/* ==========================================================================
   exploresolar.com - Global Styles
   ========================================================================== */

/* --- 1. CSS Variables & Design Tokens --- */
:root {
  /* Color Palette */
  --sun-gold: #F5A623;
  --sun-amber: #E8912D;
  --desert-sand: #FFF8F0;
  --terracotta: #C75B39;
  --night-sky: #1A1B2E;
  --twilight: #2D2E4A;
  --sage: #8FA98B;
  --pale-sage: #E8F0E6;
  --cream: #FFFDF9;

  /* Text Colors */
  --text-primary: #1A1B2E;
  --text-secondary: #5A5B70;
  --text-muted: #8E8FA0;
  --text-light: #FFFDF9;

  /* Typography */
  --font-heading: 'DM Serif Display', serif;
  --font-body: 'Outfit', sans-serif;

  /* Borders & Shadows */
  --radius-std: 16px;
  --radius-sm: 10px;
  --shadow-subtle: 0 4px 20px rgba(26, 27, 46, 0.05);
  --shadow-hover: 0 8px 30px rgba(26, 27, 46, 0.1);
  --transition: all 0.3s ease;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 80px;
}

/* --- 2. Reset & Base Styles --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background-color: var(--cream);
  line-height: 1.6;
  font-size: 18px;
  font-weight: 300;
}

a {
  color: var(--terracotta);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--sun-amber);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
}

/* --- 3. Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; margin-top: 2.5rem; }
h3 { font-size: 1.5rem; margin-top: 2rem; }
p { margin-bottom: 1.5rem; }

/* --- 4. Shared Navigation --- */
.site-nav {
  position: sticky;
  top: 0;
  background-color: rgba(255, 253, 249, 0.95);
  backdrop-filter: blur(10px);
  height: var(--nav-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 5%;
  z-index: 1000;
  box-shadow: var(--shadow-subtle);
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  color: var(--sun-gold);
}

.nav-logo:hover {
  color: var(--sun-amber);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-primary);
  font-weight: 500;
  font-size: 1rem;
}

.nav-links a:hover {
  color: var(--sun-gold);
}

.nav-cta {
  background-color: var(--sun-gold);
  color: var(--text-light) !important;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.nav-cta:hover {
  background-color: var(--sun-amber) !important;
  transform: translateY(-2px);
}

/* Mobile Toggle */
.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.nav-mobile-toggle span {
  display: block;
  height: 3px;
  width: 100%;
  background-color: var(--text-primary);
  border-radius: 3px;
  transition: var(--transition);
}

/* Mobile Nav Logic */
@media (max-width: 900px) {
  .nav-mobile-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: var(--cream);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    box-shadow: var(--shadow-subtle);
    transform: translateY(-150%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
  }

  .site-nav.open .nav-links {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav.open .nav-mobile-toggle span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
  .site-nav.open .nav-mobile-toggle span:nth-child(2) { opacity: 0; }
  .site-nav.open .nav-mobile-toggle span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }
}

/* --- 5. Article & Page Heroes --- */
.article-hero {
  background: radial-gradient(circle at 80% 20%, var(--twilight) 0%, var(--night-sky) 100%);
  color: var(--text-light);
  padding: 6rem 5% 5rem;
  text-align: center;
}

.article-hero h1 {
  color: var(--text-light);
  max-width: 800px;
  margin: 0 auto 1rem;
}

.breadcrumb {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.breadcrumb a {
  color: var(--sun-gold);
}

.breadcrumb a:hover {
  color: var(--sun-amber);
  text-decoration: underline;
}

.article-hero .meta {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.article-hero .meta span {
  margin: 0 0.5rem;
}

/* --- 6. Article Content Layout --- */
.article-content {
  max-width: 800px;
  margin: 4rem auto;
  padding: 0 5%;
}

.article-content ul, .article-content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.article-content li {
  margin-bottom: 0.5rem;
}

/* Key Stats */
.key-stat {
  display: flex;
  gap: 2rem;
  background-color: var(--desert-sand);
  padding: 2rem;
  border-radius: var(--radius-std);
  margin: -3rem auto 3rem;
  position: relative;
  box-shadow: var(--shadow-hover);
  justify-content: space-around;
  flex-wrap: wrap;
  max-width: 800px;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--terracotta);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Data Tables */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2.5rem 0;
  background-color: white;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
}

.data-table th, .data-table td {
  padding: 1rem 1.5rem;
  text-align: left;
  border-bottom: 1px solid var(--pale-sage);
}

