/* Ammon Covino — dusk edition.
   One serif, two voices. Navy ink on cream stock; cream on night.
   Animation is transform/opacity only; GPU shaders live in static/js/shader.js. */

:root {
  --ink: #17232e;
  --ink-2: #3c4d5b;
  --ink-3: #66788a;
  --paper: #f3ede3;
  --paper-2: #e6ddcd;
  --card: #fbf8f2;
  --night: #0b1522;
  --night-2: #16283a;
  --cream: #f6efe2;
  --cream-2: #cfc4b3;
  --gold: #e6ad5e;
  --gold-2: #c9822b;
  --ember: #b4451d;

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua",
           "Century Schoolbook L", "Bitstream Charter", Charter, Georgia, "Times New Roman", serif;

  --s1: .25rem; --s2: .5rem; --s3: .75rem; --s4: 1rem; --s5: 1.5rem;
  --s6: 2rem; --s7: 3rem; --s8: 4.5rem; --s9: 7rem;
  --r: 4px; --r-lg: 10px;
  --wrap: 1180px;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --shadow: 0 1px 2px rgba(23, 35, 46, .06), 0 12px 32px -12px rgba(23, 35, 46, .28);
}

* { box-sizing: border-box; }

html { color-scheme: light; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.0625rem;
  line-height: 1.55;
  overflow-x: hidden;
}

h1, h2, h3 { font-weight: 400; line-height: 1.1; margin: 0; }
p { margin: 0; }
em { font-style: italic; }
a { color: var(--gold-2); text-underline-offset: .15em; }

:focus-visible { outline: 3px solid var(--gold-2); outline-offset: 3px; }

.skip {
  position: absolute; left: var(--s4); top: -3rem; z-index: 50;
  padding: var(--s2) var(--s4); background: var(--ink); color: var(--cream);
  border-radius: 0 0 var(--r) var(--r);
}
.skip:focus { top: 0; }

.kicker {
  font-size: .78rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ---------- Header ---------- */

.site-header {
  position: absolute; inset: 0 0 auto 0; z-index: 5;
  display: flex; justify-content: space-between; align-items: baseline;
  max-width: var(--wrap); margin: 0 auto;
  padding: var(--s5) var(--s5) 0;
  color: var(--cream);
}
.site-brand {
  font-size: 1.05rem; letter-spacing: .06em; text-transform: uppercase;
  color: inherit; text-decoration: none;
}
.site-nav { display: flex; gap: var(--s5); font-size: .92rem; }
.site-nav a { color: inherit; text-decoration: none; opacity: .82; transition: opacity .2s var(--ease); }
.site-nav a:hover { opacity: 1; text-decoration: underline; }

.is-page .site-header { position: relative; color: var(--ink); padding-bottom: var(--s5); }
.is-page main { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--s5) var(--s8); }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100dvh;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-content: end;
  background: linear-gradient(180deg, #0c1727 0%, #1c3049 46%, #2a3f5a 63%, #1a2c42 66%, #14233a 69%, #0b1522 100%);
  color: var(--cream);
}
.hero-sky, .hero-photo, .hero-scrim { position: absolute; }
.hero-sky { inset: 0; width: 100%; height: 100%; }

.hero-photo {
  top: 0; right: 0; height: 100%; width: min(62%, 84vh);
  object-fit: cover; object-position: center 30%;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 42%), linear-gradient(0deg, transparent 0, #000 34%);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(90deg, transparent 0, #000 42%), linear-gradient(0deg, transparent 0, #000 34%);
  mask-composite: intersect;
  will-change: transform;
}

.hero-scrim {
  inset: 0;
  background:
    linear-gradient(0deg, rgba(11, 21, 34, .85) 0, rgba(11, 21, 34, .35) 22%, rgba(11, 21, 34, 0) 42%),
    linear-gradient(90deg, rgba(11, 21, 34, .22) 0, rgba(11, 21, 34, 0) 45%);
}

.hero-copy {
  position: relative; z-index: 1;
  width: min(100%, var(--wrap)); margin: 0 auto;
  padding: var(--s9) var(--s5) var(--s8);
}
.hero-copy .kicker { color: var(--cream-2); margin-bottom: var(--s4); }

.hero-name {
  font-size: clamp(3.4rem, 10.5vw, 8.6rem);
  line-height: .92;
  letter-spacing: -.015em;
  margin: 0 0 var(--s5) -.04em;
  color: var(--cream);
}
.hero-name span { display: block; }
.hero-name-last { font-style: italic; padding-left: .9em; }

.hero-lede {
  max-width: 44ch;
  font-size: clamp(1rem, 1.35vw, 1.2rem);
  line-height: 1.5;
  color: var(--cream);
}

