/* ===== Design tokens ===== */
:root,
[data-theme='light'] {
  /* Surfaces — warm khaki paper */
  --color-bg: #f3efe2;
  --color-surface: #fbf8ef;
  --color-surface-2: #ffffff;
  --color-surface-offset: #eae3cd;
  --color-border: #d9cfae;
  --color-divider: #e2d9bd;

  /* Text — deep olive-charcoal */
  --color-text: #2b2a1f;
  --color-text-muted: #6c6852;
  --color-text-faint: #a4a081;
  --color-text-inverse: #f7f3e4;

  /* Primary accent — drill olive */
  --color-primary: #55672e;
  --color-primary-hover: #445323;
  --color-primary-active: #37431c;
  --color-primary-highlight: #dfe3c9;

  /* Rank gold — success / highlight */
  --color-gold: #ad7f22;
  --color-gold-hover: #8f6a1c;
  --color-gold-highlight: #ecdfb4;

  /* Error / incorrect — muted brick */
  --color-error: #9c3b2c;
  --color-error-hover: #7e2f23;
  --color-error-highlight: #ecd4cc;

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px oklch(0.25 0.02 100 / 0.08);
  --shadow-md: 0 6px 16px oklch(0.25 0.02 100 / 0.1);
  --shadow-lg: 0 16px 36px oklch(0.25 0.02 100 / 0.14);

  --transition-interactive: 160ms cubic-bezier(0.16, 1, 0.3, 1);

  --font-display: 'Cabinet Grotesk', 'Georgia', serif;
  --font-body: 'Satoshi', 'Helvetica Neue', sans-serif;

  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
}

[data-theme='dark'] {
  --color-bg: #1a1912;
  --color-surface: #211f16;
  --color-surface-2: #26241a;
  --color-surface-offset: #2b2919;
  --color-border: #40402a;
  --color-divider: #35341f;

  --color-text: #e9e4d0;
  --color-text-muted: #a19c80;
  --color-text-faint: #6d6952;
  --color-text-inverse: #201f15;

  --color-primary: #9db06a;
  --color-primary-hover: #b1c284;
  --color-primary-active: #c4d29c;
  --color-primary-highlight: #33392a;

  --color-gold: #d9a83e;
  --color-gold-hover: #e3ba5e;
  --color-gold-highlight: #453922;

  --color-error: #d97e68;
  --color-error-hover: #e29682;
  --color-error-highlight: #4a2f28;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 6px 16px oklch(0 0 0 / 0.35);
  --shadow-lg: 0 16px 36px oklch(0 0 0 / 0.45);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #1a1912;
    --color-surface: #211f16;
    --color-surface-2: #26241a;
    --color-surface-offset: #2b2919;
    --color-border: #40402a;
    --color-divider: #35341f;
    --color-text: #e9e4d0;
    --color-text-muted: #a19c80;
    --color-text-faint: #6d6952;
    --color-text-inverse: #201f15;
    --color-primary: #9db06a;
    --color-primary-hover: #b1c284;
    --color-primary-active: #c4d29c;
    --color-primary-highlight: #33392a;
    --color-gold: #d9a83e;
    --color-gold-hover: #e3ba5e;
    --color-gold-highlight: #453922;
    --color-error: #d97e68;
    --color-error-hover: #e29682;
    --color-error-highlight: #4a2f28;
  }
}

/* ===== Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-interactive), color var(--transition-interactive);
}

img, svg { display: block; max-width: 100%; }

button, input { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }

h1, h2, h3 { text-wrap: balance; line-height: 1.15; font-family: var(--font-display); }
p { text-wrap: pretty; }

::selection { background: color-mix(in oklab, var(--color-primary) 30%, transparent); }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

a, button, [role='button'], input {
  transition: color var(--transition-interactive), background var(--transition-interactive),
    border-color var(--transition-interactive), box-shadow var(--transition-interactive), transform var(--transition-interactive);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
}
.skip-link:focus {
  left: var(--space-4);
  top: var(--space-4);
  z-index: 100;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
}

