/* ============================================================
   RURAL SYSTEMS — Design System
   ruralsystems.org
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=Inter:wght@300;400;500;600;700&display=swap');

/* --- Custom Properties --- */
:root {
  /* Colors — Earth & Gold */
  --bg-primary: #0D0F0E;
  --bg-secondary: #1A1D1C;
  --bg-tertiary: #232726;
  --bg-card: #1E2221;
  --bg-card-hover: #252928;

  --accent-gold: #C9A84C;
  --accent-gold-dim: rgba(201, 168, 76, 0.15);
  --accent-gold-glow: rgba(201, 168, 76, 0.3);
  --accent-green: #4A7C59;
  --accent-green-dim: rgba(74, 124, 89, 0.15);
  --accent-terracotta: #C0613A;

  --text-primary: #F0EDE6;
  --text-secondary: #A89F91;
  --text-muted: #6B6560;
  --text-on-gold: #1A1D1C;

  --border-subtle: rgba(240, 237, 230, 0.08);
  --border-medium: rgba(240, 237, 230, 0.15);

  /* Typography */
  --font-heading: 'DM Serif Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;
  --space-4xl: 12rem;

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --max-width-text: 680px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease-out;

  /* Shadows */
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-elevated: 0 8px 48px rgba(0, 0, 0, 0.4);

  /* Header */
  --header-height: 72px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-weight: 400;
  overflow-x: hidden;
}

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

a {
  color: var(--accent-gold);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--text-primary);
}

::selection {
  background: var(--accent-gold);
  color: var(--text-on-gold);
}

/* --- Typography --- */
h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
}

p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 65ch;
}

.text-large {
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  line-height: 1.8;
}

.text-small {
  font-size: 0.875rem;
}

.text-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-gold);
}

.text-gold { color: var(--accent-gold); }
.text-green { color: var(--accent-green); }
.text-white { color: var(--text-primary); }
.text-muted { color: var(--text-muted); }

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

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

section {
  padding: var(--space-3xl) 0;
  position: relative;
}

.section--dark {
  background-color: var(--bg-secondary);
}

.section--accent {
  background-color: var(--bg-tertiary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

/* --- Header / Navigation --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: background-color var(--transition-slow), box-shadow var(--transition-slow);
  background-color: transparent;
}

.site-header.scrolled {
  background-color: rgba(13, 15, 14, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.logo {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-primary);
  text-decoration: none;
}

.logo:hover {
  color: var(--accent-gold);
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-desktop a {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  letter-spacing: 0.02em;
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--text-primary);
}

.nav-desktop .nav-cta {
  background: var(--accent-gold);
  color: var(--text-on-gold);
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.nav-desktop .nav-cta:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
  transform: translateY(-1px);
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1100;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav Overlay */
.nav-mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(13, 15, 14, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1050;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
}

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

.nav-mobile a {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav-mobile a:hover {
  color: var(--accent-gold);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(13, 15, 14, 0.55) 0%,
    rgba(13, 15, 14, 0.35) 40%,
    rgba(13, 15, 14, 0.65) 70%,
    rgba(13, 15, 14, 0.95) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: var(--space-xl) var(--space-md);
}

.hero h1 {
  margin-bottom: var(--space-md);
}

.hero .subtitle {
  font-family: var(--font-body);
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  font-weight: 300;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-xl);
}

.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0.5;
  animation: pulse-down 2s ease-in-out infinite;
}

.scroll-indicator span {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.scroll-indicator svg {
  width: 20px;
  height: 20px;
  stroke: var(--text-secondary);
  fill: none;
  stroke-width: 2;
}

@keyframes pulse-down {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.5; }
  50% { transform: translateX(-50%) translateY(8px); opacity: 1; }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.85rem 2rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-base);
  letter-spacing: 0.03em;
}

.btn--primary {
  background: var(--accent-gold);
  color: var(--text-on-gold);
}

.btn--primary:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(201, 168, 76, 0.25);
}

.btn--secondary {
  background: transparent;
  color: var(--accent-gold);
  border: 1px solid var(--accent-gold);
}

.btn--secondary:hover {
  background: var(--accent-gold-dim);
  color: var(--text-primary);
  border-color: var(--text-primary);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--text-primary);
  padding: 0.5rem 0;
  border-radius: 0;
}

.btn--ghost:hover {
  color: var(--accent-gold);
}

.btn--ghost .arrow {
  transition: transform var(--transition-fast);
}

.btn--ghost:hover .arrow {
  transform: translateX(4px);
}

/* --- Cards --- */
.card-grid {
  display: grid;
  gap: var(--space-md);
}

.card-grid--4 { grid-template-columns: repeat(4, 1fr); }
.card-grid--3 { grid-template-columns: repeat(3, 1fr); }
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-medium);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  margin-bottom: var(--space-md);
  font-size: 1.5rem;
  background: var(--accent-gold-dim);
  color: var(--accent-gold);
}

.card-icon--green {
  background: var(--accent-green-dim);
  color: var(--accent-green);
}

.card h4 {
  margin-bottom: var(--space-xs);
}

.card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* --- Stats Strip --- */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  text-align: center;
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.stat-item .stat-number {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--accent-gold);
  display: block;
}

