@layer reset, base, theme, components, utilities;

/* ---------------------------------------------------------------- */
/* Fonts                                                             */
/* ---------------------------------------------------------------- */
@import url("https://fonts.googleapis.com/css2?family=Oswald:wght@500;600;700&family=Inter:wght@400;500;600&display=swap");

/* ---------------------------------------------------------------- */
/* Reset                                                              */
/* ---------------------------------------------------------------- */
@layer reset {
  :where(*, *::before, *::after) {
    box-sizing: border-box;
  }

  :where(html) {
    -webkit-text-size-adjust: 100%;
  }

  :where(body, h1, h2, h3, h4, p, dl, dd, figure) {
    margin: 0;
  }

  :where(ul, ol) {
    margin: 0;
    padding: 0;
    list-style: none;
  }

  :where(img, svg) {
    display: block;
    max-inline-size: 100%;
  }

  :where(a) {
    color: inherit;
  }

  :where(button) {
    font: inherit;
    color: inherit;
    background: none;
    border: 0;
    cursor: pointer;
  }
}

/* ---------------------------------------------------------------- */
/* Design tokens & base                                              */
/* ---------------------------------------------------------------- */
@layer base {
  :root {
    color-scheme: dark;

    /* Tier 1: literal tokens */
    --color-black: #0a0a0a;
    --color-black-soft: #131313;
    --color-charcoal: #1c1c1e;
    --color-silver: #a5acaf;
    --color-silver-bright: #d3d8da;
    --color-white: #f5f6f6;

    /* Tier 2: semantic tokens */
    --color-bg: var(--color-black);
    --color-bg-alt: var(--color-black-soft);
    --color-surface: var(--color-charcoal);
    --color-accent: var(--color-silver);
    --color-accent-bright: var(--color-silver-bright);
    --color-text: var(--color-white);
    --color-text-muted: color-mix(in oklab, var(--color-white) 60%, var(--color-black));
    --color-border: color-mix(in oklab, var(--color-silver) 35%, transparent);

    /* Typography */
    --font-heading: "Oswald", "Arial Narrow", system-ui, sans-serif;
    --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

    /* Layout */
    --content-max: 68rem;
    --space-section: clamp(3.5rem, 6vw + 1rem, 7rem);
    --radius-md: 0.75rem;
    --radius-lg: 1.25rem;

    /* Motion */
    --ease-standard: cubic-bezier(0.2, 0.7, 0.2, 1);

    @property --animation-reduced {
      syntax: "*";
      inherits: false;
      initial-value: none;
    }
  }

  @media (forced-colors: active) {
    :root {
      --color-border: CanvasText;
    }
  }

  html {
    scroll-behavior: smooth;
    scroll-padding-top: 5.5rem;
  }

  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto;
    }
    * {
      animation: var(--animation-reduced) !important;
    }
  }

  body {
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

  h1, h2, h3 {
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 0.02em;
    line-height: 1.1;
    text-wrap: balance;
  }

  p {
    text-wrap: pretty;
    overflow-wrap: break-word;
  }

  h1 { font-size: clamp(2.5rem, 3vw + 1.5rem, 4.5rem); }
  h2 { font-size: clamp(1.75rem, 1.5vw + 1.3rem, 2.75rem); }
  h3 {
    font-size: 1.1rem;
    letter-spacing: 0.08em;
    color: var(--color-accent-bright);
  }

  code {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    background: color-mix(in oklab, var(--color-silver) 15%, transparent);
    padding: 0.1em 0.4em;
    border-radius: 0.3em;
    font-size: 0.9em;
  }

  :where(a:any-link, button, [tabindex]):focus-visible {
    outline: 3px solid var(--color-silver-bright);
    outline-offset: 3px;
  }
}

/* ---------------------------------------------------------------- */
/* Theme: shared visual patterns                                     */
/* ---------------------------------------------------------------- */
@layer theme {
  .eyebrow {
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.8rem;
    color: var(--color-accent);
    margin-block-end: 0.75rem;
  }

  .lead {
    max-width: 42rem;
    font-size: 1.1rem;
    color: color-mix(in oklab, var(--color-text) 88%, var(--color-black));
  }
}

/* ---------------------------------------------------------------- */
/* Components                                                        */
/* ---------------------------------------------------------------- */
@layer components {