/* ===== Header ===== */
.site-header {
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface);
}
.header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-primary);
}
.brand-mark { color: var(--color-primary); flex-shrink: 0; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text);
}
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}
.theme-toggle:hover { background: var(--color-surface-offset); color: var(--color-text); }

/* ===== Layout ===== */
main {
  max-width: 960px;
  margin: 0 auto;
  padding: var(--space-10) var(--space-6) var(--space-20);
}

.screen[hidden] { display: none; }

/* ===== Home screen ===== */
.home-intro {
  max-width: 640px;
  margin-bottom: var(--space-12);
}
.eyebrow {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-3);
}
.home-title {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
}
.home-sub {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  max-width: 56ch;
}

.divisions {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}
.division-head { margin-bottom: var(--space-4); }
.division-head h2 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-1);
}
.division-head p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.squad-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}
@media (max-width: 720px) {
  .squad-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .squad-grid { grid-template-columns: 1fr; }
}

.squad-card {
  text-align: left;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-height: 112px;
  justify-content: space-between;
}
.squad-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.squad-card-title {
  font-weight: 600;
  font-size: var(--text-base);
}
.squad-card-count {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ===== Quiz screen ===== */
.quiz-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}
.btn-link {
  color: var(--color-primary);
  font-weight: 600;
  font-size: var(--text-sm);
  padding: var(--space-2) 0;
}
.btn-link:hover { color: var(--color-primary-hover); text-decoration: underline; }
.quiz-squad-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  order: 3;
  width: 100%;
  text-align: center;
}
.quiz-score {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.quiz-score strong { color: var(--color-gold); }

@media (min-width: 640px) {
  .quiz-squad-name { order: 0; width: auto; }
}

.progress-track {
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-surface-offset);
  overflow: hidden;
  margin-bottom: var(--space-2);
}
.progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 240ms cubic-bezier(0.16, 1, 0.3, 1);
  width: 0%;
}
.progress-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-bottom: var(--space-8);
}

.question-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
}
.question-text {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-6);
  font-family: var(--font-body);
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
@media (max-width: 560px) {
  .options-grid { grid-template-columns: 1fr; }
}

.option-btn {
  text-align: left;
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  font-size: var(--text-sm);
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.option-btn .opt-letter {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text-muted);
}
.option-btn:hover:not(:disabled) {
  border-color: var(--color-primary);
  background: var(--color-primary-highlight);
}
.option-btn:disabled { cursor: default; }

.option-btn.is-correct {
  border-color: var(--color-primary);
  background: var(--color-primary-highlight);
}
.option-btn.is-correct .opt-letter {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}
.option-btn.is-wrong {
  border-color: var(--color-error);
  background: var(--color-error-highlight);
}
.option-btn.is-wrong .opt-letter {
  background: var(--color-error);
  color: var(--color-text-inverse);
  border-color: var(--color-error);
}

.answer-feedback {
  margin-top: var(--space-5);
  font-size: var(--text-sm);
  font-weight: 600;
}
.answer-feedback.correct { color: var(--color-primary); }
.answer-feedback.wrong { color: var(--color-error); }

.quiz-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: var(--space-6);
}

.btn {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  min-height: 44px;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-secondary {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}
.btn-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ===== Results screen ===== */
.results-card {
  max-width: 480px;
  margin: var(--space-10) auto 0;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-10) var(--space-8);
}
.results-rank {
  font-size: var(--text-xl);
  color: var(--color-gold);
  margin-bottom: var(--space-3);
}
.results-score {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}
.results-score strong { color: var(--color-text); font-size: var(--text-lg); }
.results-message {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin-bottom: var(--space-8);
}
.results-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding: var(--space-6);
}
.site-footer p {
  max-width: 960px;
  margin: 0 auto;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
}
.site-footer a { color: var(--color-text-muted); text-decoration: underline; }