/*
  Modern, lightweight CSS using cascade layers, CSS variables, and
  fluid type/spacing. No framework required.
*/

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

/* 1) Reset (inspired by modern-normalize + Andy Bell’s reset) */
@layer reset {
  *,*::before,*::after{box-sizing:border-box}
  html:focus-within{scroll-behavior:smooth}
  body,h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
  ul[role='list'],ol[role='list']{list-style:none}
  body{min-height:100vh;text-rendering:optimizeLegibility}
  a:not([class]){text-decoration-skip-ink:auto}
  img,picture{max-width:100%;display:block}
  input,button,textarea,select{font:inherit}
  @media (prefers-reduced-motion: reduce){
    html:focus-within{scroll-behavior:auto}
    *,*::before,*::after{animation-duration:0.01ms !important;
      animation-iteration-count:1 !important; transition-duration:0.01ms !important;}
  }
}

/* 2) Base tokens */
@layer base {
  :root{
    /* Color system */
    --bg: #0b0c0f;
    --surface: #101218;
    --elev: #141824;
    --muted: #8b93a7;
    --text: #e6e9ef;
    --accent: #f59e0b; /* amber 500 */
    --accent-600:#d97706; /* amber 600 */
    --accent-700:#b45309; /* amber 700 */

    /* Typography */
    --font-sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
    --step--1: clamp(.85rem, .82rem + .2vw, .95rem);
    --step-0: clamp(1rem, .9rem + .6vw, 1.125rem);
    --step-1: clamp(1.25rem, 1.05rem + 1vw, 1.5rem);
    --step-2: clamp(1.5rem, 1.2rem + 1.8vw, 2rem);
    --step-3: clamp(2rem, 1.6rem + 2.6vw, 2.8rem);

    /* Spacing scale */
    --space-1: .25rem;
    --space-2: .5rem;
    --space-3: .75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-7: 3rem;
    --radius: 12px;
    --shadow-1: 0 1px 2px rgba(0,0,0,.15), 0 4px 12px rgba(0,0,0,.2);
  }

  @media (prefers-color-scheme: light){
    :root{ --bg: #ffffff; --surface:#ffffff; --elev:#f7f7fb; --text:#1f2430; --muted:#5b6070; }
  }

  html { color-scheme: light dark; }
  body { background: var(--bg); color: var(--text); font-family: var(--font-sans); font-size: var(--step-0); line-height: 1.6; }
  .container { width: min(100% - 2*var(--space-6), 72rem); margin-inline: auto; }
  .flow > * + * { margin-top: var(--space-5); }
  .muted { color: var(--muted); }
}

/* 3) Layout */
@layer layout {
  .skip-link { position: absolute; left: -10000px; top: auto; width: 1px; height: 1px; overflow: hidden; }
  .skip-link:focus { left: 1rem; top: 1rem; width: auto; height: auto; padding: .5rem .75rem; background: var(--accent); color: #000; border-radius: .5rem; }

  .site-header .topbar { background: color-mix(in oklab, var(--accent) 15%, transparent); border-bottom: 1px solid color-mix(in oklab, var(--accent) 35%, transparent); }
  .utility-nav { display: flex; gap: var(--space-4); justify-content: flex-end; padding-block: .5rem; font-size: var(--step--1); }
  .utility-nav a { color: var(--text); opacity: .8; text-decoration: none; }
  .utility-nav a:hover { opacity: 1; }

  .header-inner { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: var(--space-4); padding-block: var(--space-4); }
  .brand { display: inline-flex; gap: .75rem; align-items: center; text-decoration: none; color: var(--text); }
  .brand .logo { font-size: 1.5rem; }
  .brand-text small { display: block; color: var(--muted); font-size: .85em; }

  /* details-based mobile nav */
  .main-nav { position: relative; }
  .menu-toggle { cursor: pointer; padding: .6rem .9rem; border-radius: .6rem; background: var(--elev); border: 1px solid color-mix(in oklab, var(--elev), #000 10%); }
  .menu { display: grid; gap: .25rem; position: absolute; right: 0; top: calc(100% + .5rem); background: var(--surface); border: 1px solid color-mix(in oklab, var(--elev), #000 10%); border-radius: var(--radius); padding: .5rem; min-width: 16rem; box-shadow: var(--shadow-1); }
  .main-nav[open] .menu { animation: fadeIn .12s ease-out; }
  .menu-link { display: block; padding: .6rem .8rem; border-radius: .5rem; text-decoration: none; color: var(--text); }
  .menu-link:hover { background: color-mix(in oklab, var(--accent) 22%, transparent); }

  @keyframes fadeIn { from { opacity: 0; transform: translateY(-2px); } }

  /* desktop nav */
  @media (min-width: 860px){
    .header-inner { grid-template-columns: auto 1fr auto; }
    .main-nav { all: unset; display: block; }
    .menu-toggle { display: none; }
    .menu { all: unset; display: flex; gap: .25rem; }
    .menu-link { padding: .5rem .75rem; }
  }

