/* Muscle Upgrade — Vanilla CSS (no deps) */

/* --------- Tokens (generated from tokens.json) --------- */
:root{
  --bg: #FCFDFF;
  --surface: #FFFFFF;
  --text: #0F172A;
  --muted: #475569;
  --border: #CBD5E1;
  --accent: #0F766E;
  --accent2: #1D4ED8;
  --focus: #111827;

  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 26px;

  --xs: 8px;
  --sm: 12px;
  --md: 16px;
  --lg: 24px;
  --xl: 40px;

  --fast: 160ms;
  --med: 240ms;
  --slow: 420ms;

  --shadow: 0 18px 60px rgba(2,6,23,.10);
  --shadow2: 0 10px 30px rgba(2,6,23,.12);
  --progress: 0%;
}

html[data-theme="dark"]{
  --bg: #0B1014;
  --surface: #0F172A;
  --text: #F1F5F9;
  --muted: #A7B0C0;
  --border: #2A3648;
  --accent: #34D399;
  --accent2: #60A5FA;
  --focus: #F8FAFC;
  --shadow: 0 26px 80px rgba(0,0,0,.38);
  --shadow2: 0 16px 50px rgba(0,0,0,.35);
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
  line-height: 1.45;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(900px 480px at 20% 10%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 70%),
    radial-gradient(860px 520px at 80% 18%, color-mix(in srgb, var(--accent2) 14%, transparent), transparent 72%);
  opacity:.8;
  filter: saturate(1.05);
}

@supports not (color-mix(in srgb, #000 10%, transparent)){
  body::before{
    background:
      radial-gradient(900px 480px at 20% 10%, rgba(15,118,110,.10), transparent 70%),
      radial-gradient(860px 520px at 80% 18%, rgba(29,78,216,.10), transparent 72%);
  }
}

/* --------- A11y core --------- */
.skip-link{
  position:absolute;
  left: 12px;
  top: 12px;
  padding: 10px 12px;
  background: var(--surface);
  border: 2px solid var(--focus);
  border-radius: var(--radius-sm);
  color: var(--text);
  text-decoration:none;
  transform: translateY(-180%);
  transition: transform var(--fast) ease;
  z-index: 9999;
}
.skip-link:focus{ transform: translateY(0); }
:focus-visible{
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

/* --------- Layout --------- */
.nav-shell{
  position: sticky;
  top:0;
  z-index: 1000;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: blur(10px);
}
@supports not (backdrop-filter: blur(10px)){
  .nav-shell{ background: var(--bg); }
}
.nav-inner{
  max-width: 1160px;
  margin: 0 auto;
  padding: 10px 16px;
  display:flex;
  align-items:center;
  gap: 14px;
}
.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  min-width: 170px;
}
.brand-mark{ height: 18px; width:auto; opacity:.9; }
.brand-text{
  font-weight: 800;
  letter-spacing: .02em;
  font-size: 14px;
  text-transform: uppercase;
}
.nav{
  display:flex;
  gap: 12px;
  margin-inline:auto;
}
.nav-link{
  text-decoration:none;
  color: var(--text);
  font-weight: 700;
  padding: 10px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
}
.nav-link:hover{
  border-color: var(--border);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap: 10px;
}
.icon-btn{
  appearance:none;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  color: var(--text);
  border-radius: 999px;
  padding: 8px 10px;
  display:flex;
  align-items:center;
  gap: 8px;
  cursor:pointer;
  min-height: 40px;
}
.icon-btn:hover{ border-color: color-mix(in srgb, var(--border) 70%, var(--text)); }
.icon-btn-label{ font-weight: 800; letter-spacing:.03em; font-size: 12px; }
.chev{ opacity:.75; font-size: 12px; }

.lang{ position: relative; }
.lang-list{
  list-style:none;
  padding: 8px;
  margin: 8px 0 0 0;
  position:absolute;
  right:0;
  top:100%;
  min-width: 220px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow2);
}
.lang-list [role="option"]{
  padding: 10px 10px;
  border-radius: 12px;
  cursor:pointer;
  color: var(--text);
  font-weight: 700;
}
.lang-list [role="option"][aria-selected="true"],
.lang-list [role="option"]:hover{
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 32%, transparent);
}
.lang-list [role="option"]:focus-visible{
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

/* Progress bar */
.progress{
  height: 4px;
  background: color-mix(in srgb, var(--border) 60%, transparent);
}
.progress-bar{
  height: 100%;
  width: var(--progress);
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transform-origin: left center;
}

