/* Sustainable Oasis Press — Shared Book Infrastructure
   Location: /books/assets/css/books.css */

:root {
  --so-navy: #061b2c;
  --so-navy-2: #0b3048;
  --so-ink: #10212c;
  --so-green: #42df35;
  --so-forest: #08ad58;
  --so-orange: #ff6d00;
  --so-gold: #ffbe0b;
  --so-mist: #eff5f2;
  --so-white: #ffffff;
  --so-muted: #64757f;
  --so-line: #dce7e2;
  --so-max: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--so-ink);
  background: var(--so-white);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.58;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

.wrap {
  width: min(calc(100% - 36px), var(--so-max));
  margin-inline: auto;
}

.values {
  color: #dce8ec;
  background: var(--so-navy);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.055em;
}

.values .wrap {
  min-height: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.values-list {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  white-space: nowrap;
}

.languages {
  display: flex;
  gap: 7px;
}

.languages a {
  padding: 3px 10px;
  color: var(--so-white);
  border: 1px solid #567080;
  border-radius: 6px;
}

.languages a:hover,
.languages a:focus-visible {
  color: var(--so-green);
  border-color: var(--so-green);
}

header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--so-line);
  backdrop-filter: blur(14px);
}

header .wrap {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.brand img {
  width: 58px;
  height: 58px;
  object-fit: contain;
}

.brand span {
  display: block;
  color: var(--so-muted);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 0.78rem;
  font-weight: 800;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--so-forest);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--so-green);
  font-size: 0.72rem;
  font-weight: 950;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 30px;
  height: 2px;
  background: currentColor;
  content: "";
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.btn {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding-inline: 20px;
  border: 1px solid #587282;
  border-radius: 8px;
  font-size: 0.73rem;
  font-weight: 950;
  letter-spacing: 0.045em;
  text-transform: uppercase;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.btn.primary {
  color: #062113;
  background: var(--so-green);
  border-color: var(--so-green);
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.section {
  padding-block: 88px;
}

.section.soft {
  background: var(--so-mist);
}

footer {
  padding-block: 38px;
  color: #a9bdc6;
  background: #03131e;
  font-size: 0.8rem;
}

footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

footer strong {
  color: var(--so-white);
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

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

@media (max-width: 930px) {
  .nav {
    display: none;
  }
}

@media (max-width: 620px) {
  .values-list span:nth-child(n + 3) {
    display: none;
  }

  .values .wrap {
    padding-block: 6px;
  }

  .section {
    padding-block: 64px;
  }

  .actions {
    width: 100%;
    display: grid;
  }

  .btn {
    width: 100%;
  }

  footer .wrap {
    align-items: flex-start;
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}