/* ──────────────────────────────────────────────────────────────────────────
   Foliyo Guides — guide-specific styles
   Layered on top of /styles.css. Uses design tokens from inline :root
   defined in the page (via guides-shared/nav.html wrapper).

   Token reference (defined per-page from the Foliyo brand palette):
     --bg:          #F7F5EE  (warm off-white)
     --bg-warm:     #EFEBDE  (deeper warm)
     --ink:         #0F2D21  (forest green-black)
     --ink-soft:    #244135
     --ink-mute:    #5C6E64
     --rust:        #B8541A
     --rust-deep:   #8E3F12
     --rust-tint:   #FFF2E6
     --line:        rgba(15,45,33,0.08)
     --shadow-sm:   0 2px 8px rgba(15,45,33,0.03)
     --shadow-md:   0 10px 30px -8px rgba(15,45,33,0.06)
     --font-serif:  'Instrument Serif', serif
     --font-sans:   'Geist', sans-serif
   ────────────────────────────────────────────────────────────────────────── */

:root {
  --bg:         #F7F5EE;
  --bg-warm:    #EFEBDE;
  --bg-light:   #FFFEFB;
  --ink:        #0F2D21;
  --ink-soft:   #244135;
  --ink-mute:   #5C6E64;
  --rust:       #B8541A;
  --rust-deep:  #8E3F12;
  --rust-tint:  #FFF2E6;
  --line:       rgba(15,45,33,0.08);
  --shadow-sm:  0 2px 8px rgba(15,45,33,0.03);
  --shadow-md:  0 10px 30px -8px rgba(15,45,33,0.06);
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-sans:  'Geist', ui-sans-serif, system-ui, sans-serif;
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

/* ── NAV ────────────────────────────────────────────────────────────────── */

.guides-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247,245,238,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.guides-nav .nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.guides-nav .logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
  text-decoration: none;
}

.guides-nav .logo-text {
  letter-spacing: -0.02em;
}

.guides-nav .nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.guides-nav .nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.15s;
}

.guides-nav .nav-links a:hover,
.guides-nav .nav-links a.nav-link-active {
  color: var(--ink);
}

.guides-nav .nav-cta {
  background: var(--rust);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 600;
  transition: background 0.15s, transform 0.15s;
}

.guides-nav .nav-cta:hover {
  background: var(--rust-deep);
  transform: translateY(-1px);
}

/* Dropdown */
.guides-nav .nav-dropdown {
  position: relative;
}

.guides-nav .nav-dropdown-trigger {
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0;
}

.guides-nav .nav-dropdown-chevron {
  width: 14px;
  height: 14px;
  transition: transform 0.15s;
}

.guides-nav .nav-dropdown:hover .nav-dropdown-menu,
.guides-nav .nav-dropdown-menu.open {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.guides-nav .nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 260px;
  background: var(--bg-light);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 8px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: opacity 0.15s, transform 0.15s;
}

.guides-nav .nav-dropdown-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px;
  border-radius: var(--radius-sm);
  color: var(--ink) !important;
}

.guides-nav .nav-dropdown-item:hover {
  background: var(--bg-warm);
}

.guides-nav .nav-dropdown-item-label {
  font-size: 13.5px;
  font-weight: 600;
}

.guides-nav .nav-dropdown-item-sub {
  font-size: 12px;
  color: var(--ink-mute);
  margin-top: 2px;
}

/* Hamburger */
.guides-nav .nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.guides-nav .nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: 0.2s;
}

.guides-nav .nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.guides-nav .nav-hamburger.open span:nth-child(2) { opacity: 0; }
.guides-nav .nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 768px) {
  .guides-nav .nav-hamburger { display: flex; }
  .guides-nav .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 16px;
  }
  .guides-nav .nav-links.nav-open { display: flex; }
  .guides-nav .nav-links a { padding: 10px 0; width: 100%; }
  .guides-nav .nav-cta { margin-top: 8px; display: inline-block; }
}

