/* ==========================================================================
   GramWise.net — Evergreen Pages Stylesheet
   Mirrors the gram-wise.com design system (Brand System Standard v1.0)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400..700;1,9..40,400..700&family=DM+Serif+Display:ital@0;1&display=swap');

:root {
  /* Core Color Palette */
  --color-primary: #2C5A3E;
  --color-primary-hover: #224731;
  --color-accent: #7052A8;
  --color-accent-hover: #5B418A;
  --color-secondary: #EAF1EC;
  --color-muted-surface: #F5F4F1;
  --color-ink: #1C1C1A;
  --color-muted-text: #767670;
  --color-white: #FFFFFF;

  /* Borders and Dividers */
  --color-border: rgba(28, 28, 26, 0.14);
  --color-border-subtle: rgba(28, 28, 26, 0.08);
  --color-border-focus: #2C5A3E;

  /* Typography Tokens */
  --font-serif: 'DM Serif Display', Georgia, serif;
  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;

  /* Layout & Sizing */
  --site-max-width: 1140px;
  --text-max-width: 68ch;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
}

/* Reset & Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-ink);
  background-color: var(--color-muted-surface);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

a:hover, a:focus-visible {
  color: var(--color-accent);
}

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Typography Scale */
h1, h2, h3, h4, .serif-heading {
  font-family: var(--font-serif);
  font-weight: 400;
  color: var(--color-primary);
  line-height: 1.2;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

@media (min-width: 768px) {
  h1 {
    font-size: 3.125rem;
  }
}

h2 {
  font-size: 1.75rem;
  margin-top: 2rem;
  margin-bottom: 0.875rem;
}

@media (min-width: 768px) {
  h2 {
    font-size: 2rem;
  }
}

h3 {
  font-size: 1.35rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1.25rem;
}

p:last-child {
  margin-bottom: 0;
}

.lead-text {
  font-size: 1.25rem;
  line-height: 1.5;
  color: var(--color-ink);
  font-weight: 400;
}

.metadata-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted-text);
}

/* Container & Grid */
.container {
  width: 100%;
  max-width: var(--site-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.main-content {
  flex: 1 0 auto;
  padding-top: 2.5rem;
  padding-bottom: 4rem;
}

/* ==========================================================================
   Global Header
   ========================================================================== */
.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
  gap: 1.5rem;
}

.brand-link {
  text-decoration: none;
  display: flex;
  align-items: baseline;
  gap: 0.625rem;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.625rem;
  color: var(--color-primary);
  line-height: 1;
}

.brand-descriptor {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-muted-text);
  border-left: 1px solid var(--color-border);
  padding-left: 0.625rem;
  display: none;
}

@media (min-width: 640px) {
  .brand-descriptor {
    display: inline-block;
  }
}

/* Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.25rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-ink);
  text-decoration: none;
  padding: 0.25rem 0.125rem;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.nav-link:hover, .nav-link:focus {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

.nav-link.active {
  color: var(--color-primary);
  font-weight: 600;
  border-bottom-color: var(--color-primary);
}

/* CTA link (Compare Prices → SPA root) */
.consumer-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-sm);
  background-color: var(--color-secondary);
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid rgba(44, 90, 62, 0.2);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.consumer-link:hover, .consumer-link:focus {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.consumer-link svg {
  width: 12px;
  height: 12px;
  fill: currentColor;
}

.consumer-link-demo {
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1.4;
  padding: 0.05rem 0.3rem;
  border-radius: var(--radius-pill);
  background-color: var(--color-accent);
  color: var(--color-white);
}

/* Secondary cross-link (Market Reports → gram-wise.com) */
.crosslink {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-muted-text);
  text-decoration: none;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.crosslink:hover, .crosslink:focus {
  color: var(--color-primary);
}

.crosslink svg {
  width: 10px;
  height: 10px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  cursor: pointer;
  color: var(--color-ink);
}

@media (max-width: 860px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.25rem 1.5rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
    gap: 1rem;
  }

  .site-nav.open {
    display: flex;
  }

  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: 0.875rem;
  }

  .nav-link {
    width: 100%;
    padding: 0.5rem 0;
  }

  .consumer-link {
    width: 100%;
    justify-content: center;
    padding: 0.625rem;
  }

  .crosslink {
    width: 100%;
    justify-content: center;
    padding: 0.5rem 0;
  }
}

