border-radius: 24px;
  }

  .phone-screen {
    border-radius: 18px;
  }

  .nav a {
    font-size: 12px;
    padding: 7px 10px;
  }
}

@media (max-width: 390px) {
  .btn,
  .screen-title .btn,
  .cta-row .btn,
  .onboarding-actions .btn {
    width: 100%;
  }

  .tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .tab {
    padding: 9px 8px;
  }

  .rank-item {
    grid-template-columns: auto auto minmax(0, 1fr);
  }

  .rank-item .icon-btn {
    width: 100%;
  }
}

@media (max-width: 360px) {
  .page {
    padding-inline: 10px;
  }

  .topbar {
    padding-inline: 10px;
  }

  .title {
    font-size: 42px;
  }

  .screen-title h1 {
    font-size: 34px;
  }

  .onboarding-copy h1 {
    font-size: 42px;
  }

  .onboarding-page {
    width: min(100% - 20px, 420px);
  }

  .path-card,
  .preview-panel {
    min-height: auto;
  }

  .metric {
    font-size: 34px;
  }

  .chips {
    gap: 6px;
  }

  .chip {
    padding: 7px 10px;
  }
}

@media (max-width: 1024px) {
  .api-reveal {
    grid-template-columns: 1fr;
  }

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

  .sheet-head {
    display: none;
  }
}