/* ── GUIDE LAYOUT ───────────────────────────────────────────────────────── */

.guide {
  min-height: calc(100vh - 60px);
}

.guide-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 80px;
  display: grid;
  grid-template-columns: 220px 1fr;
  grid-template-rows: auto 1fr;
  grid-template-areas:
    "breadcrumbs breadcrumbs"
    "toc         article";
  column-gap: 48px;
}

@media (max-width: 1023px) {
  .guide-layout {
    grid-template-columns: 1fr;
    grid-template-areas:
      "breadcrumbs"
      "toc"
      "article";
  }
}

/* ── BREADCRUMBS ────────────────────────────────────────────────────────── */

.breadcrumbs {
  grid-area: breadcrumbs;
  font-size: 13px;
  color: var(--ink-mute);
  margin-bottom: 32px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
}

.breadcrumbs a {
  color: var(--ink-mute);
  text-decoration: none;
  transition: color 0.15s;
}

.breadcrumbs a:hover {
  color: var(--rust);
}

.breadcrumbs .bc-sep {
  color: var(--ink-mute);
  opacity: 0.5;
  margin: 0 2px;
}

.breadcrumbs .bc-current {
  color: var(--ink-soft);
  font-weight: 500;
}

/* ── TABLE OF CONTENTS ──────────────────────────────────────────────────── */

.toc {
  grid-area: toc;
  align-self: start;
  position: sticky;
  top: 80px;
  font-size: 13px;
}

.toc:empty { display: none; }

.toc-inner {
  background: var(--bg-warm);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  border: 1px solid var(--line);
}

.toc-title {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 12px;
}

.toc ol,
.toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.toc li a {
  display: block;
  padding: 5px 8px;
  border-radius: var(--radius-sm);
  color: var(--ink-soft);
  text-decoration: none;
  line-height: 1.4;
  transition: background 0.12s, color 0.12s;
}

.toc li a:hover {
  background: var(--bg-light);
  color: var(--rust);
}

.toc li.toc-h3 a {
  padding-left: 20px;
  font-size: 12px;
  color: var(--ink-mute);
}

@media (max-width: 1023px) {
  .toc {
    position: static;
    margin-bottom: 32px;
  }
}

/* ── ARTICLE ────────────────────────────────────────────────────────────── */

.guide-article {
  grid-area: article;
  max-width: 720px;
}

.guide-article h1 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 400;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.dek {
  font-size: 18px;
  color: var(--ink-soft);
  font-style: italic;
  line-height: 1.55;
  margin-bottom: 16px;
}

.guide-meta {
  font-size: 13px;
  color: var(--ink-mute);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.guide-meta-sep {
  opacity: 0.4;
}

.guide-meta .byline strong {
  color: var(--ink-soft);
}

/* ── BODY TYPOGRAPHY ────────────────────────────────────────────────────── */

.guide-body {
  color: var(--ink);
  font-size: 16px;
  line-height: 1.75;
}

.guide-body h2 {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 400;
  color: var(--ink);
  margin-top: 48px;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
  scroll-margin-top: 80px;
}

.guide-body h3 {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin-top: 32px;
  margin-bottom: 12px;
  scroll-margin-top: 80px;
}

.guide-body h4 {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-soft);
  margin-top: 24px;
  margin-bottom: 8px;
}

.guide-body p {
  margin-bottom: 20px;
}

.guide-body ul,
.guide-body ol {
  padding-left: 24px;
  margin-bottom: 20px;
}

.guide-body li {
  margin-bottom: 8px;
}

.guide-body a {
  color: var(--rust);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.12s;
}

.guide-body a:hover {
  color: var(--rust-deep);
}

.guide-body blockquote {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 3px solid var(--rust);
  background: var(--rust-tint);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--ink-soft);
}

.guide-body table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 14px;
}

.guide-body th {
  background: var(--bg-warm);
  color: var(--ink);
  font-weight: 600;
  padding: 10px 12px;
  text-align: left;
  border-bottom: 2px solid var(--line);
}

.guide-body td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}

.guide-body tr:last-child td {
  border-bottom: none;
}

.guide-body code {
  font-family: monospace;
  font-size: 13px;
  background: var(--bg-warm);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  color: var(--rust);
}

