:root {
  color-scheme: light;
  --ink: var(--color-ink);
  --muted: var(--color-muted);
  --paper: var(--color-canvas);
  --surface: var(--color-surface);
  --surface-raised: var(--color-surface-raised);
  --line: var(--color-border);
  --lime: var(--color-primary);
  --blue: var(--color-secondary);
  --coral: var(--color-attention);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 14px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

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

html {
  min-width: 320px;
  min-height: 100%;
  background: var(--paper);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px),
    var(--paper);
  background-size: 44px 44px;
}

button {
  font: inherit;
}

button:focus-visible,
input:focus-visible + label,
a:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

.home-link {
  position: fixed;
  z-index: 20;
  top: 18px;
  left: 18px;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink);
  background: var(--surface-raised);
  box-shadow: 0 10px 25px color-mix(in srgb, var(--ink) 10%, transparent);
  text-decoration: none;
  transition: transform 160ms ease, color 160ms ease, border-color 160ms ease;
}

.home-link:hover {
  transform: translateY(-2px);
  border-color: var(--blue);
  color: var(--blue);
}

.home-link svg,
.icon-button svg,
.primary-button svg {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-decoration {
  position: fixed;
  z-index: 0;
  border-radius: 50%;
  pointer-events: none;
  opacity: 0.62;
}

.page-decoration--one {
  top: -190px;
  right: -100px;
  width: 370px;
  height: 370px;
  background: var(--lime);
}

.page-decoration--two {
  bottom: -270px;
  left: -150px;
  width: 500px;
  height: 500px;
  background: var(--color-secondary-soft);
}

.app-shell {
  position: relative;
  z-index: 1;
  width: min(1050px, calc(100% - 32px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 24px 0;
  display: grid;
  place-items: center;
}

.start-screen {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(370px, 420px);
  align-items: center;
  gap: clamp(36px, 7vw, 78px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  grid-template-columns: repeat(2, 9px);
  grid-template-rows: repeat(2, 9px);
  place-content: center;
  gap: 4px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface-raised);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--ink) 8%, transparent);
}

.brand-mark i {
  display: block;
  border-radius: 3px;
  background: var(--ink);
}

.brand-mark i:nth-child(2),
.brand-mark i:nth-child(3) {
  background: var(--coral);
}

.eyebrow {
  margin: 42px 0 13px;
  color: var(--coral);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.18em;
}

.start-copy h1 {
  max-width: 590px;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3.3rem, 6.3vw, 5.5rem);
  font-weight: 500;
  line-height: 0.91;
  letter-spacing: -0.065em;
}

.start-copy h1 em {
  color: var(--coral);
  font-weight: inherit;
}

.start-lead {
  max-width: 540px;
  margin: 23px 0 0;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.65;
}

.preview-cards {
  height: 108px;
  display: flex;
  align-items: end;
  margin-top: 34px;
  padding-left: 10px;
}

.preview-card {
  width: 82px;
  aspect-ratio: 1;
  display: block;
  overflow: hidden;
  border: 5px solid var(--surface-raised);
  border-radius: 18px;
  background: url("assets/card-objects.webp") 0 0 / 400% 400% no-repeat;
  box-shadow: 0 15px 28px color-mix(in srgb, var(--ink) 16%, transparent);
}

.preview-card + .preview-card {
  margin-left: -13px;
}

.preview-card--fox {
  background-position: 0 33.333%;
  transform: rotate(-8deg);
}

.preview-card--scooter {
  background-position: 0 0;
  transform: translateY(-8px) rotate(2deg);
}

.preview-card--berry {
  background-position: 0 66.667%;
  transform: rotate(9deg);
}

.setup-card {
  padding: clamp(23px, 3vw, 31px);
  border: 1px solid color-mix(in srgb, var(--ink) 10%, transparent);
  border-radius: var(--radius-xl);
  background: color-mix(in srgb, var(--surface-raised) 95%, transparent);
  box-shadow: var(--shadow-raised);
  backdrop-filter: blur(10px);
}

.setup-card__header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 17px;
  border-bottom: 1px solid var(--line);
}

.step-number {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  flex: none;
  border-radius: 50%;
  color: var(--ink);
  background: var(--lime);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.2rem;
  font-weight: 700;
}

.setup-label,
.setup-hint {
  margin: 0;
}

.setup-label {
  font-size: 0.94rem;
  font-weight: 850;
}

.setup-hint {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.78rem;
}

.mode-picker {
  display: grid;
  gap: 9px;
  margin: 18px 0;
  padding: 0;
  border: 0;
}

.mode-picker legend {
  margin: 0 0 1px;
  color: var(--muted);
  font-size: 0.67rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.mode-input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.mode-option {
  min-height: 64px;
  display: grid;
  grid-template-columns: 35px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: transparent;
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.mode-option:hover {
  transform: translateY(-2px);
  border-color: var(--blue);
}

.mode-input:checked + .mode-option {
  border-color: color-mix(in srgb, var(--lime) 72%, var(--ink));
  background: var(--color-primary-soft);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--lime) 72%, var(--ink));
}

.mode-option strong,
.mode-option small {
  display: block;
}

.mode-option strong {
  font-size: 0.86rem;
}

.mode-option small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.72rem;
}

.mode-best {
  color: var(--muted);
  font-size: 0.67rem;
  font-weight: 750;
  text-transform: uppercase;
}

.mode-best b {
  min-width: 20px;
  display: inline-block;
  color: var(--ink);
  font-size: 0.83rem;
  text-align: right;
}

.difficulty-bars {
  height: 20px;
  display: flex;
  align-items: end;
  gap: 4px;
}

.difficulty-bars i {
  width: 5px;
  border-radius: 5px;
  background: var(--line);
}

.difficulty-bars i:nth-child(1) { height: 8px; background: var(--blue); }
.difficulty-bars i:nth-child(2) { height: 14px; }
.difficulty-bars i:nth-child(3) { height: 20px; }
.difficulty-bars--medium i:nth-child(2),
.difficulty-bars--hard i { background: var(--blue); }

.primary-button {
  width: 100%;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 8px 10px 8px 21px;
  border: 0;
  border-radius: var(--radius-md);
  color: var(--ink);
  background: var(--lime);
  box-shadow: 0 13px 24px color-mix(in srgb, var(--lime) 29%, transparent);
  cursor: pointer;
  font-weight: 850;
  transition: transform 160ms ease, background 160ms ease;
}

.primary-button:hover {
  transform: translateY(-2px);
  background: var(--color-primary-hover);
}

.primary-button__arrow {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  color: var(--lime);
  background: var(--ink);
}

.reset-best-button,
.dialog-text-button {
  display: block;
  margin: 15px auto 0;
  padding: 4px 8px;
  border: 0;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font-size: 0.69rem;
  font-weight: 750;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 3px;
}

.reset-best-button:hover,
.dialog-text-button:hover {
  color: var(--coral);
  text-decoration-color: currentColor;
}

.setup-message {
  min-height: 17px;
  margin: 3px 0 -9px;
  color: var(--blue);
  font-size: 0.7rem;
  font-weight: 700;
  text-align: center;
}