.stat-item .stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* --- Blockquote / Pull Quote --- */
blockquote {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  color: var(--text-primary);
  border-left: 3px solid var(--accent-gold);
  padding-left: var(--space-lg);
  margin: var(--space-xl) 0;
  max-width: 55ch;
  line-height: 1.5;
}

blockquote cite {
  display: block;
  font-family: var(--font-body);
  font-style: normal;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: var(--space-sm);
}

/* --- Section Headers --- */
.section-header {
  margin-bottom: var(--space-xl);
}

.section-header .text-label {
  margin-bottom: var(--space-sm);
  display: block;
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  font-size: 1.1rem;
  max-width: 60ch;
}

/* --- Audience Columns --- */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.audience-col {
  padding: var(--space-xl) var(--space-lg);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  transition: border-color var(--transition-base);
}

.audience-col:hover {
  border-color: var(--accent-gold);
}

.audience-col h3 {
  font-size: 1.3rem;
}

.audience-col p {
  flex: 1;
}

/* --- Founder Section --- */
.founder-section {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-2xl);
  align-items: center;
}

.founder-visual {
  aspect-ratio: 3/4;
  background: var(--bg-tertiary);
  border-radius: 12px;
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.founder-monogram {
  font-family: var(--font-heading);
  font-size: 6rem;
  color: var(--accent-gold);
  opacity: 0.6;
}

.founder-text h3 {
  margin-bottom: var(--space-xs);
}

.founder-text .founder-title {
  color: var(--accent-gold);
  font-size: 0.9rem;
  margin-bottom: var(--space-lg);
}

/* --- Full-width CTA Section --- */
.cta-section {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.cta-section .hero-bg::after {
  background: linear-gradient(
    180deg,
    rgba(13, 15, 14, 0.85) 0%,
    rgba(13, 15, 14, 0.6) 50%,
    rgba(13, 15, 14, 0.85) 100%
  );
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-content h2 {
  margin-bottom: var(--space-md);
}

.cta-content p {
  margin: 0 auto var(--space-xl);
  text-align: center;
}

/* --- Footer --- */
.site-footer {
  padding: var(--space-2xl) 0 var(--space-xl);
  border-top: 1px solid var(--border-subtle);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: var(--space-sm);
  max-width: 35ch;
}

.footer-links {
  display: flex;
  gap: var(--space-xl);
}

.footer-links-group h5 {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}

.footer-links-group a {
  display: block;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.footer-links-group a:hover {
  color: var(--accent-gold);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.footer-social a {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-social a:hover {
  color: var(--accent-gold);
}

/* --- Page Header (for inner pages) --- */
.page-hero {
  padding-top: calc(var(--header-height) + var(--space-3xl));
  padding-bottom: var(--space-2xl);
  text-align: center;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.page-hero .text-label {
  margin-bottom: var(--space-sm);
  display: block;
}

.page-hero h1 {
  margin-bottom: var(--space-md);
}

.page-hero p {
  margin: 0 auto;
  text-align: center;
}

/* --- Content Sections for inner pages --- */
.content-section {
  padding: var(--space-2xl) 0;
}

.content-section + .content-section {
  border-top: 1px solid var(--border-subtle);
}

.content-section h2 {
  margin-bottom: var(--space-lg);
}

.content-section h3 {
  margin-bottom: var(--space-md);
}

.content-section p + p {
  margin-top: var(--space-md);
}

.content-section ul, .content-section ol {
  color: var(--text-secondary);
  padding-left: var(--space-md);
  margin-top: var(--space-sm);
}

.content-section li {
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

.content-section li::marker {
  color: var(--accent-gold);
}

/* --- Two Column Layout --- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.two-col--wide-right {
  grid-template-columns: 1fr 1.5fr;
}

.two-col--wide-left {
  grid-template-columns: 1.5fr 1fr;
}

/* --- Tables --- */
.styled-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  font-size: 0.95rem;
}

.styled-table thead th {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  border-bottom: 2px solid var(--accent-gold);
}

.styled-table tbody td {
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  vertical-align: top;
}

.styled-table tbody tr:hover td {
  background: var(--bg-card);
  color: var(--text-primary);
}

/* --- Form Styles --- */
.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-medium);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px var(--accent-gold-dim);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* --- Gold Line Accent --- */
.gold-line {
  display: block;
  width: 60px;
  height: 3px;
  background: var(--accent-gold);
  margin-bottom: var(--space-lg);
}

/* --- Divider --- */
.divider {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: var(--space-xl) 0;
}

/* --- Scroll Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; }
  .two-col--wide-right,
  .two-col--wide-left { grid-template-columns: 1fr; }
  .founder-section { grid-template-columns: 1fr; }
  .audience-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root {
    --space-3xl: 5rem;
    --space-4xl: 7rem;
  }

  .nav-desktop { display: none; }
  .nav-toggle { display: block; }

  .card-grid--4,
  .card-grid--3,
  .card-grid--2 { grid-template-columns: 1fr; }

  .stats-strip {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer-inner { flex-direction: column; }
  .footer-links { flex-direction: column; gap: var(--space-lg); }
  .footer-bottom { flex-direction: column; gap: var(--space-sm); text-align: center; }

  .hero { min-height: 90vh; }

  blockquote {
    padding-left: var(--space-md);
  }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-sm); }
  .btn { padding: 0.75rem 1.5rem; font-size: 0.85rem; }
}