/* Hal's Bird Window: sales site for Hal's Year-Round Feeder Almanac.
   Kin to the ebooks (css in ../ebooks/css/book.css), but turned inside out:
   instead of brown ink on aged paper, cream ink on dark pine green. Brass takes
   the place of the books' barn red for rules and labels; red is kept for the
   buy button and the spot color in the woodcuts. Sized for 60+ readers. */

@import url("https://fonts.googleapis.com/css2?family=IM+Fell+English:ital@0;1&family=IM+Fell+English+SC&family=Libre+Caslon+Text:ital,wght@0,400;0,700;1,400&family=Special+Elite&display=swap");

:root {
  --pine: #17322b;
  --pine-deep: #0f241f;
  --pine-lift: #1e3d35;
  --cream: #eee4cb;            /* matches CREAM in tools/make_assets.py */
  --cream-soft: rgba(238, 228, 203, 0.74);
  --cream-faint: rgba(238, 228, 203, 0.22);
  --brass: #c9a35d;
  --spot: #cd5c42;             /* matches SPOT in tools/make_assets.py */
  --red: #8b2e1f;              /* the ebooks' barn red */
  --red-hi: #a3392a;
  --paper: #f2e9d5;
  --ink: #2a2119;
  --ink-soft: #5a4a3a;
  --display: "IM Fell English", Georgia, serif;
  --display-sc: "IM Fell English SC", Georgia, serif;
  --body: "Libre Caslon Text", Georgia, serif;
  --type: "Special Elite", "Courier New", monospace;
  --wrap: 1120px;
  --gutter: clamp(16px, 4vw, 40px);
  /* fine grain, like ink on rough stock */
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 .95 0 0 0 0 .85 0 0 0 .07 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--pine) var(--grain);
  color: var(--cream);
  font: 19px/1.65 var(--body);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--brass); text-underline-offset: 3px; }
a:hover { color: var(--cream); }
:focus-visible { outline: 2px solid var(--brass); outline-offset: 3px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.narrow { max-width: 760px; margin: 0 auto; }
.center { text-align: center; }
.nw { white-space: nowrap; }

/* ---------- shared type ---------- */
.kicker {
  font: 15px var(--display-sc); letter-spacing: 0.3em; color: var(--brass);
  margin: 0 0 10px;
}
h1, h2, h3 { font-family: var(--display); font-weight: normal; margin: 0; }
h2.title {
  font-size: clamp(34px, 5vw, 50px); line-height: 1.1; text-align: center;
}
h2.title::after {
  content: "\2767"; display: block; font-size: 22px; color: var(--spot); margin-top: 6px;
}
.lede { font: italic clamp(19px, 2.2vw, 23px)/1.5 var(--display); color: var(--cream-soft); }
.double { height: 5px; border-top: 1px solid var(--cream-faint); border-bottom: 1px solid var(--cream-faint); }

section { padding: clamp(64px, 9vw, 112px) 0; }
section + section { border-top: 1px solid rgba(238, 228, 203, 0.08); }
.band { background: var(--pine-deep) var(--grain); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 56px; padding: 14px 30px;
  background: var(--red); color: var(--cream);
  border: 1px solid rgba(238, 228, 203, 0.35);
  box-shadow: 0 0 0 4px var(--pine), 0 0 0 5px rgba(205, 92, 66, 0.55);
  font: 20px var(--display-sc); letter-spacing: 0.12em; text-decoration: none;
  cursor: pointer; transition: background .15s;
}
.btn:hover { background: var(--red-hi); color: var(--cream); }
.btn.small { min-height: 44px; padding: 8px 18px; font-size: 16px; box-shadow: none; }
.band .btn { box-shadow: 0 0 0 4px var(--pine-deep), 0 0 0 5px rgba(205, 92, 66, 0.55); }
.btn-note { font: italic 16px var(--display); color: var(--cream-soft); margin: 14px 0 0; }

