/* Exercise 1 Min — landing page
   Self-contained: no external fonts or assets. */

/* ---- Tokens ------------------------------------------------------------ */
:root {
  --canvas: #f1f6f1;
  --surface: #ffffff;
  --surface-2: #e9f1ea;
  --ink: #12241b;
  --ink-soft: #4a5d52;
  --line: rgba(18, 36, 27, 0.1);
  --brand: #2e7d5b;
  --brand-deep: #1f5c41;
  --brand-tint: #dcebe1;
  --amber: #e8a24a;
  --amber-deep: #ce7f22;
  --on-amber: #2a1a05;
  --shadow-sm: 0 1px 2px rgba(16, 40, 28, 0.05);
  --shadow: 0 1px 2px rgba(16, 40, 28, 0.04), 0 14px 34px -14px rgba(16, 40, 28, 0.22);
  --radius: 20px;
  --radius-lg: 30px;
  --font-display: ui-rounded, "SF Pro Rounded", "Segoe UI Variable Display",
    system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  --maxw: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #0d1611;
    --surface: #14201a;
    --surface-2: #1b2a22;
    --ink: #e8f1ea;
    --ink-soft: #9db2a6;
    --line: rgba(232, 241, 234, 0.12);
    --brand: #4fa97f;
    --brand-deep: #6fc79c;
    --brand-tint: #1e2e25;
    --amber: #f0b366;
    --amber-deep: #e8a24a;
    --on-amber: #241603;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 18px 44px -18px rgba(0, 0, 0, 0.6);
  }
}

/* ---- Base -------------------------------------------------------------- */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--canvas);
  line-height: 1.6;
  font-size: 1.0625rem;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip; /* safety net; clip (not hidden) keeps the sticky header working */
}

/* Ambient wash: a soft green-to-canvas field behind the hero */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60% 42% at 78% -6%, color-mix(in srgb, var(--brand) 16%, transparent), transparent 70%),
    radial-gradient(50% 40% at 8% 4%, color-mix(in srgb, var(--amber) 9%, transparent), transparent 72%);
  pointer-events: none;
}

h1, h2, h3 { font-family: var(--font-display); font-weight: 800; margin: 0; }
p { margin: 0; }
a { color: inherit; }
img { max-width: 100%; }

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--amber);
  color: var(--on-amber);
  padding: 0.6rem 1rem;
  border-radius: 0 0 12px 0;
  font-weight: 700;
  z-index: 50;
}
.skip:focus { left: 0; }

:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---- Layout ------------------------------------------------------------ */
.wrap { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto; }

.section { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.section.tight { padding-block: clamp(2.75rem, 6vw, 4.5rem); }

.eyebrow {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 0.9rem;
}
.eyebrow.center { text-align: center; }
.section-head {
  text-align: center;
  max-width: 48ch;
  margin-inline: auto;
}
.section-head h2 {
  font-size: clamp(1.7rem, 3.6vw, 2.6rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
}

/* ---- Header ------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: saturate(1.4) blur(12px);
  background: color-mix(in srgb, var(--canvas) 82%, transparent);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.85rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.06rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--ink);
}
.brand-mark {
  width: 32px;
  height: 32px;
  flex: none;
  display: block;
  border-radius: 7px;
  object-fit: contain;
}
.site-nav { display: flex; align-items: center; gap: 1.35rem; }
.site-nav > a {
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 650;
  font-size: 0.95rem;
  color: var(--ink-soft);
  transition: color 0.2s;
}
.site-nav > a:hover { color: var(--ink); }
/* ---- Hero -------------------------------------------------------------- */
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  padding-block: clamp(3rem, 7vw, 6rem);
}
.hero h1 {
  font-size: clamp(2.5rem, 6.2vw, 4.35rem);
  line-height: 1.02;
  letter-spacing: -0.035em;
}
.hero .lede {
  margin-top: 1.25rem;
  font-size: clamp(1.06rem, 1.7vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 34ch;
}
.hero-actions {
  margin-top: 1.9rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem;
}
.tagline {
  margin-top: 1.7rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--brand);
  letter-spacing: -0.01em;
  font-size: 1.02rem;
}

