/* Shared styles for the Zenith landing site (es/index.html + en/index.html).
   One file so the two languages can't drift. Tokens mirror
   frontend/src/assets/main.css (DESIGN.md "The Performance Console").
   Dark is home; light is the daylight counterpart. */
    /* Tokens mirror frontend/src/assets/main.css (DESIGN.md "The Performance Console").
       Dark is home; light is the daylight counterpart. */
    :root {
      --bg: oklch(0.208 0.042 265.8);
      --bg-deep: oklch(0.18 0.04 266);
      --card: oklch(0.255 0.038 265);
      --fill: oklch(0.279 0.041 260);
      --ink: oklch(0.984 0.003 248);
      --muted: oklch(0.704 0.04 257);
      --hairline: oklch(0.32 0.03 264);
      --primary: oklch(0.705 0.185 45);
      --on-primary: oklch(0.208 0.042 265.8);
      --success: oklch(0.72 0.19 149);

      --swim-bg: oklch(0.3 0.055 200);   --swim-fg: oklch(0.84 0.055 195);
      --bike-bg: oklch(0.31 0.055 245);  --bike-fg: oklch(0.84 0.06 240);
      --run-bg: oklch(0.33 0.055 80);    --run-fg: oklch(0.85 0.07 85);
      --str-bg: oklch(0.32 0.065 300);   --str-fg: oklch(0.85 0.07 300);

      --rpe-1: oklch(0.72 0.09 240);
      --rpe-2: oklch(0.74 0.1 165);
      --rpe-3: oklch(0.8 0.12 90);
      --rpe-4: oklch(0.72 0.16 50);
      --rpe-5: oklch(0.66 0.19 25);

      --font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
      --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
    }
    @media (prefers-color-scheme: light) {
      :root:not([data-theme="dark"]) {
        --bg: oklch(0.988 0.002 248);
        --bg-deep: oklch(0.965 0.006 258);
        --card: oklch(1 0 0);
        --fill: oklch(0.967 0.006 258);
        --ink: oklch(0.21 0.042 265.8);
        --muted: oklch(0.5 0.03 257);
        --hairline: oklch(0.91 0.01 258);
        --primary: oklch(0.69 0.19 45);
        --on-primary: oklch(0.21 0.042 265.8);
        --success: oklch(0.55 0.16 150);
        --swim-bg: oklch(0.92 0.045 195); --swim-fg: oklch(0.38 0.075 205);
        --bike-bg: oklch(0.92 0.04 240);  --bike-fg: oklch(0.4 0.095 245);
        --run-bg: oklch(0.93 0.045 85);   --run-fg: oklch(0.42 0.09 75);
        --str-bg: oklch(0.92 0.045 300);  --str-fg: oklch(0.42 0.11 300);
        --rpe-1: oklch(0.6 0.1 245);
        --rpe-2: oklch(0.6 0.11 160);
        --rpe-3: oklch(0.72 0.14 85);
        --rpe-4: oklch(0.66 0.17 48);
        --rpe-5: oklch(0.58 0.2 25);
      }
    }
    :root[data-theme="light"] {
      --bg: oklch(0.988 0.002 248);
      --bg-deep: oklch(0.965 0.006 258);
      --card: oklch(1 0 0);
      --fill: oklch(0.967 0.006 258);
      --ink: oklch(0.21 0.042 265.8);
      --muted: oklch(0.5 0.03 257);
      --hairline: oklch(0.91 0.01 258);
      --primary: oklch(0.69 0.19 45);
      --on-primary: oklch(0.21 0.042 265.8);
      --success: oklch(0.55 0.16 150);
      --swim-bg: oklch(0.92 0.045 195); --swim-fg: oklch(0.38 0.075 205);
      --bike-bg: oklch(0.92 0.04 240);  --bike-fg: oklch(0.4 0.095 245);
      --run-bg: oklch(0.93 0.045 85);   --run-fg: oklch(0.42 0.09 75);
      --str-bg: oklch(0.92 0.045 300);  --str-fg: oklch(0.42 0.11 300);
      --rpe-1: oklch(0.6 0.1 245);
      --rpe-2: oklch(0.6 0.11 160);
      --rpe-3: oklch(0.72 0.14 85);
      --rpe-4: oklch(0.66 0.17 48);
      --rpe-5: oklch(0.58 0.2 25);
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
    body {
      margin: 0;
      background: var(--bg);
      color: var(--ink);
      font-family: var(--font);
      font-size: 16px;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    .wrap { max-width: 1120px; margin-inline: auto; padding-inline: 20px; }
    h1, h2, h3 { margin: 0; text-wrap: balance; letter-spacing: -0.025em; line-height: 1.1; }
    p { margin: 0; }
    a { color: inherit; }
    :focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; border-radius: 6px; }
    .num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
    .eyebrow { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }
    .lede { color: var(--muted); font-size: 1.1rem; max-width: 56ch; }