/* ---------- header ---------- */
.top {
  position: sticky; top: 0; z-index: 20;
  background: rgba(15, 36, 31, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(238, 228, 203, 0.12);
}
.top .wrap { display: flex; align-items: center; gap: 24px; min-height: 68px; }
.mark {
  display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--cream);
  font: 21px var(--display-sc); letter-spacing: 0.12em; white-space: nowrap;
}
.mark img { width: 40px; }
.top nav { display: flex; gap: 22px; margin-left: auto; }
.top nav a { color: var(--cream-soft); text-decoration: none; font: 17px var(--display); }
.top nav a:hover { color: var(--cream); }
@media (max-width: 860px) { .top nav { display: none; } .top .btn { margin-left: auto; } }
.top .btn { white-space: nowrap; }
@media (max-width: 480px) {
  .top .wrap { gap: 12px; }
  .mark { gap: 6px; letter-spacing: 0.06em; }
  .mark span { font-size: 16px; }
  .mark img { width: 28px; }
  .top .btn { padding: 6px 12px; font-size: 14px; letter-spacing: 0.08em; }
}

/* ---------- hero ---------- */
.hero { padding: clamp(48px, 7vw, 96px) 0 clamp(64px, 8vw, 104px); }
.hero .wrap { display: grid; grid-template-columns: 1.2fr 0.9fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero h1 { font-size: clamp(42px, 5.6vw, 70px); line-height: 1; letter-spacing: -0.01em; }
.hero h1 em { display: block; font-size: 0.62em; color: var(--cream-soft); margin-top: 10px; }
.hero .lede { margin: 22px 0 28px; max-width: 38ch; }
.facts { display: flex; flex-wrap: wrap; gap: 8px 22px; list-style: none; padding: 0; margin: 0 0 30px;
  font: 16px var(--display-sc); letter-spacing: 0.14em; color: var(--cream-soft); }
.facts li::before { content: "\2726\00a0\00a0"; color: var(--brass); }
.price { display: flex; align-items: baseline; gap: 14px; margin: 0 0 22px; }
.price strong { font: 58px/1 var(--display); color: var(--cream); font-weight: normal; }
.price span { font: italic 19px var(--display); color: var(--cream-soft); }

.stack { position: relative; aspect-ratio: 1 / 1; max-width: 560px; justify-self: center; width: 100%; }
.stack img {
  position: absolute; width: 56%;
  box-shadow: 0 2px 0 rgba(0,0,0,.25), 0 22px 40px -12px rgba(0,0,0,.6);
  transition: transform .3s;
}
.stack img:nth-child(1) { left: 0; top: 14%; transform: rotate(-7deg); }
.stack img:nth-child(2) { right: 0; top: 12%; transform: rotate(6deg); }
.stack img:nth-child(3) { left: 22%; top: 2%; transform: rotate(-1deg); z-index: 2; }
.stack:hover img:nth-child(1) { transform: rotate(-9deg) translateX(-8px); }
.stack:hover img:nth-child(2) { transform: rotate(8deg) translateX(8px); }
@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .stack { order: -1; max-width: 420px; }
  .hero .lede { max-width: none; }
}

/* ---------- epigraph band ---------- */
.epigraph { padding: 0 0 clamp(56px, 8vw, 96px); border-top: 0; }
.epigraph img { width: 100%; max-width: 980px; margin: 0 auto; opacity: .92; }
.epigraph blockquote {
  font: italic clamp(22px, 3vw, 30px)/1.45 var(--display); text-align: center;
  max-width: 34ch; margin: 34px auto 0;
}
.epigraph cite { display: block; font: 15px var(--display-sc); font-style: normal; letter-spacing: 0.3em; color: var(--brass); margin-top: 14px; }

