/* Amphibian Publishing — field-guide site styles
   Warm neutrals; cover art carries color. Mobile-first. */

:root {
  --cream: #f9f7f2;
  --cream-dark: #f0ebe1;
  --parchment: #e8e0d2;
  --ink: #1d2e4d;
  --ink-soft: #3a4a66;
  --ink-muted: #5c6b82;
  --line: #c9bfae;
  --line-soft: #ddd5c6;
  --white: #ffffff;
  --accent: #2a3f5f;
  --live: #2f5d3a;
  --live-bg: #e8f0ea;
  --coming: #6b5e4a;
  --coming-bg: #f3eee6;
  --shadow: 0 8px 28px rgba(29, 46, 77, 0.08);
  --shadow-sm: 0 2px 10px rgba(29, 46, 77, 0.06);
  --radius: 10px;
  --radius-sm: 6px;
  --max: 1080px;
  --font-serif: "Libre Baskerville", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --font-sans: "Source Sans 3", "Source Sans Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
  --space: 1.25rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--ink);
}

a:focus-visible,
button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--cream);
  padding: 0.5rem 1rem;
  z-index: 100;
}

.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
}

/* —— Header —— */
.site-header {
  border-bottom: 1px solid var(--line-soft);
  background: rgba(249, 247, 242, 0.92);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
}

.brand-tag {
  font-family: var(--font-serif);
  font-size: 0.78rem;
  font-style: italic;
  color: var(--ink-muted);
  display: none;
}

@media (min-width: 720px) {
  .brand-tag {
    display: block;
  }
}

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--white);
  color: var(--ink);
  cursor: pointer;
}

.nav-toggle svg {
  width: 1.25rem;
  height: 1.25rem;
}

@media (min-width: 800px) {
  .nav-toggle {
    display: none;
  }
}

.site-nav {
  display: none;
}

.site-nav.is-open {
  display: block;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  background: var(--cream);
  border-bottom: 1px solid var(--line);
  padding: 0.75rem 1.25rem 1.25rem;
  box-shadow: var(--shadow-sm);
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.site-nav a {
  display: block;
  padding: 0.55rem 0.4rem;
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
}

.site-nav a[aria-current="page"] {
  font-weight: 650;
}

@media (min-width: 800px) {
  .site-nav {
    display: block;
    position: static;
    background: transparent;
    border: 0;
    padding: 0;
    box-shadow: none;
  }

  .site-nav ul {
    flex-direction: row;
    align-items: center;
    gap: 0.15rem 1.35rem;
  }

  .site-nav a {
    padding: 0.25rem 0;
  }
}

/* —— Layout —— */
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 2.75rem 0;
}

.section-tight {
  padding: 1.75rem 0;
}

.section-muted {
  background: var(--cream-dark);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

h1,
h2,
h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink);
  margin: 0 0 0.65em;
}

h1 {
  font-size: clamp(1.85rem, 4.5vw, 2.65rem);
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(1.35rem, 3vw, 1.75rem);
}

h3 {
  font-size: 1.15rem;
}

.lede {
  font-size: 1.12rem;
  color: var(--ink-soft);
  max-width: 38rem;
}

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 0 0 0.65rem;
}

.rule {
  width: 3rem;
  height: 2px;
  background: var(--line);
  border: 0;
  margin: 1rem 0 1.5rem;
}

/* —— Hero —— */
.hero {
  padding: 3rem 0 2.5rem;
  text-align: center;
}

.hero .lede {
  margin: 0 auto 1.5rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 1.5rem;
}

.hero-frame {
  max-width: 42rem;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  border: 1px solid var(--line);
  background:
    linear-gradient(var(--cream), var(--cream)) padding-box,
    linear-gradient(135deg, var(--line), transparent 40%) border-box;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.hero-frame::before,
.hero-frame::after {
  content: "";
  position: absolute;
  width: 0.55rem;
  height: 0.55rem;
  border: 1.5px solid var(--ink-muted);
  opacity: 0.45;
}

.hero-frame::before {
  top: 0.45rem;
  left: 0.45rem;
  border-right: 0;
  border-bottom: 0;
}

.hero-frame::after {
  bottom: 0.45rem;
  right: 0.45rem;
  border-left: 0;
  border-top: 0;
}

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.15rem;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--ink);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
  line-height: 1.2;
}

.btn-primary {
  background: var(--ink);
  color: var(--cream);
}

.btn-primary:hover {
  background: var(--accent);
  color: var(--cream);
  border-color: var(--accent);
}

.btn-secondary {
  background: transparent;
  color: var(--ink);
}

.btn-secondary:hover {
  background: var(--cream-dark);
  color: var(--ink);
}

.btn-ghost {
  background: var(--white);
  border-color: var(--line);
  color: var(--ink-soft);
}

