/* ============ 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; -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility; scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
}
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);
}
img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"], ol[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.15; font-family: var(--font-display); }
p, li, figcaption { text-wrap: pretty; }
::selection { background: color-mix(in oklab, var(--color-primary) 30%, transparent); color: var(--color-text); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }
button { cursor: pointer; background: none; border: none; }
table { border-collapse: collapse; width: 100%; }
a, button, [role="button"], input, textarea, select {
  transition: color var(--transition-interactive), background var(--transition-interactive),
    border-color var(--transition-interactive), box-shadow var(--transition-interactive), transform var(--transition-interactive);
}
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

/* ============ TOKENS ============ */
:root, [data-theme="light"] {
  --color-bg: #faf7f4;
  --color-surface: #ffffff;
  --color-surface-2: #fffdfb;
  --color-surface-offset: #f2ede7;
  --color-border: #e6ded5;
  --color-divider: #ece5dc;

  --color-text: #201a15;
  --color-text-muted: #766b60;
  --color-text-faint: #b3a89c;
  --color-text-inverse: #fdfaf7;

  --color-primary: #e04e1a;
  --color-primary-hover: #b93e12;
  --color-primary-active: #96330f;
  --color-primary-highlight: #fbe0d1;

  --color-success: #3f7d3a;
  --color-success-highlight: #dcece0;

  --shadow-sm: 0 1px 2px oklch(0.2 0.02 40 / 0.06);
  --shadow-md: 0 6px 16px oklch(0.2 0.02 40 / 0.10);
  --shadow-lg: 0 16px 40px oklch(0.2 0.02 40 / 0.16);

  --radius-sm: 0.375rem; --radius-md: 0.625rem; --radius-lg: 1rem; --radius-xl: 1.5rem; --radius-full: 9999px;
  --transition-interactive: 160ms cubic-bezier(0.16, 1, 0.3, 1);
  --content-narrow: 640px; --content-default: 980px; --content-wide: 1220px;

  --font-display: 'Cabinet Grotesk', 'Arial Black', sans-serif;
  --font-body: 'Satoshi', 'Helvetica Neue', sans-serif;
}

[data-theme="dark"] {
  --color-bg: #16130f;
  --color-surface: #1d1912;
  --color-surface-2: #221d15;
  --color-surface-offset: #262019;
  --color-border: #362e23;
  --color-divider: #2b241b;

  --color-text: #f2ece3;
  --color-text-muted: #a89a89;
  --color-text-faint: #6f6355;
  --color-text-inverse: #1d1912;

  --color-primary: #ff7a3d;
  --color-primary-hover: #ff9563;
  --color-primary-active: #ffab84;
  --color-primary-highlight: #3a2418;

  --color-success: #7bc077;
  --color-success-highlight: #26331f;

  --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 40px oklch(0 0 0 / 0.5);
}

:root {
  --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, 3.25rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.5rem);

  --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; --space-32: 8rem;
}

/* ============ LAYOUT ============ */
.wrap { max-width: var(--content-wide); margin-inline: auto; padding-inline: var(--space-6); }
.wrap--narrow { max-width: var(--content-narrow); }
.wrap--default { max-width: var(--content-default); }
main { display: block; }
section { padding-block: clamp(var(--space-12), 6vw, var(--space-20)); }

/* ============ HEADER ============ */
.header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}
.header__inner { display: flex; align-items: center; justify-content: space-between; padding-block: var(--space-4); gap: var(--space-4); }
.brand { display: flex; align-items: center; gap: var(--space-2); font-family: var(--font-display); font-weight: 700; font-size: var(--text-lg); color: var(--color-text); text-decoration: none; }
.brand svg { color: var(--color-primary); }
.nav { display: flex; align-items: center; gap: var(--space-6); }
.nav__links { display: flex; gap: var(--space-6); list-style: none; }
.nav__links a { color: var(--color-text-muted); text-decoration: none; font-size: var(--text-sm); font-weight: 500; }
.nav__links a:hover, .nav__links a[aria-current="page"] { color: var(--color-primary); }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.25rem; height: 2.25rem; border-radius: var(--radius-full);
  color: var(--color-text); border: 1px solid var(--color-border);
}
.icon-btn:hover { background: var(--color-surface-offset); }
.nav-toggle { display: none; }
@media (max-width: 720px) {
  .nav__links { position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; background: var(--color-surface); border-bottom: 1px solid var(--color-divider); padding: var(--space-4) var(--space-6); gap: var(--space-3); display: none; }
  .nav[data-nav].is-open .nav__links { display: flex; }
  .nav-toggle { display: inline-flex; }
}

