/*
 * gnpng.org — launch site styles
 * Implements the GNPNG design system (claude-design-v1/).
 *
 * Plan A (licensed): Hoefler Text + Gill Sans + EB Garamond + Copperplate
 * Plan B (current):  Source Serif 4 + Source Sans 3 + EB Garamond
 *
 * House palette: ink-navy on warm-white. Carousel Red for hover only.
 * Sharp corners. 0.5pt hairline rules. Fleuron as only ornament.
 * No drop shadows. No gradients. No icons. No emoji.
 */

:root {
  /* House palette */
  --house-ink: #0D2137;
  --house-warm-white: #FAFAF5;
  --house-pier-grey: #6B7280;
  --house-sand: #F0E6D3;

  /* Press accents — minimal use */
  --carousel-red: #C23B22;
  --lake-blue: #1B6B93;
  --midway-gold: #D4A017;
  --park-green: #2D6A4F;
  --oxblood: #6B1F2A;

  /* Imprint-specific */
  --it-green: #66BB6A;
  --pp-rose: #E8A0BF;

  /* Semantic */
  --color-bg: var(--house-warm-white);
  --color-text: var(--house-ink);
  --color-text-muted: var(--house-pier-grey);
  --color-rule: var(--house-ink);
  --color-link: var(--house-ink);
  --color-link-hover: var(--carousel-red);

  /* Type stacks — Plan B */
  --font-imprint: 'EB Garamond', 'Hoefler Text', Garamond, serif;
  --font-serif: 'Source Serif 4', 'Hoefler Text', Georgia, serif;
  --font-sans: 'Source Sans 3', 'Gill Sans', 'Gill Sans MT', system-ui, sans-serif;
  --font-mono: ui-monospace, 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;
  --font-display: 'Source Sans 3', 'Copperplate', 'Gill Sans', sans-serif;

  /* Scale */
  --measure: 42rem;
  --gap-tight: 0.5rem;
  --gap-medium: 1.75rem;
  --gap-loose: 4.5rem;

  /* Weights */
  --weight-regular: 400;
  --weight-semibold: 600;

  /* Tracking */
  --tracking-caps: 0.14em;
  --tracking-wide: 0.06em;
  --tracking-mark: 0.18em;

  /* Stroke — 0.5pt hairline is the system's signature */
  --stroke-hair: 0.5pt;
}

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

html {
  font-size: 18px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-serif);
  font-weight: var(--weight-regular);
  font-size: 1rem;
  line-height: 1.6;
  font-feature-settings: 'kern', 'liga', 'calt', 'onum';
}

::selection {
  background: var(--midway-gold);
  color: var(--house-ink);
}

/* Layout */
main {
  max-width: var(--measure);
  margin: 0 auto;
  padding: clamp(3rem, 10vh, 6rem) clamp(1.5rem, 6vw, 3rem) clamp(2rem, 8vh, 4rem);
  display: grid;
  gap: var(--gap-loose);
}

/* ============================================================
   COLOPHON HEADER
   ============================================================ */

.colophon {
  text-align: center;
  padding-top: clamp(1rem, 4vh, 2rem);
}

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: var(--weight-semibold);
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  margin-bottom: var(--gap-medium);
}

.wordmark {
  font-family: var(--font-imprint);
  font-weight: var(--weight-regular);
  font-size: clamp(3rem, 11vw, 5.75rem);
  letter-spacing: 0.08em;
  line-height: 1;
  color: var(--color-text);
  margin: var(--gap-medium) 0;
  font-feature-settings: 'kern', 'liga', 'calt', 'lnum';
}

.tagline {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-top: var(--gap-medium);
  letter-spacing: 0.01em;
}
.tagline em {
  color: var(--color-text);
  font-style: italic;
}

/* Hairline rules */
hr.rule {
  border: 0;
  border-top: var(--stroke-hair) solid var(--color-rule);
  margin: 0 auto;
  height: 0;
}
hr.rule-thin {
  width: 60%;
  max-width: 18rem;
}

