/* As Iron studio overview — matches product brand (landing / iron-dark) */

.ai-page {
  --paper: #e8e6e1;
  --paper-dim: color-mix(in srgb, #e8e6e1 65%, transparent);
  --surface: #171a21;
  --ink: #0e1014;
  --iron: #0e1014;
  --muted: #9aa0ab;
  --line: #2c313c;
  --accent: #2dd4bf;
  --accent-soft: #143532;
  --spark: #c8e84a;
  --cross-ink: #5a6170;
  --font-sans: "Archivo", ui-sans-serif, system-ui, sans-serif;
  --font-serif: "Source Serif 4", ui-serif, Georgia, serif;
  --font-display: "Bebas Neue", ui-sans-serif, system-ui, sans-serif;
  --radius: 0.25rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --max: 56rem;

  margin: 0;
  min-height: 100dvh;
  background: var(--iron);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

.ai-shell {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* —— Atmosphere (CrossField) —— */
.ai-atmosphere {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.ai-cross-field {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  color: var(--cross-ink);
}

.ai-cross-ink {
  opacity: 0.14;
}

.ai-grain {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
  background-size: 180px 180px;
}

.ai-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 0%, rgba(0, 0, 0, 0.55) 100%);
}

.ai-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(64px);
}

.ai-blob-a {
  left: -5rem;
  top: 4rem;
  width: 16rem;
  height: 16rem;
  background: color-mix(in srgb, var(--accent) 25%, transparent);
  animation: ai-soft-pulse 5.5s ease-in-out infinite;
}

.ai-blob-b {
  right: -2.5rem;
  bottom: 0;
  width: 18rem;
  height: 18rem;
  background: color-mix(in srgb, var(--spark) 15%, transparent);
}

@keyframes ai-soft-pulse {
  0%, 100% { opacity: 0.85; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.06); }
}

/* —— Skip / motion —— */
.skip-link {
  position: absolute;
  left: 1rem;
  top: 0;
  z-index: 100;
  transform: translateY(-120%);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  text-decoration: none;
}

.skip-link:focus {
  transform: translateY(0.75rem);
  outline: 2px solid var(--spark);
  outline-offset: 2px;
}

.ai-fade {
  animation: ai-fade 700ms var(--ease) both;
}

.ai-rise {
  animation: ai-rise 800ms var(--ease) both;
  animation-delay: var(--d, 0ms);
}

@keyframes ai-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes ai-rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ai-fade,
  .ai-rise,
  .ai-blob-a {
    animation: none;
  }
}

/* —— Top bar —— */
.ai-top {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--max);
  margin: 0 auto;
  padding: max(1.25rem, env(safe-area-inset-top)) 1.5rem 0;
  width: 100%;
}

.ai-logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--paper);
}

.ai-logo span {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 0.14em;
}

.ai-top-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
}

.ai-top-nav a:not(.ai-btn) {
  color: var(--paper-dim);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
}

.ai-top-nav a:not(.ai-btn):hover {
  color: var(--spark);
}

/* —— Buttons —— */
.ai-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
}

.ai-btn-spark {
  background: var(--spark);
  color: #000;
  border: 1px solid transparent;
}

.ai-btn-spark:hover {
  background: color-mix(in srgb, var(--spark) 88%, #fff);
}

.ai-btn-ghost {
  background: transparent;
  color: var(--paper);
  border: 1px solid color-mix(in srgb, var(--paper) 25%, transparent);
}

.ai-btn-ghost:hover {
  background: color-mix(in srgb, var(--paper) 10%, transparent);
}

/* —— Hero —— */
.ai-hero {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  padding: 4rem 1.5rem 3.5rem;
}

.ai-eyebrow {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--spark);
}

.ai-hero h1 {
  margin: 0.75rem 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(4rem, 16vw, 7.5rem);
  line-height: 0.9;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.ai-lede,
.ai-copy {
  margin: 1.25rem 0 0;
  max-width: 28rem;
  color: var(--paper-dim);
  font-size: 1.05rem;
  line-height: 1.6;
}

.ai-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

/* —— Sections —— */
.ai-section {
  position: relative;
  z-index: 2;
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  padding: 3.25rem 1.5rem;
  border-top: 1px solid color-mix(in srgb, var(--paper) 10%, transparent);
}

.ai-section-alt {
  background: color-mix(in srgb, var(--surface) 55%, transparent);
}

.ai-heading {
  margin: 0.65rem 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 5vw, 2.75rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1;
  color: var(--paper);
}

.ai-points {
  display: grid;
  gap: 0.85rem;
  margin-top: 1.75rem;
}

.ai-point {
  padding: 1.15rem 1.2rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--spark);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
  border-radius: var(--radius);
}

.ai-point h3,
.ai-feature h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--paper);
}

.ai-point p,
.ai-feature p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.ai-feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 0.85rem;
  margin-top: 1.75rem;
}

.ai-feature {
  padding: 1.15rem 1.15rem;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--iron) 40%, transparent);
  border-radius: var(--radius);
}

.ai-feature h3 {
  color: var(--spark);
  font-size: 1.1rem;
}

.ai-steps {
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: ai-step;
  display: grid;
  gap: 0.75rem;
  max-width: 36rem;
}

.ai-steps li {
  counter-increment: ai-step;
  position: relative;
  padding: 0.95rem 1rem 0.95rem 3.35rem;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 65%, transparent);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.95rem;
}

.ai-steps li::before {
  content: counter(ai-step);
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.7rem;
  height: 1.7rem;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0;
  color: #000;
  background: var(--spark);
  border-radius: var(--radius);
}

.ai-steps strong {
  color: var(--paper);
  font-weight: 600;
}

.ai-cta .ai-copy {
  max-width: 32rem;
}

/* —— Footer —— */
.ai-footer {
  position: relative;
  z-index: 2;
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1.5rem max(1.5rem, env(safe-area-inset-bottom));
  border-top: 1px solid color-mix(in srgb, var(--paper) 10%, transparent);
}

.ai-footer-quote {
  margin: 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--muted);
}

.ai-footer-meta {
  margin: 0.85rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--paper) 40%, transparent);
}

.ai-footer-meta a {
  color: inherit;
  text-decoration: none;
}

.ai-footer-meta a:hover {
  color: var(--spark);
}

@media (max-width: 640px) {
  .ai-top-nav a:not(.ai-btn) {
    display: none;
  }

  .ai-hero {
    padding-top: 3rem;
  }
}