/* ==========================================================================
   Cards & Surfaces
   ========================================================================== */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.card-pale {
  background-color: var(--color-secondary);
  border: 1px solid rgba(44, 90, 62, 0.2);
}

.card-muted {
  background-color: var(--color-muted-surface);
  border: 1px solid var(--color-border);
}

/* Section Header */
.section-header {
  margin-bottom: 1.5rem;
}

.section-kicker {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 0.375rem;
}

/* ==========================================================================
   Pull Quotes / Maxims
   ========================================================================== */
.callout-quote {
  border-left: 3px solid var(--color-primary);
  background-color: var(--color-secondary);
  padding: 1.125rem 1.375rem;
  margin: 1.5rem 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.callout-quote p {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: 1.4;
  color: var(--color-primary);
  margin: 0;
}

/* ==========================================================================
   Editorial Layout Structure
   ========================================================================== */
.editorial-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media (min-width: 960px) {
  .editorial-layout {
    grid-template-columns: 240px 1fr;
    gap: 3.5rem;
    align-items: start;
  }
}

.sidebar-nav {
  position: sticky;
  top: 5.5rem;
  background-color: var(--color-white);
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.sidebar-title {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted-text);
  margin-bottom: 0.75rem;
}

.sidebar-menu {
  list-style: none;
}

.sidebar-menu li {
  margin-bottom: 0.5rem;
}

.sidebar-menu a {
  font-size: 0.875rem;
  color: var(--color-ink);
  text-decoration: none;
  display: block;
  padding: 0.25rem 0.375rem;
  border-radius: var(--radius-sm);
}

.sidebar-menu a:hover, .sidebar-menu a:focus {
  background-color: var(--color-secondary);
  color: var(--color-primary);
}

.editorial-prose {
  max-width: var(--text-max-width);
}

.editorial-prose section {
  margin-bottom: 2.75rem;
  scroll-margin-top: 5rem;
}

.editorial-prose ul, .editorial-prose ol {
  margin-top: 0.75rem;
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.editorial-prose li {
  margin-bottom: 0.5rem;
}

/* ==========================================================================
   Tables
   ========================================================================== */
.table-wrapper {
  width: 100%;
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  -webkit-overflow-scrolling: touch;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9375rem;
}

table.data-table th {
  background-color: var(--color-secondary);
  color: var(--color-primary);
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

table.data-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border-subtle);
  color: var(--color-ink);
}

table.data-table tr:last-child td {
  border-bottom: none;
}

table.data-table tr:hover td {
  background-color: #FAF9F6;
}

/* ==========================================================================
   Global Footer
   ========================================================================== */
.site-footer {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  padding-top: 3rem;
  padding-bottom: 2.5rem;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand-name {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.footer-mission {
  font-size: 0.875rem;
  color: var(--color-muted-text);
  line-height: 1.5;
  max-width: 44ch;
}

.footer-heading {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted-text);
  margin-bottom: 0.875rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--color-ink);
  text-decoration: none;
}

.footer-links a:hover, .footer-links a:focus {
  color: var(--color-primary);
  text-decoration: underline;
}

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.8125rem;
  color: var(--color-muted-text);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer-legal-notice {
  line-height: 1.4;
}

/* ==========================================================================
   Age Gate Overlay — matches SPA semantics
   ========================================================================== */
.age-gate {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background-color: var(--color-primary);
}

.age-gate__panel {
  width: 100%;
  max-width: 420px;
  padding: 2.75rem 2rem 2.5rem;
  background-color: var(--color-white);
  border-radius: 18px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.35);
  text-align: center;
}

.age-gate__logo {
  display: block;
  width: 92px;
  height: auto;
  margin: 0 auto 1.25rem;
}

.age-gate__panel h1 {
  margin: 0 0 0.75rem;
  font-size: 1.8rem;
  line-height: 1.2;
  color: var(--color-ink);
}

.age-gate__panel p {
  margin: 0 auto 1.75rem;
  max-width: 30ch;
  color: var(--color-muted-text);
  font-size: 0.95rem;
  line-height: 1.45;
}

.age-gate__panel button {
  padding: 0.8rem 2rem;
  border: none;
  border-radius: 10px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.age-gate__panel button:hover {
  background-color: var(--color-primary-hover);
}

/* Hide page content behind the gate until affirmed */
body.age-gated .main-content,
body.age-gated .site-footer {
  display: none;
}

body.age-gated .site-header {
  display: none;
}