/* --------- Hero --------- */
.hero{
  position: relative;
  overflow:hidden;
}
.hero-bg{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit: cover;
  filter: saturate(1.1) contrast(1.05);
  transform: scale(1.03);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(180deg,
      color-mix(in srgb, var(--bg) 12%, transparent) 0%,
      color-mix(in srgb, var(--bg) 70%, transparent) 56%,
      var(--bg) 100%);
}
.hero::after{
  content:"";
  position:absolute;
  inset:-40px;
  background:
    radial-gradient(520px 340px at 20% 30%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 60%),
    radial-gradient(520px 340px at 80% 20%, color-mix(in srgb, var(--accent2) 22%, transparent), transparent 60%);
  opacity:.9;
  mix-blend-mode: overlay;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  max-width: 1160px;
  margin: 0 auto;
  padding: 64px 16px 48px;
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 28px;
  align-items:center;
}
.kicker{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: color-mix(in srgb, var(--surface) 74%, transparent);
  font-weight: 800;
  letter-spacing:.03em;
  text-transform: uppercase;
  font-size: 12px;
}
.hero-copy h1{
  margin: 14px 0 10px;
  font-weight: 950;
  letter-spacing: -0.03em;
  line-height: 1.03;
  font-size: clamp(36px, 4.2vw, 56px);
}
.sub{
  margin: 0 0 14px;
  font-size: 18px;
  max-width: 54ch;
  color: color-mix(in srgb, var(--text) 84%, var(--muted));
}
.hero-points{
  margin: 0;
  padding-left: 18px;
  display:grid;
  gap: 8px;
  color: color-mix(in srgb, var(--text) 88%, var(--muted));
  font-weight: 650;
}
.hero-cta{
  margin-top: 18px;
  display:flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  border-radius: 999px;
  padding: 12px 16px;
  min-height: 46px;
  font-weight: 900;
  letter-spacing:.01em;
  text-decoration:none;
  border: 1px solid transparent;
  transition: transform var(--fast) ease, filter var(--fast) ease, background var(--fast) ease, border-color var(--fast) ease;
}
.btn:active{ transform: translateY(1px); }
.btn-primary{
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  color: #071018;
  border-color: color-mix(in srgb, var(--accent2) 35%, transparent);
  box-shadow: var(--shadow2);
}
html[data-theme="dark"] .btn-primary{ color: #071018; }
.btn-primary:hover{ filter: brightness(1.05); }
.btn-ghost{
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover{ border-color: color-mix(in srgb, var(--border) 70%, var(--text)); }

.hero-media{
  display:grid;
  gap: 10px;
  justify-items: end;
}
.packshot-frame{
  width: min(420px, 100%);
  padding: 18px 16px;
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  box-shadow: var(--shadow);
  position:relative;
  overflow:hidden;
}
.packshot-frame::before{
  content:"";
  position:absolute;
  inset:-40px;
  background: radial-gradient(240px 180px at 30% 10%, rgba(255,255,255,.35), transparent 60%);
  opacity: .5;
}
.packshot-hero,
.packshot-single{
  display:block;
  margin-inline:auto;
  width: 100%;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 24px 34px rgba(0,0,0,.22));
}
.packshot-hero{ opacity: .95; }
.packshot-single{
  width: 86%;
  margin-top: -12px;
}
.hero-note{
  margin: 0;
  color: color-mix(in srgb, var(--text) 70%, var(--muted));
  font-size: 12px;
  font-weight: 700;
}

/* --------- Main content --------- */
main{
  max-width: 1160px;
  margin: 0 auto;
  padding: 34px 16px 72px;
}
section{
  margin-top: 34px;
  padding: 22px 0;
}
section > h2{
  margin: 0 0 18px;
  font-size: 28px;
  letter-spacing:-.02em;
  line-height: 1.12;
  font-weight: 950;
}
article{
  border: 1px solid color-mix(in srgb, var(--border) 74%, transparent);
  background: color-mix(in srgb, var(--surface) 90%, transparent);
  border-radius: var(--radius-lg);
  padding: 18px 18px;
  box-shadow: var(--shadow2);
}
article + article{ margin-top: 16px; }
article h3{
  margin: 0 0 8px;
  font-size: 18px;
  letter-spacing:-.01em;
  font-weight: 900;
}
article p{ margin: 0 0 12px; color: color-mix(in srgb, var(--text) 88%, var(--muted)); }
.benefit-grid{
  list-style:none;
  padding: 0;
  margin: 0;
  display:grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.benefit-grid li{
  padding: 10px 12px;
  border-radius: var(--radius-md);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  font-weight: 750;
  color: var(--text);
}
.cta-row{
  margin-top: 14px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 10px;
  border-top: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
}
.cta-row.subtle{ justify-content:flex-end; border-top: none; padding-top: 0; }
.cta-line{ margin: 0; font-weight: 900; color: var(--text); }

.mini-grid{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}
.mini-card{
  padding: 12px 12px;
  border-radius: var(--radius-md);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: color-mix(in srgb, var(--surface) 82%, transparent);
}
.mini-title{ margin: 0 0 6px; font-weight: 950; color: var(--text); }
.mini-body{ margin: 0; color: color-mix(in srgb, var(--text) 86%, var(--muted)); }

.proof-row{
  margin-top: 16px;
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  align-items: stretch;
}
.proof-figure{
  margin:0;
  padding: 12px;
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  display:grid;
  gap: 8px;
  align-content: start;
}
.proof-figure img{ display:block; width:100%; height:auto; object-fit: contain; margin-inline:auto; }
.proof-figure figcaption{ font-size: 12px; font-weight: 700; color: color-mix(in srgb, var(--text) 72%, var(--muted)); }
.proof-photo{
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  filter: saturate(1.05) contrast(1.02);
}