/* ============ HERO ============ */
.hero { padding-block: clamp(var(--space-12), 8vw, var(--space-24)) var(--space-12); }
.hero__eyebrow { display: inline-flex; align-items: center; gap: var(--space-2); font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--color-primary); background: var(--color-primary-highlight); padding: var(--space-1) var(--space-3); border-radius: var(--radius-full); margin-bottom: var(--space-5); }
.hero__title { font-size: var(--text-3xl); font-weight: 700; max-width: 16ch; }
.hero__title em { color: var(--color-primary); font-style: normal; }
.hero__subtitle { font-size: var(--text-lg); color: var(--color-text-muted); max-width: 46ch; margin-top: var(--space-5); font-family: var(--font-body); font-weight: 400; }

/* ============ GENERATOR CARD ============ */
.generator { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: clamp(var(--space-6), 4vw, var(--space-10)); box-shadow: var(--shadow-md); }
.generator__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); margin-bottom: var(--space-6); }
@media (max-width: 860px) { .generator__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .generator__grid { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.field label { font-size: var(--text-xs); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-text-muted); }
.field select, .field input[type="range"] { width: 100%; }
.select-wrap { position: relative; }
.select-wrap::after { content: ""; position: absolute; right: var(--space-4); top: 50%; width: 8px; height: 8px; border-right: 2px solid var(--color-text-muted); border-bottom: 2px solid var(--color-text-muted); transform: translateY(-70%) rotate(45deg); pointer-events: none; }
.field select {
  appearance: none; background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-8) var(--space-3) var(--space-3); font-size: var(--text-sm); color: var(--color-text);
}
.field select:hover { border-color: var(--color-primary); }
.minutes-value { font-family: var(--font-display); font-size: var(--text-lg); color: var(--color-primary); }
input[type="range"] { -webkit-appearance: none; height: 6px; border-radius: var(--radius-full); background: var(--color-surface-offset); }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 20px; height: 20px; border-radius: 50%; background: var(--color-primary); border: 3px solid var(--color-surface); box-shadow: var(--shadow-sm); cursor: pointer; }
input[type="range"]::-moz-range-thumb { width: 20px; height: 20px; border-radius: 50%; background: var(--color-primary); border: 3px solid var(--color-surface); cursor: pointer; }

.generator__actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-4); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); font-size: var(--text-sm); font-weight: 600; padding: var(--space-3) var(--space-6); border-radius: var(--radius-full); text-decoration: none; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-hover); transform: translateY(-1px); }
.btn-secondary { background: var(--color-surface-offset); color: var(--color-text); border: 1px solid var(--color-border); }
.btn-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }
.count-label { font-size: var(--text-xs); color: var(--color-text-faint); margin-left: auto; }

/* ============ RESULTS ============ */
.results-panel { margin-top: var(--space-8); }
.empty-state { text-align: center; padding: var(--space-12) var(--space-6); color: var(--color-text-muted); border: 1px dashed var(--color-border); border-radius: var(--radius-lg); }
.workout-tags { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-bottom: var(--space-6); }
.tag { font-size: var(--text-xs); font-weight: 600; padding: var(--space-1) var(--space-3); border-radius: var(--radius-full); background: var(--color-primary-highlight); color: var(--color-primary-hover); }
[data-theme="dark"] .tag { color: var(--color-primary); }
.workout-block { margin-bottom: var(--space-6); }
.workout-block__title { font-size: var(--text-lg); font-weight: 700; margin-bottom: var(--space-3); }
.workout-list { display: flex; flex-direction: column; gap: var(--space-2); }
.workout-list li { font-size: var(--text-sm); color: var(--color-text-muted); padding-left: var(--space-5); position: relative; }
.workout-list li::before { content: "\2022"; position: absolute; left: 0; color: var(--color-primary); }
.move-list { display: flex; flex-direction: column; gap: var(--space-2); }
.move { display: flex; align-items: center; gap: var(--space-4); padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); background: var(--color-surface-2); border: 1px solid var(--color-divider); }
.move__num { font-family: var(--font-display); font-size: var(--text-sm); color: var(--color-primary); width: 1.5rem; flex-shrink: 0; }
.move__name { flex: 1; font-weight: 500; font-size: var(--text-sm); }
.move__value { font-size: var(--text-sm); font-weight: 700; color: var(--color-text); white-space: nowrap; }