.data-table th {
  background-color: var(--pale-sage);
  color: var(--text-primary);
  font-weight: 600;
  font-family: var(--font-body);
  font-size: 0.95rem;
}

.data-table td.highlight {
  color: var(--terracotta);
  font-weight: 600;
  background-color: var(--desert-sand);
}

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

/* Callout Boxes */
blockquote {
  background-color: var(--desert-sand);
  border-left: 4px solid var(--sun-gold);
  padding: 1.5rem;
  margin: 2rem 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

blockquote p {
  margin-bottom: 0;
}

blockquote strong {
  color: var(--sun-amber);
}

/* Mid/End CTA Boxes */
.cta-box {
  background: var(--night-sky);
  color: var(--text-light);
  padding: 3rem;
  border-radius: var(--radius-std);
  text-align: center;
  margin: 3rem 0;
  box-shadow: var(--shadow-hover);
}

.cta-box h3 {
  color: var(--text-light);
  margin-top: 0;
}

.cta-box p {
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.cta-box a {
  display: inline-block;
  background-color: var(--sun-gold);
  color: var(--text-light);
  padding: 1rem 2rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.cta-box a:hover {
  background-color: var(--sun-amber);
  transform: translateY(-2px);
}

/* --- 7. Related Articles --- */
.related-articles {
  background-color: var(--pale-sage);
  padding: 4rem 5%;
  margin-top: 4rem;
}

.related-articles .inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.related-articles h2 {
  text-align: center;
  margin-top: 0;
  margin-bottom: 3rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.related-card {
  background-color: white;
  padding: 2rem;
  border-radius: var(--radius-std);
  box-shadow: var(--shadow-subtle);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.related-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  color: var(--text-primary);
}

.related-card h3 {
  font-size: 1.2rem;
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}

.related-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0;
  flex-grow: 1;
}

.tag {
  align-self: flex-start;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-family: var(--font-body);
}

.tag.costs { background-color: var(--desert-sand); color: var(--terracotta); }
.tag.incentives { background-color: var(--pale-sage); color: var(--sage); }
.tag.guide { background-color: #E3E8F0; color: var(--twilight); }

/* --- 8. Footer --- */
.site-footer {
  background-color: var(--night-sky);
  color: var(--text-light);
  padding: 4rem 5% 2rem;
  text-align: center;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--sun-gold);
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin: 2rem 0;
}

.footer-links a {
  color: var(--text-muted);
  font-weight: 500;
}

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

.footer-disclaimer {
  font-size: 0.8rem;
  color: var(--text-muted);
  max-width: 800px;
  margin: 0 auto 2rem;
  line-height: 1.5;
}

.footer-copyright {
  font-size: 0.9rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  margin-bottom: 0;
}

.footer-copyright a {
  color: var(--sun-gold);
}

/* --- 9. Blog Index Page --- */
.blog-hero {
  background: radial-gradient(circle at 70% 30%, var(--twilight) 0%, var(--night-sky) 100%);
  color: var(--text-light);
  padding: 6rem 5% 4rem;
  text-align: center;
}

.blog-hero h1 {
  color: var(--text-light);
  margin-bottom: 1rem;
}

.blog-hero p {
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.1rem;
}

.blog-index {
  max-width: var(--max-width);
  margin: 4rem auto;
  padding: 0 5%;
}

.blog-section-title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  color: var(--text-primary);
  border-bottom: 3px solid var(--sun-gold);
  padding-bottom: 0.75rem;
  margin-bottom: 2rem;
  margin-top: 3rem;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.blog-card {
  background-color: white;
  border-radius: var(--radius-std);
  box-shadow: var(--shadow-subtle);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  color: var(--text-primary);
  transition: var(--transition);
}

.blog-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  color: var(--text-primary);
}

.blog-card .tag {
  margin-bottom: 1rem;
}

.blog-card h3 {
  font-size: 1.2rem;
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.blog-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0;
  flex-grow: 1;
}

.hub-card {
  border-left: 4px solid var(--sun-gold);
}

/* --- 10. Responsive Utilities --- */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }
  h3 { font-size: 1.3rem; }

  .article-hero {
    padding: 4rem 5% 4rem;
  }

  .key-stat {
    margin: -2rem auto 2rem;
    padding: 1.5rem;
    gap: 1.5rem;
  }

  .stat-value {
    font-size: 1.6rem;
  }

  .cta-box {
    padding: 2rem 1.5rem;
  }

  .data-table th, .data-table td {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .blog-grid {
    grid-template-columns: 1fr;
  }
}