/* --------- Pricing --------- */
.pricing-grid{
  margin-top: 14px;
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.price-card{
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  box-shadow: var(--shadow2);
  padding: 14px;
  display:flex;
  flex-direction: column;
  min-height: 100%;
}
.price-top{ display:grid; gap: 10px; }
.badge{
  width: fit-content;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  font-weight: 950;
  font-size: 12px;
  letter-spacing:.02em;
}
.packshot-stack{
  position: relative;
  height: 150px;
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--surface) 90%, transparent),
    color-mix(in srgb, var(--surface) 70%, transparent));
  overflow:hidden;
}
.packshot-img{
  position:absolute;
  inset: 10px;
  width: calc(100% - 20px);
  height: calc(100% - 20px);
  object-fit: contain;
  display:block;
  margin-inline:auto;
  filter: drop-shadow(0 20px 26px rgba(0,0,0,.18));
}
.packshot-stack[data-stack="1"] .packshot-img{
  transform: translateY(4px);
}
.packshot-stack[data-stack="3"] .packshot-img.l1{ transform: translate(-18px, 6px) rotate(-2deg); opacity:.95; }
.packshot-stack[data-stack="3"] .packshot-img.l2{ transform: translate(0px, 2px) rotate(0deg); opacity:1; }
.packshot-stack[data-stack="3"] .packshot-img.l3{ transform: translate(18px, -4px) rotate(2deg); opacity:.9; }

.packshot-stack[data-stack="6"] .packshot-img.l1{ transform: translate(-28px, 10px) rotate(-3deg); opacity:.78; }
.packshot-stack[data-stack="6"] .packshot-img.l2{ transform: translate(-12px, 6px) rotate(-2deg); opacity:.86; }
.packshot-stack[data-stack="6"] .packshot-img.l3{ transform: translate(4px, 3px) rotate(-1deg); opacity:.92; }
.packshot-stack[data-stack="6"] .packshot-img.l4{ transform: translate(20px, 0px) rotate(1deg); opacity:.92; }
.packshot-stack[data-stack="6"] .packshot-img.l5{ transform: translate(36px, -4px) rotate(2deg); opacity:.86; }
.packshot-stack[data-stack="6"] .packshot-img.l6{ transform: translate(52px, -8px) rotate(3deg); opacity:.78; }

.plan-title{ margin: 0; font-size: 15px; }
.plan-list{
  margin: 0;
  padding-left: 18px;
  color: color-mix(in srgb, var(--text) 86%, var(--muted));
  font-weight: 650;
}
.price-cta{
  margin-top: auto;
  padding-top: 12px;
}

/* --------- FAQ --------- */
.faq{
  display:grid;
  gap: 10px;
  margin-top: 12px;
}
.faq-item{
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  overflow:hidden;
}
.faq-item summary{
  list-style: none;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 12px;
  cursor:pointer;
  font-weight: 900;
  color: var(--text);
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item .a{ padding: 0 12px 12px; }
.faq-item .a p{ margin: 0; }
.faq-item[open] summary .icon{ transform: rotate(45deg); }
.icon{ transition: transform var(--fast) ease; }

/* --------- Footer --------- */
footer{
  border-top: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  padding: 28px 16px;
}
.footer-inner{
  max-width: 1160px;
  margin: 0 auto;
  display:grid;
  gap: 12px;
  justify-items: center;
  text-align:center;
}
.affiliate{
  margin: 0;
  font-size: 12px;
  color: color-mix(in srgb, var(--text) 78%, var(--muted));
  font-weight: 750;
}
.whywebuy{
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 4px;
  font-weight: 900;
}
.small{ margin: 0; font-size: 12px; color: color-mix(in srgb, var(--text) 66%, var(--muted)); }

/* --------- Reveal motion --------- */
[data-reveal]{
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--slow) ease, transform var(--slow) ease;
}
.is-in{
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce){
  *{ scroll-behavior:auto !important; }
  [data-reveal]{ opacity:1; transform:none; transition:none; }
  .btn{ transition:none; }
  .icon{ transition:none; }
}

/* --------- Responsive rules --------- */
@media (max-width: 920px){
  .hero-inner{ grid-template-columns: 1fr; padding-top: 52px; }
  .hero-media{ justify-items: start; }
  .nav{ display:none; } /* keep it clean; anchor nav not critical on small screens */
}
@media (max-width: 720px){
  body{ text-align:center; }
  .nav-inner{ justify-content: space-between; }
  .brand{ min-width: 0; }
  main{ padding-bottom: 60px; }
  section > h2{ font-size: 24px; }
  .hero-points, .benefit-grid, .plan-list, .faq-item summary, .faq-item .a{ text-align:left; }
  .hero-cta, .cta-row{ flex-direction: column; align-items: center; }
  .btn{ width: min(100%, 360px); }
  .benefit-grid{ grid-template-columns: 1fr; }
  .mini-grid{ grid-template-columns: 1fr; }
  .proof-row{ grid-template-columns: 1fr; }
  .pricing-grid{ grid-template-columns: 1fr; }
}

/* Offline page tweaks */
body.offline main{ padding-top: 22px; }