/* ---------- volumes ---------- */
.vols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 52px; }
.vol {
  position: relative; padding: 30px 28px 28px;
  border: 2px solid var(--cream-faint);
  outline: 1px solid var(--cream-faint); outline-offset: -8px;
  background: rgba(15, 36, 31, 0.45);
  display: flex; flex-direction: column;
}
.vol .no {
  align-self: center; background: var(--red); color: var(--cream);
  font: 13px var(--display-sc); letter-spacing: 0.26em; padding: 3px 12px 2px; margin: 0 0 18px;
}
.vol img { width: 72%; margin: 0 auto 18px; }
.vol h3 { font-size: 30px; line-height: 1.1; text-align: center; }
.vol .sub { font: italic 18px/1.4 var(--display); color: var(--cream-soft); text-align: center; margin: 8px 0 18px; }
.vol ul { list-style: none; padding: 0; margin: 0 0 18px; font-size: 17px; line-height: 1.5; }
.vol li { padding: 7px 0 7px 22px; border-top: 1px dotted var(--cream-faint); position: relative; }
.vol li::before { content: "\2726"; position: absolute; left: 0; color: var(--brass); font-size: 12px; top: 11px; }
.vol .pp { margin: auto 0 0; text-align: center; font: 15px var(--display-sc); letter-spacing: 0.24em; color: var(--brass); }
@media (max-width: 940px) { .vols { grid-template-columns: 1fr; max-width: 560px; margin-left: auto; margin-right: auto; } }

/* ---------- months ---------- */
.months { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 48px; border-left: 1px solid var(--cream-faint); border-top: 1px solid var(--cream-faint); }
.months div { padding: 18px 18px 20px; border-right: 1px solid var(--cream-faint); border-bottom: 1px solid var(--cream-faint); }
.months b { display: block; font: 13px var(--display-sc); letter-spacing: 0.26em; color: var(--brass); font-weight: normal; }
.months span { display: block; font: 26px/1.15 var(--display); margin-top: 2px; }
.months i { display: block; font: italic 17px var(--display); color: var(--cream-soft); }
@media (max-width: 860px) { .months { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .months { grid-template-columns: repeat(2, 1fr); } .months div { padding: 14px 12px; } .months span { font-size: 22px; } }
.months-note { text-align: center; margin: 28px auto 0; max-width: 62ch; color: var(--cream-soft); font-size: 17px; }

/* ---------- look inside ---------- */
.pages { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; margin-top: 52px; }
.pages figure { margin: 0; }
.pages button {
  display: block; width: 100%; padding: 0; border: 0; background: none; cursor: zoom-in;
  box-shadow: 0 18px 34px -14px rgba(0,0,0,.7); transition: transform .2s;
}
.pages button:hover { transform: translateY(-4px) rotate(-.5deg); }
.pages figcaption { font: italic 16px/1.4 var(--display); color: var(--cream-soft); text-align: center; margin-top: 12px; }
.pages figcaption b { display: block; font: 12px var(--display-sc); font-style: normal; letter-spacing: 0.24em; color: var(--brass); font-weight: normal; }
@media (max-width: 860px) { .pages { grid-template-columns: repeat(2, 1fr); } }

dialog.zoom { padding: 0; border: 0; background: none; max-width: min(92vw, 820px); max-height: 94vh; }
dialog.zoom::backdrop { background: rgba(8, 20, 17, 0.88); }
dialog.zoom img { max-height: 90vh; width: auto; margin: 0 auto; box-shadow: 0 20px 60px rgba(0,0,0,.6); }
dialog.zoom form { text-align: center; margin-top: 10px; }
dialog.zoom form button { background: none; border: 0; color: var(--cream); font: 17px var(--display-sc); letter-spacing: .2em; cursor: pointer; padding: 8px 16px; }

/* ---------- Hal's rules ---------- */
.rules { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; margin-top: 52px; }
.rule { border: 1px solid rgba(201, 163, 93, 0.5); padding: 24px 26px 22px; position: relative; }
.rule .stamp {
  position: absolute; top: -13px; left: 20px; background: var(--pine); padding: 0 10px;
  font: 13px var(--display-sc); letter-spacing: 0.26em; color: var(--brass);
}
.rule h3 { font-size: 27px; line-height: 1.2; }
.rule p { margin: 8px 0 0; color: var(--cream-soft); font-size: 17px; }
.rule .src { font: italic 15px var(--display); color: rgba(238, 228, 203, 0.55); margin-top: 10px; }
.clock { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 14px; border-top: 1px solid var(--cream-faint); }
.clock div { padding: 10px 6px 0; text-align: center; border-right: 1px dotted var(--cream-faint); }
.clock div:last-child { border-right: 0; }
.clock b { display: block; font: 13px var(--display-sc); letter-spacing: 0.12em; color: var(--brass); font-weight: normal; }
.clock span { font: 19px var(--display); }
@media (max-width: 760px) { .rules { grid-template-columns: 1fr; } }
@media (max-width: 420px) { .clock { grid-template-columns: repeat(2, 1fr); } .clock div:nth-child(2) { border-right: 0; } }