.btn-ghost:hover {
  border-color: var(--ink-muted);
  color: var(--ink);
}

.btn-coming,
.btn[aria-disabled="true"],
.btn.is-coming {
  background: var(--coming-bg);
  border-color: var(--line);
  color: var(--coming);
  cursor: default;
  pointer-events: none;
  opacity: 0.95;
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 0.5rem 0.85rem;
  font-size: 0.85rem;
}

/* —— Badges —— */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.55rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 999px;
  border: 1px solid transparent;
}

.badge-live {
  background: var(--live-bg);
  color: var(--live);
  border-color: #c5d9cb;
}

.badge-coming {
  background: var(--coming-bg);
  color: var(--coming);
  border-color: var(--line);
}

/* —— Journal cards —— */
.card-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.35rem;
  }
}

.journal-card {
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.journal-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.journal-card .cover {
  aspect-ratio: 2640 / 1688;
  background: var(--cream-dark);
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
}

.journal-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: right center;
}

.journal-card .card-body {
  padding: 1.15rem 1.15rem 1.35rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 0.65rem;
}

.journal-card .card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.journal-card h3 {
  margin: 0;
  font-size: 1.2rem;
}

.journal-card h3 a {
  text-decoration: none;
  color: inherit;
}

.journal-card h3 a:hover {
  color: var(--accent);
}

.journal-card .card-blurb {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0;
  flex: 1;
}

.journal-card .card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.35rem;
}

/* —— PDP —— */
.pdp {
  padding: 2rem 0 3rem;
}

.pdp-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 860px) {
  .pdp-grid {
    grid-template-columns: 1.05fr 1fr;
    align-items: start;
    gap: 2.5rem;
  }
}

.pdp-cover {
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.pdp-cover img {
  width: 100%;
  display: block;
}

.pdp-meta .badge {
  margin-bottom: 0.75rem;
}

.pdp-meta .lede {
  margin-bottom: 1rem;
}

.credential {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--ink-muted);
  margin: 0 0 1.5rem;
}

.format-stack {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin: 1.5rem 0;
}

.format-option {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  display: grid;
  gap: 0.65rem;
}

@media (min-width: 520px) {
  .format-option {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

.format-option h3 {
  margin: 0 0 0.2rem;
  font-size: 1.05rem;
}

.format-option .format-note {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-muted);
}

.format-option .format-price {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  margin-right: 0.5rem;
}

.format-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.isbn-note {
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin-top: 1rem;
}

/* —— Formats explainer —— */
.format-cards {
  display: grid;
  gap: 1.15rem;
}

@media (min-width: 720px) {
  .format-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

.format-card {
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 1.35rem 1.25rem;
  box-shadow: var(--shadow-sm);
}

.format-card .icon {
  width: 2.25rem;
  height: 2.25rem;
  border: 1.5px solid var(--line);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.85rem;
  font-size: 0.85rem;
  color: var(--ink-muted);
}

.format-card h3 {
  margin-bottom: 0.4rem;
}

.format-card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.format-card .where {
  margin-top: 0.85rem;
  font-size: 0.8rem;
  font-weight: 650;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.note-callout {
  margin-top: 1.75rem;
  padding: 1rem 1.15rem;
  background: var(--cream-dark);
  border-left: 3px solid var(--line);
  font-size: 0.95rem;
  color: var(--ink-soft);
}

/* —— About / Contact —— */
.prose {
  max-width: 40rem;
}

.prose p {
  margin: 0 0 1rem;
  color: var(--ink-soft);
}

.prose strong {
  color: var(--ink);
  font-weight: 650;
}

.contact-block {
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  max-width: 28rem;
}

.contact-block a {
  font-weight: 600;
}

.lead-magnet {
  margin-top: 2rem;
  padding: 1.35rem 1.25rem;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.5);
  max-width: 32rem;
}

.lead-magnet h3 {
  margin-bottom: 0.4rem;
}

.lead-magnet p {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

/* —— Footer —— */
.site-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--line);
  background: var(--cream-dark);
  padding: 2.5rem 0 2rem;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 700px) {
  .footer-inner {
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 2rem;
  }
}

.footer-brand .brand-mark {
  margin-bottom: 0.4rem;
}

.footer-brand p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-muted);
  max-width: 22rem;
}

.footer-col h4 {
  margin: 0 0 0.65rem;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col li {
  margin-bottom: 0.35rem;
}

.footer-col a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.footer-col a:hover {
  color: var(--ink);
}

.footer-bottom {
  max-width: var(--max);
  margin: 1.75rem auto 0;
  padding: 1.25rem 1.25rem 0;
  border-top: 1px solid var(--line-soft);
  font-size: 0.8rem;
  color: var(--ink-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  justify-content: space-between;
}

/* —— Misc —— */
.soft-note {
  font-size: 0.9rem;
  color: var(--ink-muted);
  text-align: center;
  margin: 0.5rem auto 0;
  max-width: 36rem;
}

.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;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .journal-card {
    transition: none;
  }
  .journal-card:hover {
    transform: none;
  }
}