.badge-soon {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background: var(--amber);
  color: var(--on-amber);
  font-weight: 800;
  font-family: var(--font-display);
  padding: 0.72rem 1.2rem;
  border-radius: 999px;
  box-shadow: var(--shadow);
  letter-spacing: -0.005em;
}
.badge-soon::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--on-amber);
  opacity: 0.85;
}
.badge-soon.big { font-size: 1.08rem; padding: 0.9rem 1.5rem; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-weight: 700;
  font-family: var(--font-display);
  color: var(--ink);
  padding: 0.72rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}
.btn-ghost:hover { border-color: var(--brand); background: var(--surface); transform: translateY(-1px); }
.btn-ghost::after { content: "↓"; opacity: 0.55; }

/* ---- The minute ring (signature) -------------------------------------- */
.hero-ring { display: flex; justify-content: center; }
.ring {
  position: relative;
  width: min(76vw, 360px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
}
.ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring-track { fill: none; stroke: var(--brand-tint); stroke-width: 10; }
.ring-progress {
  fill: none;
  stroke: var(--amber);
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 653;
  stroke-dashoffset: 163; /* ~75% drawn */
}
.ring-glow {
  fill: none;
  stroke: color-mix(in srgb, var(--brand) 30%, transparent);
  stroke-width: 1.5;
}
.ring-label {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  gap: 0;
}
.ring-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.5rem, 12vw, 5.5rem);
  line-height: 0.9;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}
.ring-unit {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-size: 0.9rem;
  color: var(--ink-soft);
  padding-left: 0.28em;
}

@media (prefers-reduced-motion: no-preference) {
  .ring { animation: breathe 5.5s ease-in-out infinite; }
  html.js .ring-progress {
    stroke-dashoffset: 653;
    animation: draw 1.6s cubic-bezier(0.22, 0.7, 0.2, 1) forwards 0.25s;
  }
  @keyframes breathe {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.028); }
  }
  @keyframes draw { to { stroke-dashoffset: 163; } }
}

/* ---- Promise statement ------------------------------------------------- */
.promise { text-align: center; }
.statement {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 4.6vw, 3.1rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  max-width: 18ch;
  margin-inline: auto;
}
.statement em { font-style: normal; color: var(--brand); }
.statement-sub {
  margin: 1.4rem auto 0;
  max-width: 52ch;
  color: var(--ink-soft);
  font-size: 1.12rem;
}

/* ---- How it works (numbered sequence) --------------------------------- */
.steps-grid {
  list-style: none;
  margin: 2.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
  counter-reset: step;
}
.step {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.7rem 1.5rem;
  box-shadow: var(--shadow-sm);
}
.step-num {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 2px solid var(--brand);
  color: var(--brand);
  font-family: var(--font-display);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  margin-bottom: 1rem;
}
.step h3 { font-size: 1.24rem; letter-spacing: -0.01em; }
.step p { margin-top: 0.55rem; color: var(--ink-soft); font-size: 1rem; }

/* ---- Features ---------------------------------------------------------- */
.features-grid {
  margin-top: 2.5rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
}
.feature {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.6rem 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.feature:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.feature-mark {
  width: 34px;
  height: 34px;
  display: block;
  margin-bottom: 0.95rem;
  color: var(--brand);
}
.feature h3 { font-size: 1.14rem; letter-spacing: -0.01em; }
.feature p { margin-top: 0.5rem; color: var(--ink-soft); font-size: 0.98rem; }