.guide-body pre {
  background: var(--ink);
  color: #f0f0f0;
  padding: 20px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: 20px;
  font-size: 13px;
  line-height: 1.6;
}

.guide-body pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* Mid-article inline CTA callout */
.guide-body .inline-cta {
  background: var(--rust-tint);
  border: 1px solid rgba(184,84,26,0.2);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 32px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.guide-body .inline-cta p {
  margin: 0;
  font-size: 15px;
  color: var(--ink);
  font-weight: 500;
}

.guide-body .inline-cta a {
  background: var(--rust);
  color: #fff;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.15s;
}

.guide-body .inline-cta a:hover {
  background: var(--rust-deep);
  color: #fff;
}

/* ── CALCULATOR CARD ────────────────────────────────────────────────────── */

.calc-card {
  background: var(--bg-warm);
  border: 1px solid var(--line);
  border-top: 3px solid var(--rust);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin: 40px 0;
  min-height: 120px;
}

/* ── RELATED GUIDES ─────────────────────────────────────────────────────── */

.related {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.related h3 {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 20px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.related-card {
  background: var(--bg-warm);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 18px;
  text-decoration: none;
  color: var(--ink);
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
  display: block;
}

.related-card:hover {
  border-color: rgba(184,84,26,0.3);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.related-card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
  margin-bottom: 4px;
}

.related-card-section {
  font-size: 12px;
  color: var(--ink-mute);
}

@media (max-width: 768px) {
  .related-grid {
    grid-template-columns: 1fr;
  }
}

/* ── END CTA ────────────────────────────────────────────────────────────── */

.cta {
  margin-top: 56px;
  padding: 40px;
  background: var(--ink);
  border-radius: var(--radius-lg);
  text-align: center;
  color: #fff;
}

.cta h3 {
  font-family: var(--font-serif);
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 400;
  color: #fff;
  margin-bottom: 10px;
}

.cta p {
  font-size: 15px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 24px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.btn-cta {
  display: inline-block;
  background: var(--rust);
  color: #fff;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s, transform 0.15s;
}

.btn-cta:hover {
  background: var(--rust-deep);
  transform: translateY(-2px);
}

/* ── FOOTER ─────────────────────────────────────────────────────────────── */

.guides-footer {
  background: var(--ink);
  color: rgba(255,255,255,0.7);
  font-size: 13.5px;
  padding: 64px 0 32px;
  margin-top: 80px;
}

.guides-footer .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.guides-footer .footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.guides-footer .footer-brand h4 {
  font-family: var(--font-sans);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.guides-footer .footer-brand p {
  line-height: 1.6;
  max-width: 360px;
  margin-bottom: 16px;
}

.guides-footer .footer-email {
  color: rgba(255,255,255,0.6);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-size: 13px;
}

.guides-footer .footer-social {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
}

.guides-footer .footer-social-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.5;
}

.guides-footer .footer-social a {
  color: rgba(255,255,255,0.5);
  transition: color 0.15s;
  display: flex;
}

.guides-footer .footer-social a:hover {
  color: #fff;
}

.guides-footer .footer-links-col h4 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 16px;
}

.guides-footer .footer-links-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.guides-footer .footer-links-col a {
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  font-size: 13.5px;
  transition: color 0.15s;
}

.guides-footer .footer-links-col a:hover {
  color: #fff;
}

.guides-footer .footer-company {
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 20px;
}

.guides-footer .footer-company-name {
  font-weight: 600;
  color: rgba(255,255,255,0.5);
  margin-bottom: 4px;
}

.guides-footer .footer-company-address,
.guides-footer .footer-company-reg {
  font-size: 12px;
  opacity: 0.35;
  line-height: 1.6;
}

.guides-footer .footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.guides-footer .footer-corp {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12.5px;
  opacity: 0.5;
}

.guides-footer .footer-corp a {
  color: inherit;
  text-decoration: underline;
}

.guides-footer .footer-disclaimer {
  font-size: 11.5px;
  opacity: 0.3;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .guides-footer .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

/* ── UTILITY ─────────────────────────────────────────────────────────────── */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}