/* ---------- free card (a piece of the books' paper on the green) ---------- */
.freebie .card {
  display: grid; grid-template-columns: 0.8fr 1.2fr; gap: clamp(24px, 4vw, 48px); align-items: center;
  background: var(--paper) url("../img/paper.jpg") center / cover;
  color: var(--ink);
  padding: clamp(28px, 5vw, 56px);
  box-shadow: 0 30px 60px -20px rgba(0,0,0,.7);
  transform: rotate(-0.6deg);
}
.freebie .card > * { transform: rotate(0.6deg); }
.freebie img { width: 100%; max-width: 320px; margin: 0 auto; }
.freebie .kicker { color: var(--red); }
.freebie h2 { font-size: clamp(32px, 4.4vw, 44px); line-height: 1.1; }
.freebie p { font-size: 18px; color: var(--ink-soft); }
.freebie .type { font: 17px/1.6 var(--type); color: var(--ink); }
.signup { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }
.signup label { flex: 1 1 100%; font: 14px var(--display-sc); letter-spacing: .2em; color: var(--ink-soft); }
.signup input {
  flex: 1 1 240px; min-height: 56px; padding: 12px 16px;
  border: 1.5px solid var(--ink); background: rgba(255, 252, 244, 0.7);
  font: 19px var(--body); color: var(--ink);
}
.signup .btn { box-shadow: none; }
.signup small { flex: 1 1 100%; font: italic 15px var(--display); color: var(--ink-soft); }
.signup .done { flex: 1 1 100%; font: 17px var(--type); color: var(--red); margin: 0; }
@media (max-width: 760px) { .freebie .card { grid-template-columns: 1fr; transform: none; } .freebie .card > * { transform: none; } }

/* ---------- about ---------- */
.about .wrap { display: grid; grid-template-columns: 0.75fr 1.25fr; gap: clamp(28px, 5vw, 64px); align-items: center; }
.about img { width: 100%; max-width: 380px; margin: 0 auto; }
.about h2 { font-size: clamp(32px, 4.4vw, 44px); line-height: 1.15; margin-bottom: 16px; }
.about p { color: var(--cream-soft); }
.about p strong { color: var(--cream); font-weight: normal; font-family: var(--display-sc); letter-spacing: .08em; }
@media (max-width: 760px) { .about .wrap { grid-template-columns: 1fr; } .about img { max-width: 260px; } }

/* ---------- FAQ ---------- */
.faq { margin-top: 44px; }
.faq details { border-top: 1px solid var(--cream-faint); }
.faq details:last-child { border-bottom: 1px solid var(--cream-faint); }
.faq summary {
  list-style: none; cursor: pointer; padding: 20px 40px 20px 0; position: relative;
  font: 23px/1.3 var(--display);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 6px; top: 16px; font: 30px var(--display); color: var(--brass); }
.faq details[open] summary::after { content: "\2013"; }
.faq details p { margin: -4px 0 22px; color: var(--cream-soft); max-width: 64ch; }

/* ---------- closing ---------- */
.closing img { width: 220px; margin: 0 auto 18px; }
.closing h2 { font-size: clamp(36px, 5vw, 54px); line-height: 1.1; }
.closing .lede { margin: 14px auto 30px; max-width: 36ch; }

/* ---------- footer ---------- */
footer { background: var(--pine-deep); padding: 44px 0 52px; font-size: 15px; color: rgba(238, 228, 203, 0.6); }
footer .wrap { display: grid; gap: 14px; }
footer .mark { font-size: 18px; }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 22px; }
footer nav a { color: rgba(238, 228, 203, 0.75); }
footer p { margin: 0; max-width: 80ch; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}