/* Landing — AMP/Cursor grid inspo · black field · red epigraph */

:root {
  --bg: #000000;
  --grid: rgba(255, 255, 255, 0.06);
  --grid-strong: rgba(255, 255, 255, 0.12);
  --red: #d42b2b;
  --red-dim: rgba(212, 43, 43, 0.55);
  --ink: rgba(255, 255, 255, 0.88);
  --muted: rgba(255, 255, 255, 0.38);
  --font-lit: "Literata", "Iowan Old Style", Georgia, serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, monospace;
  --font-ui: "Inter", system-ui, sans-serif;
}

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

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
}

.site {
  min-height: 100dvh;
  display: grid;
  grid-template-rows: 1fr auto;
}

.grid-shell {
  position: relative;
  flex: 1;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-template-rows: repeat(12, 1fr);
  min-height: calc(100dvh - 120px);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: calc(100% / 12) calc(100% / 12);
}

.grid-label {
  position: absolute;
  font: 10px/1 var(--font-mono);
  letter-spacing: 0.08em;
  color: var(--muted);
  pointer-events: none;
}
.grid-label.tl { top: 8px; left: 10px; }
.grid-label.tr { top: 8px; right: 10px; }

.main {
  grid-column: 1 / -1;
  grid-row: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  padding: clamp(24px, 4vw, 56px);
  align-items: center;
}

@media (max-width: 860px) {
  .main { grid-template-columns: 1fr; gap: 40px; }
}

.epigraph {
  grid-column: 1;
  padding-right: clamp(16px, 4vw, 48px);
  border-right: 1px solid var(--grid-strong);
}

@media (max-width: 860px) {
  .epigraph {
    border-right: none;
    border-bottom: 1px solid var(--grid-strong);
    padding-right: 0;
    padding-bottom: 32px;
  }
}

.epigraph p {
  margin: 0 0 1.25em;
  font-family: var(--font-lit);
  font-size: clamp(1.15rem, 2.4vw, 1.65rem);
  line-height: 1.55;
  color: var(--red);
  letter-spacing: -0.01em;
}

.epigraph .shout {
  margin-top: 1.75em;
  font: 700 clamp(0.95rem, 2vw, 1.15rem)/1.25 var(--font-mono);
  letter-spacing: 0.08em;
  color: var(--red);
  text-transform: uppercase;
}

.signup {
  grid-column: 2;
  max-width: 420px;
  justify-self: center;
  width: 100%;
}

@media (max-width: 860px) {
  .signup { grid-column: 1; }
}

.signup h2 {
  margin: 0 0 8px;
  font: 500 11px/1.4 var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.signup .note {
  margin: 0 0 24px;
  font-size: 13px;
  color: var(--muted);
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  margin-bottom: 6px;
  font: 500 10px/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.field input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--grid-strong);
  background: rgba(255, 255, 255, 0.03);
  color: var(--ink);
  font: 15px/1.4 var(--font-ui);
  outline: none;
  transition: border-color 0.15s;
}

.field input:focus {
  border-color: var(--red-dim);
}

.field input::placeholder { color: rgba(255, 255, 255, 0.22); }

button[type="submit"] {
  width: 100%;
  margin-top: 8px;
  padding: 15px 20px;
  border: 1px solid var(--red);
  background: transparent;
  color: var(--red);
  font: 600 11px/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

button[type="submit"]:hover {
  background: var(--red);
  color: #000;
}

.mock-tag {
  margin-top: 14px;
  font: 10px/1.4 var(--font-mono);
  color: rgba(255, 255, 255, 0.25);
  letter-spacing: 0.06em;
}

.bottom-bar {
  border-top: 1px solid var(--grid-strong);
  background: #000;
  padding: 20px clamp(24px, 4vw, 56px);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px 32px;
  align-items: end;
}

@media (max-width: 640px) {
  .bottom-bar { grid-template-columns: 1fr; }
}

.book-title {
  margin: 0;
  font-family: var(--font-lit);
  font-size: clamp(1.4rem, 3.5vw, 2.2rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: #fff;
}

.countdown {
  text-align: right;
}

@media (max-width: 640px) {
  .countdown { text-align: left; }
}

.countdown-label {
  font: 500 10px/1 var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.countdown-digits {
  display: flex;
  gap: clamp(8px, 2vw, 16px);
  justify-content: flex-end;
}

@media (max-width: 640px) {
  .countdown-digits { justify-content: flex-start; }
}

.countdown-digits span {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 52px;
}

.countdown-digits em {
  font: 700 clamp(1.4rem, 4vw, 2rem)/1 var(--font-mono);
  font-style: normal;
  color: #fff;
}

.countdown-digits small {
  margin-top: 4px;
  font: 500 9px/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.release-line {
  margin: 10px 0 0;
  font: 11px/1.4 var(--font-mono);
  color: var(--muted);
}