  /* Skip link */
  .skip-link:where(:not(:focus-within, :active)) {
    position: absolute;
    clip-path: inset(50%);
    overflow: hidden;
    inline-size: 1px;
    block-size: 1px;
    white-space: nowrap;
  }
  .skip-link:focus-within,
  .skip-link:active {
    position: fixed;
    inset-block-start: 1rem;
    inset-inline-start: 1rem;
    z-index: 100;
    padding: 0.6rem 1rem;
    background: var(--color-silver-bright);
    color: var(--color-black);
    border-radius: var(--radius-md);
    font-weight: 600;
  }

  /* Header / nav */
  .site-header {
    position: sticky;
    inset-block-start: 0;
    z-index: 50;
    background: color-mix(in oklab, var(--color-bg) 88%, transparent);
    backdrop-filter: blur(10px);
    border-block-end: 1px solid var(--color-border);
  }

  .header-inner {
    max-width: var(--content-max);
    margin-inline: auto;
    padding-inline: 1.25rem;
    block-size: 4.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
  }

  .brand {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    text-decoration: none;
    font-family: var(--font-heading);
  }

  .brand-mark {
    display: grid;
    place-items: center;
    inline-size: 2.4rem;
    block-size: 2.4rem;
    border-radius: 50%;
    background: linear-gradient(155deg in oklab, var(--color-silver-bright), var(--color-silver) 60%, var(--color-black-soft));
    color: var(--color-black);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.03em;
  }

  .brand-name {
    font-size: 1rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
  }

  .primary-nav ul {
    display: flex;
    gap: 1.75rem;
  }

  .primary-nav a {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    padding-block: 0.35rem;
    border-block-end: 2px solid transparent;
    transition: color 0.2s var(--ease-standard), border-color 0.2s var(--ease-standard);
  }

  .primary-nav a:hover,
  .primary-nav a.is-active {
    color: var(--color-text);
    border-block-end-color: var(--color-silver);
  }

  .menu-button {
    display: none;
    inline-size: 2.75rem;
    block-size: 2.75rem;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--color-text);
  }

  .menu-button svg {
    inline-size: 1.5rem;
    block-size: 1.5rem;
  }

  @media (width <= 46rem) {
    .primary-nav { display: none; }
    .menu-button { display: inline-flex; }
  }

  /* Mobile nav (Popover API) */
  .mobile-nav {
    position: fixed;
    inset-block: 0;
    inset-inline-end: 0;
    inset-inline-start: auto;
    margin: 0;
    inline-size: min(80vw, 20rem);
    block-size: 100dvh;
    max-block-size: none;
    border: 0;
    border-inline-start: 1px solid var(--color-border);
    background: var(--color-bg-alt);
    color: var(--color-text);
    padding: 5.5rem 1.5rem 2rem;
    translate: 100% 0;
    transition: translate 0.32s var(--ease-standard), display 0.32s allow-discrete, overlay 0.32s allow-discrete;
  }

  .mobile-nav:popover-open {
    translate: 0 0;
  }

  @starting-style {
    .mobile-nav:popover-open {
      translate: 100% 0;
    }
  }

  .mobile-nav::backdrop {
    background: color-mix(in oklab, var(--color-black) 60%, transparent);
    transition: background 0.32s var(--ease-standard), display 0.32s allow-discrete, overlay 0.32s allow-discrete;
  }

  .mobile-nav:popover-open::backdrop {
    background: color-mix(in oklab, var(--color-black) 60%, transparent);
  }

  @starting-style {
    .mobile-nav:popover-open::backdrop {
      background: transparent;
    }
  }

  .mobile-nav ul {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }

  .mobile-nav a {
    text-decoration: none;
    font-family: var(--font-heading);
    font-size: 1.15rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--color-text);
  }

  @media (prefers-reduced-motion: reduce) {
    .mobile-nav,
    .mobile-nav::backdrop {
      transition-duration: 1ms;
    }
  }

  /* Hero */
  .hero {
    position: relative;
    display: grid;
    place-items: center;
    min-block-size: min(46rem, 92dvh);
    padding-block: var(--space-section);
    padding-inline: 1.25rem;
    text-align: center;
    overflow: clip;
  }