/* ---- The exercises (workout cards) ------------------------------------ */
.exercises-head { text-align: center; max-width: 44ch; margin-inline: auto; }
.exercises-head h2 { font-size: clamp(1.7rem, 3.6vw, 2.6rem); letter-spacing: -0.025em; }
.exercises-head .muted { margin-top: 0.7rem; color: var(--ink-soft); }
.exercises-grid {
  list-style: none;
  margin: 2.4rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
}
.exercise-pill {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.85rem 1rem;
  box-shadow: var(--shadow-sm);
}
.exercise-badge {
  flex: none;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: grid;
  place-content: center;
  background: var(--brand-tint);
  color: var(--brand-deep);
  font-family: var(--font-display);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  border: 1.5px solid color-mix(in srgb, var(--brand) 35%, transparent);
}
.exercise-badge small { display: block; font-size: 0.5rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; opacity: 0.75; }
.exercise-name { font-family: var(--font-display); font-weight: 650; font-size: 0.98rem; letter-spacing: -0.01em; min-width: 0; overflow-wrap: break-word; }

/* ---- FAQ (native accordion) ------------------------------------------- */
.faq-wrap { max-width: 760px; }
.faq-head { text-align: center; max-width: 44ch; margin-inline: auto; }
.faq-head h2 { font-size: clamp(1.7rem, 3.6vw, 2.6rem); letter-spacing: -0.025em; }
.faq-head .muted { margin-top: 0.7rem; color: var(--ink-soft); }
.faq { margin-top: 2.25rem; display: grid; gap: 0.7rem; }
.faq details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 1.1rem 1.35rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  flex: none;
  font-weight: 700;
  color: var(--brand);
  font-size: 1.4rem;
  line-height: 1;
  transition: transform 0.2s;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 1.35rem 1.2rem; color: var(--ink-soft); }

/* ---- Closing band ------------------------------------------------------ */
.closing {
  text-align: center;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--brand) 8%, transparent), transparent);
}
.closing h2 { font-size: clamp(1.9rem, 4.4vw, 3rem); letter-spacing: -0.03em; }
.chips {
  list-style: none;
  padding: 0;
  margin: 1.6rem auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  max-width: 40rem;
}
.chips li {
  font-family: var(--font-display);
  font-weight: 650;
  font-size: 0.95rem;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--ink);
}
.closing .badge-soon { margin-top: 0.6rem; }

/* ---- Footer ------------------------------------------------------------ */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 2.5rem;
  background: var(--surface);
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.foot-brand { display: inline-flex; align-items: center; gap: 0.55rem; font-family: var(--font-display); font-weight: 800; }
.safety { flex-basis: 100%; order: 3; color: var(--ink-soft); font-size: 0.88rem; max-width: 60ch; }
.foot-links { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--ink-soft); font-size: 0.92rem; flex-wrap: wrap; }
.foot-links a { color: var(--brand); text-decoration: none; font-weight: 650; }
.foot-links a:hover { text-decoration: underline; }

/* ---- Reveal on scroll (progressive enhancement) ----------------------- */
@media (prefers-reduced-motion: no-preference) {
  html.js .reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
  }
  html.js .reveal.is-visible { opacity: 1; transform: none; }
  html.js .steps-grid .step:nth-child(2).is-visible,
  html.js .features-grid .feature:nth-child(2).is-visible { transition-delay: 0.08s; }
  html.js .steps-grid .step:nth-child(3).is-visible,
  html.js .features-grid .feature:nth-child(3).is-visible { transition-delay: 0.16s; }
}

/* ---- Responsive -------------------------------------------------------- */
@media (max-width: 920px) {
  .features-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .exercises-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .site-nav > a { display: none; }
}
@media (max-width: 760px) {
  .hero .wrap { grid-template-columns: 1fr; text-align: center; }
  .hero .lede { margin-inline: auto; }
  .hero-actions { justify-content: center; }
  .hero-ring { order: -1; }
  .ring { width: min(64vw, 280px); }
  .steps-grid { grid-template-columns: 1fr; }
}
@media (max-width: 540px) {
  .exercises-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .features-grid { grid-template-columns: minmax(0, 1fr); }
  .exercise-pill { padding: 0.7rem 0.8rem; gap: 0.7rem; }
}