/*
Theme Name: PostTrail
Theme URI: https://posttrail.social
Author: PostTrail
Author URI: https://posttrail.social
Description: Classic WordPress theme for PostTrail — the faceless autopublishing product. Editorial × Swiss × Modern design system with 10 page templates, built to match the PostTrail brand: bone paper, ember coral, sage, ink black. No block editor bloat, no frameworks, no dependencies.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 7.4
License: GPL v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: posttrail
Tags: editorial, minimal, one-page, blog, custom-menu, threaded-comments, translation-ready
*/

/* =====================================================
   PostTrail — Shared Stylesheet
   Editorial × Swiss × Modern
   ===================================================== */

/* ============ RESET ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { overflow-x: hidden; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; background: none; border: none; cursor: pointer; color: inherit; }
ul { list-style: none; }

/* ============ TOKENS ============ */
:root {
  --bone: #F5F1E8;
  --bone-2: #EDE7D8;
  --bone-3: #E6DFCD;
  --ink: #1A1A1A;
  --ink-soft: #2A2A2A;
  --muted: #6B6258;
  --muted-2: #8A8276;
  --ember: #E85D2B;
  --ember-deep: #C94A1E;
  --ember-wash: #FBE4D6;
  --sage: #A8B89F;
  --sage-deep: #7E9173;
  --sage-wash: #E8EDE3;
  --line: #D9D1BE;
  --line-soft: #E6DFCE;

  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', Consolas, monospace;

  --container: 1200px;
  --container-narrow: 820px;
  --radius: 4px;
}

body {
  font-family: var(--font-body);
  background: var(--bone);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background-image:
    radial-gradient(rgba(26,26,26,0.015) 1px, transparent 1px),
    radial-gradient(rgba(26,26,26,0.012) 1px, transparent 1px);
  background-size: 24px 24px, 48px 48px;
  background-position: 0 0, 12px 12px;
}

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 32px; }
.container-narrow { width: 100%; max-width: var(--container-narrow); margin: 0 auto; padding: 0 32px; }

/* ============ TYPE SYSTEM ============ */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}
.section-marker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ember);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.section-marker::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--ember);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--ink);
}
h1 { font-size: clamp(52px, 7.6vw, 104px); line-height: 1; }
h2 { font-size: clamp(36px, 5vw, 64px); line-height: 1.02; }
h3 { font-size: clamp(24px, 2.4vw, 34px); line-height: 1.1; }
h4 { font-size: 20px; line-height: 1.2; }
.italic { font-style: italic; }
.serif-italic { font-family: var(--font-display); font-style: italic; }

p.lead {
  font-size: 20px;
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 58ch;
}
.muted { color: var(--muted); }
.ember { color: var(--ember); }
.sage { color: var(--sage-deep); }

.underline-ember {
  background-image: linear-gradient(var(--ember), var(--ember));
  background-size: 100% 6px;
  background-position: 0 92%;
  background-repeat: no-repeat;
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.005em;
  border-radius: var(--radius);
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--ink); color: var(--bone); }
.btn-primary:hover { background: var(--ember); transform: translateY(-1px); }
.btn-ghost {
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  border-radius: 0;
  padding: 6px 0;
}
.btn-ghost:hover { color: var(--ember); border-bottom-color: var(--ember); }
.btn-ember { background: var(--ember); color: var(--bone); }
.btn-ember:hover { background: var(--ember-deep); transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
}
.btn-outline:hover { background: var(--ink); color: var(--bone); }
.btn .arrow { display: inline-block; transition: transform 0.15s ease; }
.btn:hover .arrow { transform: translateX(4px); }

/* ============ NAV ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(245, 241, 232, 0.78);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.nav.scrolled { border-bottom-color: var(--line); }
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}
.logo {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 28px;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--ember);
  display: inline-flex;
  align-items: baseline;
  text-decoration: none;
}
.logo-mark {
  display: inline-flex;
  align-items: baseline;
  font-size: 28px;
  letter-spacing: -0.02em;
}
.logo:hover { color: var(--ember); opacity: 0.85; }

.nav-links {
  display: flex;
  gap: 36px;
  font-size: 14px;
  color: var(--ink-soft);
}
.nav-links a { transition: color 0.15s ease; }
.nav-links a:hover { color: var(--ember); }
.nav-links a.active { color: var(--ember); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--ink);
  color: var(--bone);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius);
  transition: background 0.15s ease;
}
.nav-cta:hover { background: var(--ember); }
@media (max-width: 820px) { .nav-links { display: none; } }