    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding-inline: 18px; border-radius: 10px;
      font-weight: 600; font-size: 0.95rem; text-decoration: none; white-space: nowrap;
      border: 1px solid var(--hairline); background: transparent; color: var(--ink);
      transition: background-color 180ms ease-out, border-color 180ms ease-out, transform 180ms ease-out;
    }
    .btn:hover { border-color: var(--muted); }
    .btn-primary { background: var(--primary); border-color: var(--primary); color: var(--on-primary); }
    .btn-primary:hover { background: color-mix(in oklch, var(--primary) 88%, white); border-color: transparent; transform: translateY(-1px); }

    /* ---------- Nav ---------- */
    .nav { border-bottom: 1px solid var(--hairline); }
    .nav .wrap { display: flex; align-items: center; gap: 24px; min-height: 64px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.05rem; text-decoration: none; letter-spacing: -0.01em; }
    .mark { width: 28px; height: 28px; border-radius: 8px; background: var(--primary); display: grid; place-items: center; }
    .mark svg { width: 16px; height: 16px; fill: var(--on-primary); }
    .nav-links { display: flex; gap: 22px; margin-left: auto; font-size: 0.92rem; color: var(--muted); }
    .nav-links a { text-decoration: none; }
    .nav-links a:hover { color: var(--ink); }
    .nav-cta { display: flex; gap: 10px; }
    @media (max-width: 760px) { .nav-links { display: none; } .nav-cta { margin-left: auto; } }

    /* ---------- Hero ---------- */
    .hero { padding-block: 72px 40px; display: grid; gap: 48px; }
    .hero-copy { display: grid; gap: 22px; max-width: 760px; }
    .hero h1 { font-size: clamp(2.4rem, 6vw, 4.25rem); font-weight: 800; letter-spacing: -0.04em; }
    .hero h1 em { font-style: normal; color: var(--primary); }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
    .hero-note { font-size: 0.85rem; color: var(--muted); }

    /* Week board: the product's core surface, drawn with the app's own tokens */
    .board-wrap { overflow-x: auto; border: 1px solid var(--hairline); border-radius: 14px; background: var(--card); }
    .board { min-width: 860px; display: grid; grid-template-columns: 132px repeat(7, minmax(0, 1fr)); font-size: 0.8rem; }
    .board-top { grid-column: 1 / -1; display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--hairline); }
    .board-top strong { font-weight: 600; }
    .board-top .range { color: var(--muted); }
    .board-top .seg { margin-left: auto; display: inline-flex; border: 1px solid var(--hairline); border-radius: 8px; overflow: hidden; font-size: 0.75rem; }
    .board-top .seg span { padding: 3px 10px; color: var(--muted); }
    .board-top .seg span.on { background: var(--fill); color: var(--ink); font-weight: 600; }
    .day { padding: 8px 10px; border-bottom: 1px solid var(--hairline); color: var(--muted); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; }
    .day b { display: block; font-family: var(--mono); font-weight: 500; font-size: 0.9rem; color: var(--ink); letter-spacing: 0; text-transform: none; }
    .day.today b { color: var(--primary); }
    .group-label { padding: 12px 14px; border-right: 1px solid var(--hairline); display: grid; align-content: start; gap: 2px; }
    .group-label strong { font-size: 0.85rem; }
    .group-label span { color: var(--muted); font-size: 0.72rem; }
    .cell { padding: 8px 6px; border-left: 1px solid var(--hairline); display: grid; align-content: start; gap: 6px; min-height: 104px; }
    .row-end .cell, .row-end.group-label { border-bottom: 0; }
    .row-sep { border-bottom: 1px solid var(--hairline); }
    .wo { border-radius: 8px; padding: 6px 8px; display: grid; gap: 2px; line-height: 1.3; }
    .wo .t { font-weight: 600; font-size: 0.78rem; }
    .wo .m { display: flex; justify-content: space-between; gap: 4px; font-family: var(--mono); font-size: 0.7rem; opacity: 0.9; }
    .wo.swim { background: var(--swim-bg); color: var(--swim-fg); }
    .wo.bike { background: var(--bike-bg); color: var(--bike-fg); }
    .wo.run  { background: var(--run-bg);  color: var(--run-fg); }
    .wo.str  { background: var(--str-bg);  color: var(--str-fg); }
    .rest { color: var(--muted); font-size: 0.72rem; padding: 6px 8px; }

