/* AdaptiveLUG interim landing page. Distilled from the hugo-adlug
   theme's token system; dark-only, per the dark-first brand. */

@font-face {
  font-family: "Space Grotesk";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/space-grotesk-600.woff2") format("woff2");
}
@font-face {
  font-family: "Space Grotesk";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../fonts/space-grotesk-700.woff2") format("woff2");
}
@font-face {
  font-family: "Atkinson Hyperlegible";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/atkinson-400.woff2") format("woff2");
}
@font-face {
  font-family: "Atkinson Hyperlegible";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../fonts/atkinson-700.woff2") format("woff2");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-400.woff2") format("woff2");
}

:root {
  color-scheme: dark;

  --font-sans: "Space Grotesk", -apple-system, BlinkMacSystemFont,
    "Segoe UI", Helvetica, Arial, sans-serif;
  --font-body: "Atkinson Hyperlegible", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, Menlo,
    Consolas, monospace;

  --text-xs: 0.78rem;
  --text-sm: 0.875rem;
  --text-base: 1.0625rem;
  --text-lg: 1.1875rem;
  --text-xl: 1.375rem;
  --text-2xl: clamp(1.5rem, 1.1rem + 1.6vw, 1.875rem);
  --text-display: clamp(2.6rem, 1.5rem + 4.5vw, 4.25rem);
  --leading-body: 1.6;
  --leading-tight: 1.12;
  --tracking-tight: -0.02em;
  --tracking-label: 0.12em;

  --space-2: 0.5rem;  --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.5rem;  --space-6: 2rem;    --space-7: 3rem;
  --container: 72rem;
  --radius-sm: 6px; --radius: 10px; --radius-lg: 14px;
  --border: 1px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --dur: 0.16s;

  --orange: #F15A22;
  --ember:  #C2410C;

  --base:    #0F1216;
  --surface: #171B21;
  --raised:  #1E242C;
  --hair:    #2A313A;
  --text:  #F2F4F7;
  --muted: #AAB3BD;

  --accent:       #F15A22;
  --accent-hover: #FF7A4A;
  --accent-solid: #F15A22;
  --on-accent:    #1B1F24;
  --selection:    rgba(241, 90, 34, 0.30);

  /* hairline that fades out toward the edges */
  --hair-fade: linear-gradient(90deg, transparent,
    var(--hair) 18%, var(--hair) 82%, transparent);
}

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

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

body {
  margin: 0;
  background: var(--base);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: clip;
  overflow-wrap: break-word;
}

::selection { background: var(--selection); }

h1, h2, h3 {
  font-family: var(--font-sans);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--text);
  margin: 0 0 0.5em;
  text-wrap: balance;
}
h1 { font-size: var(--text-display); font-weight: 700; }
h2 { font-size: var(--text-2xl); font-weight: 600; }
h3 { font-size: var(--text-xl); font-weight: 600; }

p { margin: 0 0 1rem; }

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  transition: color var(--dur) var(--ease);
}
a:hover { color: var(--accent-hover); }

strong { color: var(--text); font-weight: 700; }

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

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

.skip-link {
  position: fixed;
  top: 0; left: 50%;
  transform: translate(-50%, -120%);
  z-index: 100;
  background: var(--accent-solid);
  color: var(--on-accent);
  font-family: var(--font-sans);
  font-weight: 600;
  padding: 0.6rem 1rem;
  border-radius: 0 0 var(--radius) var(--radius);
  transition: transform var(--dur) var(--ease);
}
.skip-link:focus { transform: translate(-50%, 0); }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 3vw, 1.75rem);
}

/* ── Header: floats over the hero decor (single page, no nav) ── */
.site-header {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 10;
  padding-block: var(--space-5);
}

.wordmark {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.6rem;
  letter-spacing: var(--tracking-tight);
  color: var(--text);
  text-decoration: none;
}
.wordmark:hover { color: var(--text); }
.wordmark .accent { color: var(--orange); }

/* ── Hero, with the theme's aurora + dot-grid decor ── */
.hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding-block: clamp(4rem, 12vw, 8rem);
  padding-block-start: clamp(7rem, 16vw, 11rem);
}