/* Fleuron */
.fleuron {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-text);
  margin: var(--gap-tight) 0;
  text-align: center;
}
.fleuron::before { content: "\2766"; }

/* ============================================================
   LEDE
   ============================================================ */

.lede {
  max-width: 34rem;
  margin: 0 auto;
}

.lede p {
  font-size: 1.1rem;
  line-height: 1.65;
  margin-bottom: var(--gap-medium);
}
.lede p:last-child {
  margin-bottom: 0;
  font-style: italic;
  color: var(--color-text-muted);
}

.lede a {
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-rule);
  padding-bottom: 1px;
  transition: border-bottom-color 0.18s ease, color 0.18s ease;
}
.lede a:hover {
  color: var(--color-link-hover);
  border-bottom-color: var(--color-link-hover);
}

.dropcap {
  font-family: var(--font-imprint);
  font-weight: var(--weight-regular);
  font-size: 3.4em;
  line-height: 0.85;
  float: left;
  padding: 0.05em 0.12em 0 0;
  color: var(--color-text);
}

/* ============================================================
   IMPRINTS
   ============================================================ */

.imprints {
  border-top: var(--stroke-hair) solid var(--color-rule);
  padding-top: var(--gap-loose);
}

.section-head {
  font-family: var(--font-display);
  font-weight: var(--weight-semibold);
  font-size: 0.78rem;
  letter-spacing: var(--tracking-mark);
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: var(--gap-loose);
}

.imprint-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap-medium);
}

.imprint {
  padding: var(--gap-medium);
  display: grid;
  gap: 0.35rem;
  border-top: 4px solid var(--imp-color, var(--color-text));
}

.imp-numeral {
  font-family: var(--font-display);
  font-weight: var(--weight-semibold);
  font-size: 0.7rem;
  letter-spacing: var(--tracking-mark);
  text-transform: uppercase;
  color: var(--imp-color, var(--color-text-muted));
}

.imp-mark {
  width: 100%;
  max-width: 10rem;
  height: auto;
  margin-bottom: 0.5rem;
}

.imp-name {
  font-size: 1.85rem;
  line-height: 1;
  color: var(--imp-color, var(--color-text));
  margin: 0.1rem 0;
}

.imp-motto {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.imp-desc {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-top: 0.2rem;
}

/* Literary — italic Garamond, oxblood */
.imprint-lit {
  --imp-color: #6B2024;
}
.imprint-lit .imp-name {
  font-family: var(--font-imprint);
  font-style: italic;
  font-weight: var(--weight-regular);
}

/* Scientific — Copperplate small caps, lake navy */
.imprint-sci {
  --imp-color: #1F3A5F;
}
.imprint-sci .imp-name {
  font-family: var(--font-display);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 1.4rem;
}

/* IT — monospace, dark with terminal green, scanlines */
.imprint-it {
  --imp-color: #66BB6A;
  background: #0E1A14;
  position: relative;
  overflow: hidden;
}
.imprint-it::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(0deg, rgba(0,0,0,0.25) 0 1px, transparent 1px 3px);
  pointer-events: none;
}
.imprint-it .imp-name {
  font-family: var(--font-mono);
  font-weight: var(--weight-semibold);
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  color: #F8EFD9;
  position: relative;
}
.imprint-it .imp-name .cursor {
  display: inline-block;
  background: #66BB6A;
  color: #0E1A14;
  padding: 0 0.12em;
  margin-left: 0.04em;
  animation: blink 1.05s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.imprint-it .imp-numeral { color: #66BB6A; position: relative; }
.imprint-it .imp-motto { color: rgba(102,187,106,0.85); position: relative; }
.imprint-it .imp-desc { color: rgba(102,187,106,0.7); position: relative; }
.imprint-it .imp-mark { position: relative; }