    /* ---------- Sections ---------- */
    section.block { padding-block: 88px; border-top: 1px solid var(--hairline); }
    .section-head { display: grid; gap: 14px; margin-bottom: 44px; max-width: 700px; }
    .section-head h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); font-weight: 700; }

    /* Problem vs Zenith */
    .contrast { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
    @media (max-width: 760px) { .contrast { grid-template-columns: 1fr; } }
    .contrast > div { border: 1px solid var(--hairline); border-radius: 12px; padding: 24px; display: grid; gap: 14px; align-content: start; }
    .contrast > div.zen { background: var(--card); }
    .contrast h3 { font-size: 1.1rem; font-weight: 600; letter-spacing: -0.01em; }
    .contrast ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
    .contrast li { display: grid; grid-template-columns: 18px 1fr; gap: 10px; color: var(--muted); }
    .contrast li::before { content: "—"; color: var(--muted); }
    .contrast .zen li { color: var(--ink); }
    .contrast .zen li::before { content: "✓"; color: var(--success); font-weight: 700; }

    /* Workout anatomy */
    .anatomy { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 20px; align-items: start; }
    @media (max-width: 900px) { .anatomy { grid-template-columns: 1fr; } }
    .panel { background: var(--card); border: 1px solid var(--hairline); border-radius: 14px; padding: 22px; display: grid; gap: 18px; }
    .panel-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px; }
    .panel-head h3 { font-size: 1.15rem; font-weight: 600; letter-spacing: -0.01em; }
    .chip { display: inline-flex; align-items: center; border-radius: 999px; padding: 2px 10px; font-size: 0.72rem; font-weight: 600; }
    .chip.run { background: var(--run-bg); color: var(--run-fg); }
    .steps { display: grid; gap: 8px; }
    .step { display: grid; grid-template-columns: 1fr auto auto; gap: 12px; align-items: center; padding: 10px 12px; border: 1px solid var(--hairline); border-radius: 10px; font-size: 0.9rem; }
    .step .k { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); display: block; }
    .step .d { font-family: var(--mono); font-size: 0.85rem; }
    .rpe { font-family: var(--mono); font-size: 0.75rem; font-weight: 600; border-radius: 6px; padding: 2px 7px; color: var(--on-primary); }
    .repeat { border: 1px dashed var(--hairline); border-radius: 12px; padding: 8px; display: grid; gap: 8px; }
    .repeat-label { font-family: var(--mono); font-size: 0.78rem; color: var(--muted); padding-inline: 4px; }

    .profile { display: grid; grid-template-columns: 28px 1fr; gap: 8px; }
    .axis { position: relative; height: 180px; font-family: var(--mono); font-size: 0.68rem; color: var(--muted); }
    .axis span { position: absolute; right: 0; transform: translateY(50%); }
    .plot {
      position: relative; height: 180px; display: flex; align-items: flex-end; gap: 2px;
      border-bottom: 1px solid var(--hairline);
      background-image: linear-gradient(to top, var(--hairline) 1px, transparent 1px);
      background-size: 100% 20%;
    }
    .bar { border-radius: 3px 3px 0 0; min-width: 2px; }
    .profile-foot { grid-column: 2; display: flex; justify-content: space-between; font-family: var(--mono); font-size: 0.7rem; color: var(--muted); }
    .stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); border-radius: 10px; overflow: hidden; }
    .stats div { background: var(--card); padding: 12px 14px; display: grid; gap: 2px; }
    .stats dt { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
    .stats dd { margin: 0; font-family: var(--mono); font-size: 1.25rem; font-weight: 600; }
    .stats dd small { font-size: 0.72rem; color: var(--muted); font-weight: 400; }
    .fine { font-size: 0.85rem; color: var(--muted); }

    /* RPE explainer */
    .rpe-scale { display: grid; grid-template-columns: repeat(10, minmax(0, 1fr)); gap: 4px; margin-top: 8px; }
    .rpe-scale div { height: 36px; border-radius: 6px; display: grid; place-items: center; font-family: var(--mono); font-size: 0.78rem; font-weight: 600; color: var(--on-primary); }
    .rpe-ends { display: flex; justify-content: space-between; font-size: 0.75rem; color: var(--muted); margin-top: 6px; }