  .hero-bg {
    position: absolute;
    inset: 0;
    background:
      radial-gradient(60% 55% at 50% 15%, color-mix(in oklab, var(--color-silver) 22%, transparent), transparent),
      linear-gradient(180deg in oklab, var(--color-black), var(--color-black-soft));
    z-index: -1;
  }

  .hero-inner {
    max-width: 44rem;
  }

  .hero-tagline {
    margin-block-start: 1.25rem;
    font-size: 1.15rem;
    color: var(--color-text-muted);
  }

  .hero-actions {
    margin-block-start: 2rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
  }

  /* Buttons */
  .button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-block-size: 2.9rem;
    padding-inline: 1.6rem;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    transition: transform 0.15s var(--ease-standard), background 0.2s var(--ease-standard), color 0.2s var(--ease-standard);
  }

  .button:hover {
    transform: translateY(-2px);
  }

  .button-primary {
    background: linear-gradient(135deg in oklab, var(--color-silver-bright), var(--color-silver));
    color: var(--color-black);
  }

  .button-ghost {
    border: 1px solid var(--color-border);
    color: var(--color-text);
  }

  .button-ghost:hover {
    border-color: var(--color-silver);
  }

  /* Sections */
  .section {
    padding-block: var(--space-section);
    padding-inline: 1.25rem;
  }

  .section-alt {
    background: var(--color-bg-alt);
  }

  .section-inner {
    max-width: var(--content-max);
    margin-inline: auto;
  }

  .section h2 {
    margin-block-end: 1rem;
  }

  /* Specs card */
  .specs-card {
    margin-block-start: 2.5rem;
    padding: 1.75rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
  }

  .specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
    gap: 1.25rem 1.5rem;
    margin-block-start: 1rem;
  }

  .spec dt {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-block-end: 0.25rem;
  }

  .spec dd {
    font-weight: 600;
  }

  .specs-note {
    margin-block-start: 1.5rem;
    padding-block-start: 1.25rem;
    border-block-start: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.95rem;
  }

  /* Fan facts list */
  .fan-facts {
    margin-block-start: 2rem;
    display: grid;
    gap: 1px;
    background: var(--color-border);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: clip;
  }

  .fan-facts li {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--color-surface);
  }

  .fan-fact-label {
    color: var(--color-text-muted);
  }

  .fan-fact-value {
    font-weight: 600;
    text-align: right;
  }

  /* Photo placeholders */
  .photo-placeholder {
    margin-block-start: 2.5rem;
  }

  .placeholder-box {
    aspect-ratio: 16 / 9;
    display: grid;
    place-items: center;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    background: repeating-linear-gradient(-45deg, var(--color-surface) 0 1em, var(--color-bg-alt) 0 2em);
    color: var(--color-text-muted);
    font-size: 0.95rem;
    text-align: center;
    padding: 1rem;
  }

  .photo-placeholder figcaption {
    margin-block-start: 0.75rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
  }

  .gallery-grid {
    margin-block-start: 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
    gap: 1.25rem;
  }

  .placeholder-box-small {
    aspect-ratio: 4 / 3;
  }

  /* Contact */
  .section-contact {
    text-align: center;
  }

  .section-contact .section-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .contact-links {
    margin-block-start: 1.75rem;
  }

  /* Footer */
  .site-footer {
    padding: 2.5rem 1.25rem;
    text-align: center;
    border-block-start: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.85rem;
  }

  .footer-sub {
    margin-block-start: 0.35rem;
  }
}

/* ---------------------------------------------------------------- */
/* Utilities: scroll reveal                                          */
/* ---------------------------------------------------------------- */
@layer utilities {
  /* Content is fully visible by default — this is a progressive
     enhancement. The .js class is only added by main.js, and only once
     an IntersectionObserver is confirmed available, so a JS failure or
     an old browser always leaves content visible. */
  .js .reveal {
    opacity: 0;
    translate: 0 1.5rem;
    transition: opacity 0.6s var(--ease-standard), translate 0.6s var(--ease-standard);
  }

  .js .reveal.is-visible {
    opacity: 1;
    translate: 0 0;
  }

  @media (prefers-reduced-motion: reduce) {
    .js .reveal {
      opacity: 1;
      translate: 0 0;
      transition: none;
    }
  }
}