/* ============ PAGE HEADER (subpage hero) ============ */
.page-header {
  padding: 80px 0 56px;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.page-header .eyebrow { margin-bottom: 20px; }
.page-header h1 {
  font-size: clamp(48px, 6.4vw, 84px);
  margin-bottom: 22px;
  max-width: 20ch;
}
.page-header h1 .italic-ember {
  font-style: italic;
  color: var(--ember);
}
.page-header .lead {
  max-width: 56ch;
}
.page-header .meta-row {
  margin-top: 28px;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.page-header .meta-row span + span::before {
  content: '·';
  margin-right: 24px;
  color: var(--line);
}
@media (max-width: 820px) {
  .page-header { padding: 56px 0 40px; }
}

/* ============ SECTION RHYTHM ============ */
.section { padding: 96px 0; border-bottom: 1px solid var(--line); }
.section-sm { padding: 64px 0; border-bottom: 1px solid var(--line); }
.section-head { margin-bottom: 48px; max-width: 720px; }
.section-head .section-marker { margin-bottom: 18px; }
.section-head h2 { margin-bottom: 16px; }

/* ============ CALLOUTS ============ */
.callout {
  border: 1px solid var(--line);
  border-left: 3px solid var(--ember);
  background: var(--ember-wash);
  padding: 20px 24px;
  border-radius: 3px;
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink-soft);
}
.callout strong {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ember-deep);
  display: block;
  margin-bottom: 6px;
}
.callout-sage {
  background: var(--sage-wash);
  border-left-color: var(--sage-deep);
}
.callout-sage strong { color: var(--sage-deep); }
.callout-warning {
  background: #FFF5DB;
  border-left-color: #C99B2F;
}
.callout-warning strong { color: #8A6417; }

/* ============ PROSE (legal / docs) ============ */
.prose {
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-soft);
}
.prose h2 {
  font-size: 32px;
  line-height: 1.1;
  margin: 56px 0 18px;
  color: var(--ink);
  scroll-margin-top: 80px;
}
.prose h2:first-child { margin-top: 0; }
.prose h3 {
  font-size: 22px;
  line-height: 1.2;
  margin: 36px 0 12px;
  color: var(--ink);
  font-style: italic;
  color: var(--ember);
}
.prose p { margin-bottom: 16px; }
.prose ul {
  margin: 12px 0 20px;
  padding-left: 0;
}
.prose ul li {
  padding-left: 22px;
  position: relative;
  margin-bottom: 8px;
}
.prose ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--ember);
  font-family: var(--font-mono);
  font-weight: 600;
}
.prose a {
  color: var(--ember);
  border-bottom: 1px solid var(--ember-wash);
  transition: border-color 0.15s ease;
}
.prose a:hover { border-bottom-color: var(--ember); }
.prose strong { color: var(--ink); font-weight: 600; }
.prose code {
  font-family: var(--font-mono);
  background: var(--bone-2);
  padding: 2px 6px;
  font-size: 14px;
  border-radius: 2px;
}
.prose hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 48px 0;
}

/* ============ CTA BAND ============ */
.cta-band {
  background: var(--ink);
  color: var(--bone);
  padding: 80px 0;
}
.cta-band h2 {
  color: var(--bone);
  font-size: clamp(40px, 5.2vw, 72px);
  max-width: 18ch;
  margin-bottom: 24px;
}
.cta-band .lead { color: rgba(245,241,232,0.72); max-width: 52ch; margin-bottom: 32px; }
.cta-band .btn-primary { background: var(--ember); color: var(--bone); }
.cta-band .btn-primary:hover { background: var(--bone); color: var(--ink); }

/* ============ FOOTER ============ */
footer {
  background: var(--ink);
  color: rgba(245,241,232,0.72);
  padding: 72px 0 40px;
  font-size: 14px;
}
footer .logo { color: var(--ember); }
footer .logo:hover { color: var(--ember); opacity: 0.85; }
footer h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bone);
  margin-bottom: 18px;
  font-weight: 500;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 56px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(245,241,232,0.12);
}
.footer-brand p {
  max-width: 32ch;
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.55;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { transition: color 0.15s ease; }
.footer-col a:hover { color: var(--ember); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(245,241,232,0.5);
}
@media (max-width: 820px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-bottom { flex-direction: column; gap: 12px; align-items: flex-start; }
}

/* ============ UTILITIES ============ */
.fade-in { opacity: 0; transform: translateY(14px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.grid { display: grid; }
.stack-16 > * + * { margin-top: 16px; }
.stack-24 > * + * { margin-top: 24px; }
.stack-32 > * + * { margin-top: 32px; }