/* Ping Pong — Cooper Black, candy rose, sunshine circle, candy stripe */
.imprint-pp {
  --imp-color: #E07A8A;
  background: #E07A8A;
  position: relative;
  overflow: hidden;
  border-radius: 16px;
}
.imprint-pp::before {
  content: "";
  position: absolute;
  top: -2rem; right: -2rem;
  width: 6rem; height: 6rem;
  border-radius: 50%;
  background: #F2C94C;
}
.imprint-pp::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1.5rem;
  background: repeating-linear-gradient(45deg, #F8EFD9 0 10px, #0D2137 10px 20px);
}
.imprint-pp .imp-name {
  font-family: 'Cooper Black', 'Recoleta', serif;
  font-weight: 900;
  font-size: 1.85rem;
  color: #0D2137;
  position: relative;
}
.imprint-pp .imp-name .dot { color: #F2C94C; }
.imprint-pp .imp-numeral { color: #0D2137; position: relative; }
.imprint-pp .imp-motto { color: #0D2137; font-style: italic; position: relative; }
.imprint-pp .imp-desc { color: rgba(13,33,55,0.7); position: relative; }
.imprint-pp .imp-mark { position: relative; }

/* ============================================================
   SIGNUP
   ============================================================ */

.signup {
  border-top: var(--stroke-hair) solid var(--color-rule);
  padding-top: var(--gap-loose);
  text-align: center;
}

.signup-intro {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: var(--gap-medium);
  max-width: 28rem;
  margin-left: auto;
  margin-right: auto;
}

.book-announce {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--gap-medium);
  align-items: center;
  max-width: 32rem;
  margin: 0 auto var(--gap-medium);
}

.book-cover {
  width: 10rem;
  height: auto;
  border-radius: 4px;
  box-shadow: 0 4px 16px rgba(13, 33, 55, 0.18);
}

.book-info {
  text-align: left;
}

.book-title {
  font-family: var(--font-imprint);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.book-subtitle {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.book-launch {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.retailers {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.retailer {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-rule);
  padding-bottom: 1px;
  transition: color 0.18s ease, border-bottom-color 0.18s ease;
}
.retailer:hover {
  color: var(--color-link-hover);
  border-bottom-color: var(--color-link-hover);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.mailinglist .field {
  display: flex;
  align-items: stretch;
  gap: 1rem;
  max-width: 30rem;
  margin: 0 auto;
  flex-wrap: wrap;
  justify-content: center;
}

.mailinglist input[type='email'] {
  font-family: var(--font-serif);
  font-size: 1rem;
  background: transparent;
  border: 0;
  border-bottom: var(--stroke-hair) solid var(--color-rule);
  border-radius: 0;
  padding: 0.5rem 0;
  color: var(--color-text);
  outline: none;
  flex: 1 1 16rem;
  min-width: 0;
  text-align: center;
  transition: border-bottom-color 0.18s ease;
}
.mailinglist input[type='email']::placeholder {
  color: var(--color-text-muted);
  font-style: italic;
}
.mailinglist input[type='email']:focus {
  border-bottom-color: var(--color-text);
}

.mailinglist button {
  background: transparent;
  border: 1px solid var(--color-text);
  border-radius: 0;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-caps);
  padding: 0.7rem 1.5rem;
  color: var(--color-text);
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease;
  white-space: nowrap;
}
.mailinglist button:hover {
  background: var(--color-text);
  color: var(--color-bg);
}
.mailinglist button:focus-visible {
  outline: 2px solid var(--lake-blue);
  outline-offset: 2px;
}

.form-msg {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  margin-top: 1rem;
  min-height: 1.2em;
}
.form-msg.success { color: var(--park-green); }
.form-msg.error { color: var(--carousel-red); }

/* ============================================================
   FOOTER
   ============================================================ */

footer {
  margin-top: var(--gap-loose);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap-medium);
  padding-top: var(--gap-medium);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer-col {
  display: grid;
  gap: 0.4rem;
  align-content: start;
}
.footer-col-right { text-align: right; }

.footer-label {
  font-weight: var(--weight-semibold);
  font-size: 0.7rem;
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--gap-tight);
}