.hero-cue {
  display: inline-flex; align-items: center; gap: var(--s3);
  margin-top: var(--s6);
  font-size: .78rem; letter-spacing: .18em; text-transform: uppercase;
  color: var(--cream-2); text-decoration: none;
}
.hero-cue i { width: 2.6rem; height: 1px; background: currentColor; transform-origin: left; }
.hero-cue:hover { color: var(--cream); }

@media (prefers-reduced-motion: no-preference) {
  .hero-cue i { animation: cue 2.4s var(--ease) infinite; }
  @keyframes cue {
    0% { transform: scaleX(0); opacity: 0; }
    40% { transform: scaleX(1); opacity: 1; }
    100% { transform: scaleX(1) translateX(60%); opacity: 0; }
  }
}

@media (min-width: 760px) {
  .hero-copy { padding-bottom: var(--s9); }
  .hero-lede { padding-left: .15rem; }
}

@media (max-width: 759px) {
  .hero { align-content: end; }
  .hero-photo {
    width: 100%; height: 66%;
    object-position: center 18%;
    -webkit-mask-image: linear-gradient(0deg, transparent 0, #000 45%);
    -webkit-mask-composite: source-over;
    mask-image: linear-gradient(0deg, transparent 0, #000 45%);
    mask-composite: add;
  }
  .hero-scrim {
    background: linear-gradient(0deg, rgba(11, 21, 34, .96) 0, rgba(11, 21, 34, .7) 34%, rgba(11, 21, 34, 0) 62%);
  }
  .hero-copy { padding: var(--s8) var(--s5) var(--s8); }
  .hero-name { font-size: clamp(3.2rem, 17vw, 5rem); }
}

/* ---------- Books ---------- */

.books {
  position: relative;
  background: var(--paper);
  color: var(--ink);
}
.books-paper { position: absolute; inset: 0; width: 100%; height: 100%; }
.books-inner {
  position: relative; z-index: 1;
  max-width: var(--wrap); margin: 0 auto;
  padding: var(--s8) var(--s5) var(--s8);
}

.books-head {
  display: grid; gap: var(--s3);
  max-width: 60ch;
  margin-bottom: var(--s7);
}
.books-head h2 { font-size: clamp(2.2rem, 4.5vw, 3.4rem); letter-spacing: -.01em; }
.books-note { color: var(--ink-2); }

.shelf {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: var(--s5);
}
.shelf-item { flex: 1 1 280px; display: flex; }
.shelf-item:first-child { flex: 2 1 460px; }

.tome {
  position: relative; isolation: isolate;
  display: grid; grid-template-rows: auto auto auto 1fr auto; gap: var(--s2);
  width: 100%;
  padding: var(--s5) var(--s5) var(--s5);
  background: var(--card);
  border: 1px solid var(--paper-2);
  border-radius: var(--r-lg);
  transition: transform .45s var(--ease);
}
.tome::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  border-radius: inherit; box-shadow: var(--shadow);
  opacity: 0; transition: opacity .45s var(--ease);
}
.shelf-item:first-child .tome { border-color: #dcc7a4; background: linear-gradient(160deg, #fdfaf4, #f8efdf); }

@media (hover: hover) {
  .tome:hover { transform: translateY(-5px); }
  .tome:hover::after { opacity: 1; }
}

.tome-no {
  font-size: .78rem; letter-spacing: .18em; color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}
.tome-title { font-size: 1.45rem; line-height: 1.15; letter-spacing: -.005em; }
.shelf-item:first-child .tome-title { font-size: clamp(1.7rem, 2.6vw, 2.3rem); }
.tome-title a { color: inherit; text-decoration: none; }
.tome-title a:hover { text-decoration: underline; text-decoration-color: var(--gold-2); }
.tome-sub { font-style: italic; color: var(--ink-2); }
.tome-blurb { color: var(--ink-2); font-size: .98rem; margin-top: var(--s2); }
.tome-foot {
  display: flex; justify-content: space-between; align-items: center; gap: var(--s3);
  margin-top: var(--s4); padding-top: var(--s4);
  border-top: 1px solid var(--paper-2);
}
.tome-words { font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); }
.tome form { margin: 0; }
/* Titles without a word count have a single child here — keep it flush right. */
.tome-foot > form, .tome-foot > .tome-wip { margin-left: auto; }
.tome-foot > .free-form { margin-left: 0; flex: 1 1 100%; }