.hero::before {
  content: "";
  position: absolute;
  inset: -30% -10% auto -10%;
  height: 150%;
  background:
    radial-gradient(34% 34% at 22% 28%,
      color-mix(in srgb, var(--orange) 16%, transparent),
      transparent 70%),
    radial-gradient(30% 30% at 78% 16%,
      color-mix(in srgb, var(--ember) 14%, transparent),
      transparent 70%);
  background-repeat: no-repeat;
  filter: blur(26px);
  opacity: 0.9;
  animation: decor-aurora 24s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: -1;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    color-mix(in srgb, var(--text) 7%, transparent) 1px,
    transparent 1.5px);
  background-size: 26px 26px;
  -webkit-mask-image: radial-gradient(120% 90% at 50% 30%,
    #000 30%, transparent 75%);
          mask-image: radial-gradient(120% 90% at 50% 30%,
    #000 30%, transparent 75%);
  pointer-events: none;
  z-index: -1;
  opacity: 0.7;
}

@keyframes decor-aurora {
  from {
    background-position: 0% 0%, 100% 0%;
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    background-position: 18% 12%, 82% 16%;
    transform: translate3d(0, -1.5%, 0) scale(1.05);
  }
}

.hero__inner { max-width: 52rem; }

.kicker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 var(--space-4);
}
.kicker::before {
  content: "";
  width: 1.5rem;
  height: 2px;
  background: var(--accent-solid);
}

.hero__lead {
  font-size: var(--text-xl);
  color: var(--muted);
  max-width: 46ch;
  margin-bottom: var(--space-6);
}

/* staggered fade-up entrance; the global reduced-motion rule
   snaps it straight to the final frame */
.hero__inner > * {
  animation: rise-in 0.6s var(--ease) both;
}
.hero__inner > :nth-child(2) { animation-delay: 0.08s; }
.hero__inner > :nth-child(3) { animation-delay: 0.16s; }
.hero__inner > :nth-child(4) { animation-delay: 0.24s; }

@keyframes rise-in {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--text-base);
  line-height: 1.2;
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius);
  border: var(--border) solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--accent-solid);
  color: var(--on-accent);
  box-shadow: 0 0 24px
    color-mix(in srgb, var(--orange) 28%, transparent);
}
.btn--primary:hover {
  background: var(--accent-hover);
  color: var(--on-accent);
  box-shadow: 0 0 36px
    color-mix(in srgb, var(--orange) 45%, transparent);
}

/* ── Sections ── */
.section {
  position: relative;
  padding-block: clamp(3rem, 7vw, 5rem);
}
.section::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--hair-fade);
}
.section p { max-width: 68ch; }

/* ── Values ── */
.values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: var(--space-5);
  padding: 0;
  margin: var(--space-6) 0 0;
  list-style: none;
}
.values li {
  background: var(--surface);
  border: var(--border) solid var(--hair);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}
.values li:hover {
  border-color: color-mix(in srgb, var(--orange) 55%, var(--hair));
  box-shadow: 0 0 28px
    color-mix(in srgb, var(--orange) 12%, transparent);
  transform: translateY(-2px);
}
.values h3 { font-size: var(--text-lg); margin-bottom: var(--space-2); }
.values p { margin: 0; color: var(--muted); }

/* ── Footer, with the theme's shimmer line + drifting glow ── */
.site-footer {
  position: relative;
  isolation: isolate;
  margin-top: auto;
  padding-block: var(--space-6);
  color: var(--muted);
  font-size: var(--text-sm);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    transparent 0%,
    color-mix(in srgb, var(--orange) 0%, transparent) 10%,
    var(--orange) 35%, var(--ember) 50%, var(--orange) 65%,
    transparent 90%);
  background-size: 220% 100%;
  background-repeat: no-repeat;
  opacity: 0.8;
  animation: decor-shimmer 9s linear infinite;
  pointer-events: none;
}

.site-footer::after {
  content: "";
  position: absolute;
  left: 0; right: 0; top: -150px;
  height: 150px;
  background: radial-gradient(42% 120% at 50% 100%,
    color-mix(in srgb, var(--orange) 22%, transparent),
    transparent 72%);
  background-size: 55% 100%;
  background-repeat: no-repeat;
  background-position: 25% 100%;
  opacity: 0.55;
  animation: decor-drift 17s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: -1;
}

@keyframes decor-shimmer {
  from { background-position: -60% 0; }
  to   { background-position: 160% 0; }
}
@keyframes decor-drift {
  from { background-position: 22% 100%; }
  to   { background-position: 78% 100%; }
}

.site-footer .wordmark { font-size: 1.1rem; }
.site-footer p { margin: var(--space-2) 0 0; }

/* Reduced motion: kill the animations but keep tasteful, visible
   static states (a frozen end-frame can hide the accents). */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .site-footer::before { animation: none; background-position: 50% 0; }
  .site-footer::after  { animation: none; background-position: 50% 100%; }
  .hero::before {
    animation: none;
    background-position: 0% 0%, 100% 0%;
    transform: none;
  }
}