.contact {
  display: grid;
  gap: 0.3rem;
}

footer a {
  color: var(--color-link);
  text-decoration: none;
  border-bottom: 1px solid var(--color-rule);
  padding-bottom: 1px;
  transition: border-bottom-color 0.18s ease, color 0.18s ease;
  font-family: var(--font-serif);
  font-style: italic;
}
footer a:hover,
footer a:focus-visible {
  border-bottom-color: var(--color-link-hover);
  color: var(--color-link-hover);
  outline: none;
}

.locale {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.85rem;
}

.locale-roman {
  font-family: var(--font-display);
  font-weight: var(--weight-semibold);
  font-size: 0.7rem;
  letter-spacing: var(--tracking-mark);
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-top: 0.4rem;
}

.footer-mark {
  text-align: center;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-text);
  margin-top: var(--gap-loose);
}

/* ============================================================
   DARK MODE
   ============================================================ */

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: var(--house-ink);
    --color-text: var(--house-warm-white);
    --color-text-muted: #a8a89c;
    --color-rule: #4a4a40;
    --color-link: var(--house-warm-white);
    --color-link-hover: var(--carousel-red);
  }
  .imp-name-it .cursor { color: var(--house-warm-white); }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 600px) {
  html { font-size: 16px; }
  .imprint-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; text-align: left; }
  .footer-col-right { text-align: left; }
}

@media (max-width: 400px) {
  .wordmark { letter-spacing: 0.04em; font-size: 2.6rem; }
}

/* ============================================================
   PRINT
   ============================================================ */

@media print {
  body { background: white; color: black; }
  .mailinglist { display: none; }
  hr.rule { border-color: black !important; }
  .imp-name { color: black !important; }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-delay: 0ms !important;
  }
  .imp-name-it .cursor { animation: none; opacity: 1; }
  .fade-in, .colophon > * { opacity: 1 !important; transform: none !important; }
}

/* ============================================================
   ENTRANCE ANIMATIONS
   ============================================================ */

/* Colophon cascade */
.colophon > * {
  opacity: 0;
  transform: translateY(12px);
  animation: fadeUp 400ms var(--ease, cubic-bezier(0, 0, 0.2, 1)) forwards;
}
.colophon > *:nth-child(1) { animation-delay: 100ms; }
.colophon > *:nth-child(2) { animation-delay: 200ms; }
.colophon > *:nth-child(3) { animation-delay: 350ms; }
.colophon > *:nth-child(4) { animation-delay: 500ms; }
.colophon > *:nth-child(5) { animation-delay: 600ms; }
.colophon > *:nth-child(6) { animation-delay: 750ms; }

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

/* Scroll-triggered fade-in */
.lede,
.imprints,
.signup,
footer {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 400ms cubic-bezier(0, 0, 0.2, 1), transform 400ms cubic-bezier(0, 0, 0.2, 1);
}
.lede.visible,
.imprints.visible,
.signup.visible,
footer.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Imprint card stagger */
.imprint {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 350ms cubic-bezier(0, 0, 0.2, 1), transform 350ms cubic-bezier(0, 0, 0.2, 1), box-shadow 240ms ease;
}
.imprint.visible { opacity: 1; transform: translateY(0); }
.imprint:nth-child(1) { transition-delay: 0ms; }
.imprint:nth-child(2) { transition-delay: 100ms; }
.imprint:nth-child(3) { transition-delay: 200ms; }
.imprint:nth-child(4) { transition-delay: 300ms; }

/* Imprint card hover — postcard shadow lift */
.imprint:hover {
  box-shadow: 0 4px 16px rgba(13, 33, 55, 0.18), 0 1px 2px rgba(13, 33, 55, 0.12);
}

/* Book cover hover tilt */
.book-cover {
  transition: transform 300ms cubic-bezier(0, 0, 0.2, 1), box-shadow 300ms ease;
}
.book-cover:hover {
  transform: perspective(600px) rotateY(-3deg) rotateX(1deg);
  box-shadow: 0 8px 24px rgba(13, 33, 55, 0.25);
}