/* ============ Base + Reset ============ */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html { font-size: 16px; }
body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, sans-serif;
  font-weight: 400;
  line-height: 1.5;
  color: #fafaf9;
  background: #0a0a0a;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
button { cursor: pointer; font: inherit; }
input { font: inherit; }

/* Screen-reader-only utility */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}

/* ============ Design tokens ============ */
:root {
  --color-bg: #0a0a0a;
  --color-text: #ffffff;
  --color-text-soft: rgba(255, 255, 255, 0.85);
  --color-text-muted: rgba(255, 255, 255, 0.55);
  --color-accent: #fcd34d;
  --color-border: rgba(255, 255, 255, 0.4);
  --color-field-bg: rgba(255, 255, 255, 0.08);
  --color-cta-bg: #fafaf9;
  --color-cta-text: #0a0a0a;

  --font-display: 'Oswald', Impact, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, Segoe UI, sans-serif;

  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 36px;
  --space-xl: 48px;

  --hero-padding: 60px 32px;
}

/* ============ Hero layout ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--hero-padding);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('assets/hero.jpg');
  background-size: cover;
  background-position: center;
  filter: grayscale(0.3) brightness(0.55) contrast(1.15) saturate(0.8);
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse at 50% 40%, rgba(0,0,0,0) 0%, rgba(10,10,10,0.5) 70%, rgba(10,10,10,0.85) 100%),
    linear-gradient(180deg, rgba(10,10,10,0.3) 0%, rgba(10,10,10,0.4) 50%, rgba(10,10,10,0.6) 100%);
}

.hero-grain {
  position: absolute;
  inset: 0;
  z-index: 2;
  opacity: 0.05;
  mix-blend-mode: overlay;
  pointer-events: none;
  background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

.hero-inner {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 680px;
  width: 100%;
}

/* ============ Hero typography ============ */
.eyebrow {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 38px;
  /* compensate for letter-spacing shifting text off-center */
  padding-left: 0.5em;
}

.name {
  font-family: var(--font-display);
  font-size: clamp(56px, 10vw, 112px);
  font-weight: 500;
  line-height: 0.92;
  letter-spacing: 0.015em;
  color: var(--color-text);
  text-transform: uppercase;
  margin-bottom: 22px;
  text-shadow: 0 2px 40px rgba(0, 0, 0, 0.5);
}

.name span {
  display: block;
}

.divider {
  width: 56px;
  height: 2px;
  background: var(--color-text);
  margin: 16px 0 28px;
}

.tagline {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 300;
  color: var(--color-text-soft);
  line-height: 1.65;
  max-width: 480px;
  margin-bottom: 36px;
}

/* ============ Signup form ============ */
.signup {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  width: 100%;
  max-width: 440px;
  margin-bottom: 8px;
}

.signup input[type="email"] {
  flex: 1;
  min-width: 0;
  height: 50px;
  background: var(--color-field-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 0 18px;
  font-family: var(--font-body);
  font-size: 14px;
  border-radius: 2px;
  outline: none;
  transition: border-color 0.15s;
}

.signup input[type="email"]::placeholder {
  color: var(--color-text-muted);
}

.signup input[type="email"]:focus {
  border-color: var(--color-accent);
}

.signup button {
  height: 50px;
  padding: 0 28px;
  background: var(--color-cta-bg);
  color: var(--color-cta-text);
  border: 0;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border-radius: 2px;
  white-space: nowrap;
  transition: opacity 0.15s, transform 0.1s;
}

.signup button:hover { opacity: 0.9; }
.signup button:active { transform: translateY(1px); }
.signup button:disabled { opacity: 0.5; cursor: not-allowed; }

.form-status {
  flex-basis: 100%;
  font-size: 13px;
  color: var(--color-text-soft);
  min-height: 20px;
  margin-top: 10px;
  text-align: center;
}

.form-status.error { color: #fca5a5; }
.form-status.success { color: var(--color-accent); }

/* ============ Social links ============ */
.social {
  margin-top: 44px;
}

.social ul {
  display: flex;
  gap: 22px;
  list-style: none;
  flex-wrap: wrap;
  justify-content: center;
}

.social a {
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.social a:hover,
.social a:focus {
  color: var(--color-text);
}

/* ============ Responsive ============ */
@media (max-width: 767px) {
  :root {
    --hero-padding: 40px 20px;
  }

  .eyebrow {
    font-size: 10px;
    letter-spacing: 0.4em;
    margin-bottom: 28px;
  }

  .name {
    margin-bottom: 16px;
  }

  .tagline {
    font-size: 15px;
    margin-bottom: 28px;
  }

  .signup {
    flex-direction: column;
    gap: 8px;
  }

  .signup button {
    width: 100%;
  }

  .social {
    margin-top: 32px;
  }

  .social ul {
    gap: 16px;
  }

  .social a {
    font-size: 10px;
    letter-spacing: 0.25em;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}