    /* Features */
    .features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--hairline); }
    @media (max-width: 900px) { .features { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
    @media (max-width: 560px) { .features { grid-template-columns: 1fr; } }
    .feature { padding: 24px 24px 28px 0; border-bottom: 1px solid var(--hairline); display: grid; gap: 8px; align-content: start; }
    .feature h3 { font-size: 1rem; font-weight: 600; letter-spacing: -0.01em; }
    .feature p { color: var(--muted); font-size: 0.93rem; }
    .roles { display: flex; flex-wrap: wrap; gap: 6px; }
    .role { font-size: 0.72rem; font-weight: 600; border-radius: 999px; padding: 2px 9px; }
    .role.manager { background: var(--str-bg); color: var(--str-fg); }
    .role.coach { background: var(--bike-bg); color: var(--bike-fg); }
    .role.athlete { background: var(--fill); color: var(--muted); }
    .soon { font-size: 0.68rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); border: 1px solid var(--hairline); border-radius: 999px; padding: 1px 8px; justify-self: start; }

    /* Pricing */
    .tiers { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
    @media (max-width: 900px) { .tiers { grid-template-columns: 1fr; max-width: 480px; } }
    .tier { border: 1px solid var(--hairline); border-radius: 14px; padding: 26px; display: grid; gap: 18px; align-content: start; background: var(--bg); }
    .tier.featured { background: var(--card); border-color: var(--primary); box-shadow: inset 0 0 0 1px var(--primary); }
    .tier-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
    .tier h3 { font-size: 1.15rem; font-weight: 600; letter-spacing: -0.01em; }
    .flag { font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; background: var(--primary); color: var(--on-primary); border-radius: 999px; padding: 3px 9px; }
    .tier .for { color: var(--muted); font-size: 0.92rem; }
    .amount { display: flex; align-items: baseline; gap: 6px; }
    .amount b { font-family: var(--mono); font-size: 2.6rem; font-weight: 600; letter-spacing: -0.04em; line-height: 1; }
    .amount span { color: var(--muted); }
    .yearly { font-size: 0.85rem; color: var(--muted); margin-top: -10px; }
    .tier ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; font-size: 0.93rem; border-top: 1px solid var(--hairline); padding-top: 16px; }
    .tier li { display: flex; justify-content: space-between; gap: 12px; }
    .tier li span:first-child { color: var(--muted); }
    .tier li span:last-child { font-weight: 500; }
    .pricing-notes { display: flex; flex-wrap: wrap; gap: 10px 28px; margin-top: 28px; color: var(--muted); font-size: 0.9rem; }
    .pricing-notes span::before { content: "✓ "; color: var(--success); font-weight: 700; }
    .founding { margin-top: 28px; border: 1px solid var(--hairline); border-radius: 14px; padding: 22px 24px; display: flex; flex-wrap: wrap; gap: 16px 32px; align-items: center; justify-content: space-between; background: var(--bg-deep); }
    .founding div { display: grid; gap: 4px; max-width: 62ch; }
    .founding strong { font-size: 1.05rem; }
    .founding p { color: var(--muted); font-size: 0.93rem; }

    /* FAQ */
    .faq { display: grid; gap: 0; max-width: 780px; border-top: 1px solid var(--hairline); }
    details { border-bottom: 1px solid var(--hairline); }
    summary { cursor: pointer; list-style: none; padding: 20px 36px 20px 0; font-weight: 600; position: relative; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-family: var(--mono); color: var(--muted); font-size: 1.2rem; transition: transform 180ms ease-out; }
    details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
    details p { padding-bottom: 20px; color: var(--muted); max-width: 66ch; }

    /* Final CTA + footer */
    .final { padding-block: 96px; border-top: 1px solid var(--hairline); background: var(--bg-deep); }
    .final .wrap { display: grid; gap: 22px; justify-items: start; }
    .final h2 { font-size: clamp(2rem, 4.4vw, 3.2rem); font-weight: 800; letter-spacing: -0.035em; max-width: 18ch; }
    footer { border-top: 1px solid var(--hairline); padding-block: 28px; font-size: 0.85rem; color: var(--muted); }
    footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; }
    footer nav { display: flex; gap: 20px; margin-left: auto; }
    footer a { text-decoration: none; }
    footer a:hover { color: var(--ink); }

    /* ---------- Language switcher ---------- */
    .lang-switch { display: flex; align-items: center; gap: 4px; margin-left: auto; font-size: 0.82rem; font-weight: 600; }
    .lang-switch a { text-decoration: none; color: var(--muted); padding: 3px 7px; border-radius: 6px; }
    .lang-switch a:hover { color: var(--ink); }
    .lang-switch a[aria-current="true"] { color: var(--ink); background: var(--fill); }
    .lang-switch .sep { color: var(--hairline); }