  .hero { background: linear-gradient(180deg, color-mix(in oklab, var(--accent) 16%, transparent) 0%, transparent 60%); padding-block: clamp(2.5rem, 4vw, 4rem); border-bottom: 1px solid color-mix(in oklab, var(--accent) 25%, transparent); }
  .hero h1 { font-size: var(--step-3); line-height: 1.1; }
  .hero .lead { font-size: var(--step-1); color: var(--muted); max-width: 60ch; }
  .hero .actions { margin-top: var(--space-5); display: flex; gap: var(--space-3); align-items: center; }

  .site-main { padding-block: var(--space-6); }

  .hero.hero-with-banner { position: relative; padding-top: clamp(4rem, 6vw, 5.5rem); }
  .hero.hero-with-banner .coming-soon-banner { position: absolute; top: 1.5rem; left: 50%; transform: translateX(-50%) rotate(-4deg); background: linear-gradient(135deg, #ef4444, #b91c1c); color: #fff; text-transform: uppercase; font-weight: 700; letter-spacing: .16em; padding: .45rem 3rem; border-radius: 999px; box-shadow: var(--shadow-1); pointer-events: none; z-index: 2; }
  .hero.hero-with-banner .coming-soon-banner span { display: inline-block; }
  @media (max-width: 640px){ .hero.hero-with-banner .coming-soon-banner { font-size: .75rem; padding: .35rem 2.25rem; top: .75rem; } }

  .ad-wrapper { margin-block: var(--space-6); }
  .ad-wrapper .container { display: flex; justify-content: center; }
  .ad-card { width: min(100%, 60rem); background: var(--surface); border: 1px solid color-mix(in oklab, var(--accent) 22%, transparent); border-radius: calc(var(--radius) + 4px); padding: clamp(var(--space-4), 3vw, var(--space-5)); box-shadow: var(--shadow-1); display: grid; gap: var(--space-3); justify-items: center; }
  .ad-label { display: inline-flex; align-items: center; gap: var(--space-2); font-size: var(--step--1); letter-spacing: .12em; text-transform: uppercase; color: color-mix(in oklab, var(--accent) 55%, var(--muted)); background: color-mix(in oklab, var(--accent) 18%, transparent); border-radius: 999px; padding: var(--space-1) var(--space-3); box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--accent) 35%, transparent); }
  .ad-label.has-image { background: transparent; box-shadow: none; padding: 0; }
  .ad-label img { display: block; height: 16px; width: auto; filter: drop-shadow(0 1px 1px rgba(0,0,0,.25)); }
  .ad-slot { display: block; width: 100%; min-height: 120px; border-radius: calc(var(--radius) - 2px); overflow: hidden; }
  @media (min-width: 1024px){ .ad-card { padding: var(--space-6); } }
  .site-footer { margin-top: var(--space-7); padding-block: var(--space-6); border-top: 1px solid color-mix(in oklab, var(--accent) 25%, transparent); background: color-mix(in oklab, var(--accent) 8%, transparent); }
  .footer-grid { display: grid; gap: var(--space-6); grid-template-columns: 1fr; }
  .foot-brand { display: flex; gap: var(--space-3); align-items: center; }
  .foot-brand .logo { font-size: 1.5rem; }
  .foot-nav { display: grid; gap: .25rem; grid-template-columns: repeat(2,minmax(0,1fr)); }
  .foot-nav a { color: var(--text); text-decoration: none; padding: .25rem 0; opacity: .9; }
  .foot-nav a:hover { color: var(--accent); }
  .foot-meta { font-size: var(--step--1); }
  @media (min-width: 860px){
    .footer-grid { grid-template-columns: 1.2fr 1fr 1fr; align-items: start; }
    .foot-nav { grid-template-columns: repeat(3,minmax(0,1fr)); }
  }
}

/* 4) Components */
@layer components {
  .btn { display: inline-flex; align-items: center; gap: .5rem; padding: .65rem .95rem; font-weight: 600; border-radius: .75rem; text-decoration: none; border: 1px solid transparent; }
  .btn-primary { background: var(--accent); color: #111; border-color: color-mix(in oklab, var(--accent) 90%, #000 10%); box-shadow: var(--shadow-1); }
  .btn-primary:hover { background: var(--accent-600); }
  .btn-ghost { background: transparent; color: var(--text); border-color: color-mix(in oklab, var(--accent) 35%, transparent); }
  .btn-ghost:hover { background: color-mix(in oklab, var(--accent) 15%, transparent); }
  .eyebrow { letter-spacing: .12em; text-transform: uppercase; color: var(--accent); font-weight: 700; font-size: .8em; }
}

/* 5) Utilities */
@layer utilities {
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;clip:rect(0,0,0,0);overflow:hidden;white-space:nowrap;border:0}
}