/* ============ CONTENT SECTIONS ============ */
.section-title { font-size: var(--text-xl); font-weight: 700; margin-bottom: var(--space-4); }
.section-lead { color: var(--color-text-muted); max-width: 60ch; margin-bottom: var(--space-8); font-size: var(--text-base); }
.prose { max-width: 68ch; }
.prose h2 { font-size: var(--text-lg); margin-top: var(--space-10); margin-bottom: var(--space-3); }
.prose p { margin-bottom: var(--space-4); color: var(--color-text-muted); }
.prose ul { margin: var(--space-4) 0 var(--space-4) var(--space-5); color: var(--color-text-muted); }
.prose li { margin-bottom: var(--space-2); list-style: disc; }
.prose a { color: var(--color-primary); text-decoration: underline; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
@media (max-width: 860px) { .grid-3 { grid-template-columns: 1fr; } }
.info-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-6); }
.info-card__icon { width: 2.5rem; height: 2.5rem; border-radius: var(--radius-md); background: var(--color-primary-highlight); color: var(--color-primary); display: flex; align-items: center; justify-content: center; margin-bottom: var(--space-4); }
.info-card h3 { font-size: var(--text-base); font-weight: 700; margin-bottom: var(--space-2); }
.info-card p { font-size: var(--text-sm); color: var(--color-text-muted); }

.tool-links { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-4); }
.tool-links a { font-size: var(--text-sm); font-weight: 600; color: var(--color-primary); text-decoration: none; padding: var(--space-2) var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-full); }
.tool-links a:hover { border-color: var(--color-primary); background: var(--color-primary-highlight); }

.move-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); }
@media (max-width: 860px) { .move-grid { grid-template-columns: repeat(2, 1fr); } }
.move-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-5) var(--space-4); text-align: center; transition: transform var(--transition-interactive), box-shadow var(--transition-interactive); }
.move-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.move-card__figure { width: 6.5rem; height: 6.5rem; margin: 0 auto var(--space-4); border-radius: var(--radius-full); background: var(--color-primary-highlight); display: flex; align-items: center; justify-content: center; }
.move-card__figure img { width: 68%; height: 68%; object-fit: contain; }
.move-card h3 { font-size: var(--text-sm); font-weight: 700; margin-bottom: var(--space-1); }
.move-card p { font-size: var(--text-xs); color: var(--color-text-muted); }
.move-grid--compact { grid-template-columns: repeat(2, 1fr); max-width: 420px; margin: var(--space-2) auto 0; }

.faq { border-top: 1px solid var(--color-divider); }
.faq-item { border-bottom: 1px solid var(--color-divider); padding-block: var(--space-5); }
.faq-item summary { cursor: pointer; font-weight: 600; font-size: var(--text-base); list-style: none; display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: var(--text-lg); color: var(--color-primary); flex-shrink: 0; }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item p { margin-top: var(--space-3); color: var(--color-text-muted); font-size: var(--text-sm); }

/* ============ FOOTER ============ */
.footer { border-top: 1px solid var(--color-divider); padding-block: var(--space-12); margin-top: var(--space-12); }
.footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-8); }
.footer__brand p { color: var(--color-text-muted); font-size: var(--text-sm); max-width: 32ch; margin-top: var(--space-3); }
.footer__links { display: flex; gap: var(--space-10); flex-wrap: wrap; }
.footer__col h4 { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-faint); margin-bottom: var(--space-3); }
.footer__col ul { display: flex; flex-direction: column; gap: var(--space-2); }
.footer__col a { color: var(--color-text-muted); text-decoration: none; font-size: var(--text-sm); }
.footer__col a:hover { color: var(--color-primary); }
.footer__bottom { margin-top: var(--space-10); padding-top: var(--space-6); border-top: 1px solid var(--color-divider); font-size: var(--text-xs); color: var(--color-text-faint); }

/* Page hero (non-home pages) */
.page-hero { padding-block: clamp(var(--space-10), 6vw, var(--space-16)) var(--space-8); }
.page-hero__title { font-size: var(--text-2xl); font-weight: 700; }
.page-hero__subtitle { color: var(--color-text-muted); margin-top: var(--space-4); max-width: 56ch; font-size: var(--text-base); }