@layer reset, tokens, base, layout, components, utils;

@layer tokens {
  :root {
    --ink: hsl(200 18% 9%);
    --base: hsl(202 16% 13%);
    --surface: hsl(200 14% 18%);
    --surface-2: hsl(200 13% 23%);
    --line: hsl(200 12% 30% / 0.55);
    --paper: hsl(190 22% 96%);
    --muted: hsl(195 10% 68%);
    --accent: hsl(172 64% 55%);
    --accent-soft: hsl(176 70% 74%);
    --accent-ink: hsl(196 40% 8%);
    --danger: hsl(356 64% 62%);

    --grad: linear-gradient(135deg, hsl(202 20% 11%), hsl(190 35% 16%) 58%, hsl(172 50% 24%));
    --grad-line: linear-gradient(90deg, transparent, var(--accent) 40%, var(--accent-soft) 60%, transparent);

    --shadow: 0 18px 48px -24px hsl(196 60% 4% / 0.8);
    --shadow-soft: 0 8px 26px -18px hsl(196 60% 4% / 0.7);
    --shadow-lift: 0 28px 70px -30px hsl(172 60% 20% / 0.5);

    --font-display: "Space Grotesk", system-ui, sans-serif;
    --font-body: "Inter", system-ui, -apple-system, sans-serif;

    --step-h1: clamp(2.2rem, 1.3rem + 4.2vw, 3.5rem);
    --step-h2: clamp(1.7rem, 1.2rem + 2.2vw, 2.4rem);
    --step-h3: clamp(1.25rem, 1.05rem + 0.9vw, 1.55rem);
    --step-body: clamp(1rem, 0.96rem + 0.2vw, 1.1rem);

    --s-1: 0.5rem;
    --s-2: 1rem;
    --s-3: 1.5rem;
    --s-4: 2rem;
    --s-5: 3rem;
    --s-6: 4rem;
    --s-7: 6rem;

    --radius: 14px;
    --radius-sm: 9px;
    --container: 75rem;
    --header-h: 4.75rem;
  }
}

@layer reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  * {
    margin: 0;
  }

  html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
  }

  body {
    min-height: 100vh;
    background: var(--base);
    color: var(--paper);
    font-family: var(--font-body);
    font-size: var(--step-body);
    line-height: 1.62;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
  }

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

  a {
    color: inherit;
    text-decoration: none;
  }

  button,
  input,
  textarea {
    font: inherit;
    color: inherit;
  }

  h1,
  h2,
  h3 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.12;
    letter-spacing: -0.01em;
  }

  ul {
    list-style: none;
    padding: 0;
  }

  :focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
  }

  @media (prefers-reduced-motion: reduce) {
    * {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto;
    }
  }
}

@layer base {
  @font-face {
    font-family: "Space Grotesk";
    src: url("../fonts/space-grotesk-500.woff2") format("woff2");
    font-weight: 500;
    font-display: swap;
  }
  @font-face {
    font-family: "Space Grotesk";
    src: url("../fonts/space-grotesk-700.woff2") format("woff2");
    font-weight: 700;
    font-display: swap;
  }
  @font-face {
    font-family: "Inter";
    src: url("../fonts/inter-400.woff2") format("woff2");
    font-weight: 400;
    font-display: swap;
  }
  @font-face {
    font-family: "Inter";
    src: url("../fonts/inter-600.woff2") format("woff2");
    font-weight: 600;
    font-display: optional;
  }

  h1 {
    font-size: var(--step-h1);
  }
  h2 {
    font-size: var(--step-h2);
  }
  h3 {
    font-size: var(--step-h3);
    font-weight: 500;
  }

  p {
    max-width: 68ch;
  }

  ::selection {
    background: var(--accent);
    color: var(--accent-ink);
  }
}

@layer layout {
  .wrap {
    width: 100%;
    max-width: var(--container);
    margin-inline: auto;
    padding-inline: clamp(1.1rem, 0.5rem + 3vw, 2.5rem);
  }

  .section {
    padding-block: clamp(3rem, 2rem + 6vw, 6rem);
  }

  .section-tight {
    padding-block: clamp(2.4rem, 1.8rem + 4vw, 4rem);
  }

  .stack > * + * {
    margin-top: var(--s-3);
  }
}

@layer utils {
  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    border: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }

  .skip-nav {
    position: absolute;
    top: -100px;
    left: var(--s-2);
    z-index: 400;
    padding: 0.6rem 1rem;
    background: var(--accent);
    color: var(--accent-ink);
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: top 0.2s ease;
  }
  .skip-nav:focus {
    top: var(--s-2);
  }

  .accent {
    color: var(--accent);
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: var(--s-2);
    color: var(--accent);
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
  }
  .eyebrow::before {
    content: "";
    width: 1.8rem;
    height: 2px;
    background: var(--grad-line);
  }

  .lead {
    color: var(--muted);
    font-size: clamp(1.05rem, 1rem + 0.4vw, 1.25rem);
  }

  /* TODO: revisar el contraste del hover en movil con luz directa */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 48px;
    padding: 0.85rem 1.6rem;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    background: var(--accent);
    color: var(--accent-ink);
    font-weight: 600;
    letter-spacing: 0.01em;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  }
  .btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lift);
    background: var(--accent-soft);
  }

  .btn-ghost {
    background: transparent;
    border-color: var(--line);
    color: var(--paper);
  }
  .btn-ghost:hover {
    background: hsl(172 40% 50% / 0.12);
    border-color: var(--accent);
    box-shadow: none;
  }

  .reveal {
    opacity: 1;
  }
  .has-js .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .has-js .reveal.is-visible {
    opacity: 1;
    transform: none;
  }
  @media (prefers-reduced-motion: reduce) {
    .has-js .reveal {
      opacity: 1;
      transform: none;
    }
  }
}