:root {
  --navy: #06152c;
  --navy-deep: #04101f;
  --cream: #f4ead4;
  --text: #f3f1ec;
  --muted: #c9c4b8;
  --line: rgba(243, 241, 236, 0.18);
  --input: #f7f4ee;
  --focus: #d6b36a;
}

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

html {
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--navy-deep);
  color: var(--text);
  font-family: "Source Serif 4", "Georgia", "Times New Roman", serif;
  font-optical-sizing: auto;
}

body {
  min-height: 100vh;
}

/* Fixed painting. The navy panel scrolls over it. */
.bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  background-color: #1a1712;
  background-image: url("img/prometheus-hero-1600.jpg");
  background-repeat: no-repeat;
  background-position: top center;
  background-size: cover;
  background-attachment: fixed;
  pointer-events: none;
}

@media (max-width: 800px) {
  .bg {
    background-image: url("img/prometheus-hero-800.jpg");
    background-position: 58% top;
    /* iOS ignores background-attachment: fixed; the spacer still reveals it. */
    background-attachment: scroll;
  }
}

@media (min-width: 801px) and (max-width: 1400px) {
  .bg {
    background-image: url("img/prometheus-hero-1200.jpg");
  }
}

/* Transparent window so the fixed painting is visible before the panel. */
.hero {
  position: relative;
  z-index: 1;
  height: 42vh;
  min-height: 260px;
  max-height: 520px;
}

@media (min-width: 900px) {
  .hero {
    height: 46vh;
    min-height: 340px;
  }
}

@media (max-width: 600px) {
  .hero {
    height: 34vh;
    min-height: 210px;
  }
}

.panel {
  position: relative;
  z-index: 2;
  background: var(--navy);
  min-height: 78vh;
  padding: 7.5vh 1.5rem 8vh;
}

.panel-inner {
  width: min(34rem, 100%);
  margin: 0 auto;
  text-align: center;
}

.wordmark {
  margin: 0;
  font-family: "Playfair Display", "Times New Roman", serif;
  font-weight: 500;
  font-size: clamp(2.35rem, 7.2vw, 3.85rem);
  letter-spacing: 0.045em;
  line-height: 1.12;
  color: #fff;
}

.etymology {
  margin: 1.15rem auto 0;
  max-width: 24rem;
  font-size: clamp(0.92rem, 2.1vw, 1.05rem);
  line-height: 1.55;
  color: var(--muted);
  font-weight: 400;
}

.etymology em {
  font-style: italic;
  color: var(--cream);
}

.pos {
  margin: 1.65rem 0 0;
  font-family: "Playfair Display", "Times New Roman", serif;
  font-style: italic;
  font-weight: 400;
  font-size: 1.15rem;
  color: #fff;
}

.defs {
  display: inline-block;
  width: max-content;
  max-width: min(24rem, 100%);
  margin: 1.35rem auto 0;
  padding: 0;
  list-style: none;
  text-align: left;
  counter-reset: def;
}

.defs li {
  display: grid;
  grid-template-columns: 1.35rem minmax(0, 1fr);
  column-gap: 0.35rem;
  margin: 0 0 0.95rem;
  font-size: clamp(1rem, 2.3vw, 1.12rem);
  line-height: 1.5;
  color: var(--text);
  counter-increment: def;
}

.defs li:last-child {
  margin-bottom: 0;
}

.defs li::before {
  content: counter(def) ".";
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.cta {
  margin-top: clamp(4.5rem, 14vh, 7.5rem);
}

.coming {
  margin: 0;
  font-family: "Playfair Display", "Times New Roman", serif;
  font-weight: 500;
  font-size: clamp(2rem, 5.6vw, 2.75rem);
  letter-spacing: 0.01em;
  color: #fff;
}

.signup-label {
  margin: 1.15rem 0 0.85rem;
  font-size: 1.02rem;
  color: var(--muted);
}

.signup {
  display: flex;
  align-items: stretch;
  gap: 0.55rem;
  width: min(22rem, 100%);
  margin: 0 auto;
}

.signup input[type="email"] {
  flex: 1;
  height: 2.15rem;
  border: 0;
  padding: 0 0.7rem;
  background: var(--input);
  color: #1a1a1a;
  font-family: inherit;
  font-size: 1rem;
  outline: none;
}

.signup input[type="email"]:focus {
  box-shadow: 0 0 0 2px var(--focus);
}

.signup button {
  flex: 0 0 auto;
  height: 2.15rem;
  padding: 0 0.95rem;
  border: 1px solid rgba(255, 255, 255, 0.55);
  background: transparent;
  color: #fff;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.signup button:hover,
.signup button:focus-visible {
  background: #fff;
  color: var(--navy);
}

.signup button:disabled {
  opacity: 0.55;
  cursor: default;
}

.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-status {
  min-height: 1.4em;
  margin: 0.85rem 0 0;
  font-size: 0.95rem;
  color: var(--cream);
}

.form-status.error {
  color: #e8b4b4;
}

.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;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}