/* ---------- Buttons ---------- */

.buy-btn {
  display: inline-flex; align-items: baseline; gap: .45em;
  font: inherit; font-size: .95rem;
  background: var(--ink); color: var(--cream);
  border: 1px solid var(--ink); border-radius: var(--r);
  padding: .55rem 1rem;
  cursor: pointer; text-decoration: none;
  transition: transform .3s var(--ease), background-color .3s var(--ease);
}
.buy-btn:hover { background: var(--night-2); transform: translateY(-1px); }
.buy-btn.buy-digital { background: var(--gold-2); border-color: var(--gold-2); color: #1a1207; }
.buy-btn.buy-digital:hover { background: var(--gold); border-color: var(--gold); }
.buy-price { font-variant-numeric: tabular-nums; opacity: .85; }
.buy-btn:disabled { background: var(--paper-2); border-color: var(--paper-2); color: var(--ink-3); cursor: not-allowed; transform: none; }

.buy-buttons { display: flex; flex-wrap: wrap; gap: var(--s2); margin-top: var(--s4); }
.buy-buttons form { margin: 0; }

/* ---------- Free capture, in-progress, bundle ---------- */

.sr-only {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}

.free-form { display: flex; flex-wrap: wrap; gap: var(--s2); align-items: center; margin: 0; }
.free-email {
  font: inherit; color: var(--ink); background: var(--card);
  border: 1px solid #cbbfa9; border-radius: var(--r);
  padding: var(--s2) var(--s3); min-width: 16ch; flex: 1 1 18ch;
}
.free-email::placeholder { color: var(--ink-3); }

.tome-wip {
  font-size: .78rem; letter-spacing: .18em; text-transform: uppercase;
  color: var(--ink-3); border: 1px dashed #cbbfa9; border-radius: var(--r);
  padding: var(--s2) var(--s3);
}
.tome.is-wip { opacity: .82; }

.bundle {
  display: grid; gap: var(--s5); align-items: center;
  margin-top: var(--s9); padding-top: var(--s7);
  border-top: 1px solid #d4c7b2;
}
.bundle-copy { display: grid; gap: var(--s3); max-width: 52ch; }
.bundle-copy h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); letter-spacing: -.01em; }
.bundle-copy p { color: var(--ink-2); }
.bundle form { margin: 0; }

@media (min-width: 760px) {
  .bundle { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: var(--s8); }
  .bundle form { justify-self: end; }
}

.book-imprint { font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); }

/* ---------- Book detail & success (subpages) ---------- */

.book-detail, .success {
  max-width: 68ch;
  display: grid; gap: var(--s4);
  padding: var(--s6) 0;
}
.book-detail h1, .success h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); letter-spacing: -.01em; }
.book-subtitle { font-style: italic; color: var(--ink-2); }
.book-words { font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); }
.success .note { color: var(--ink-3); font-size: .95rem; }

/* ---------- Footer ---------- */

.site-footer {
  max-width: var(--wrap); margin: 0 auto;
  padding: var(--s7) var(--s5) var(--s7);
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: var(--s5) var(--s7);
  border-top: 1px solid var(--paper-2);
  color: var(--ink-2); font-size: .95rem;
}
.foot-id { display: grid; gap: var(--s1); }
.foot-name { font-size: 1.4rem; color: var(--ink); margin-bottom: var(--s2); }
.foot-fine { margin-top: var(--s4); font-size: .82rem; color: var(--ink-3); }
.foot-nav { display: grid; gap: var(--s2); text-align: right; }
.foot-nav a { color: inherit; text-decoration: none; }
.foot-nav a:hover { text-decoration: underline; text-decoration-color: var(--gold-2); }
.is-home .site-footer {
  border-top: 0; max-width: none;
  padding: var(--s8) max(var(--s5), calc((100% - var(--wrap)) / 2 + var(--s5)));
  background: var(--night); color: var(--cream-2);
}
.is-home .foot-name { color: var(--cream); }
.is-home .foot-fine { color: var(--cream-2); opacity: .75; }
.is-home .foot-nav a:hover { text-decoration-color: var(--gold); }
@media (max-width: 759px) { .foot-nav { text-align: left; } }
.is-page .site-footer { padding-inline: 0; max-width: calc(var(--wrap) - 2 * var(--s5)); width: calc(100% - 2 * var(--s5)); }

/* ---------- Scroll-driven motion (progressive; compositor-only) ---------- */

@supports (animation-timeline: scroll()) {
  @media (prefers-reduced-motion: no-preference) {
    .hero-copy, .hero-photo {
      animation: hero-leave linear both;
      animation-timeline: scroll(root);
      animation-range: 0 100vh;
    }
    .hero-photo { animation-name: photo-leave; }
    @keyframes hero-leave { to { transform: translateY(-14vh); opacity: 0; } }
    @keyframes photo-leave { to { transform: translateY(-9vh) scale(1.05); opacity: .6; } }

    .shelf-item {
      animation: rise linear both;
      animation-timeline: view();
      animation-range: entry 0% entry 50%;
    }
    @keyframes rise { from { transform: translateY(28px); opacity: 0; } }
  }
}