/* ============================================
   TruckUpgradesGuide.com - Rugged/Masculine Design
   Dark Gray/Charcoal + Orange Accent - Mobile-First - 2026
   ============================================ */

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

:root {
  --navy:         #1a1a1a;
  --navy-mid:     #222222;
  --navy-light:   #2d2d2d;
  --steel:        #3d3d3d;
  --steel-light:  #555555;
  --accent:       #e67e22;
  --accent-dark:  #c0651a;
  --accent-light: #fef3e2;
  --green:        #16a34a;
  --green-bg:     #f0fdf4;
  --red:          #dc2626;
  --red-bg:       #fef2f2;
  --white:        #ffffff;
  --bg:           #F5F5F3;
  --bg-alt:       #EEEDEB;
  --charcoal:     #1a1a1a;
  --charcoal-mid: #374151;
  --charcoal-lt:  #6B7280;
  --border:       #D1D5DB;
  --border-lt:    #E5E7EB;
  --shadow-sm:    0 1px 4px rgba(0,0,0,.07);
  --shadow:       0 2px 10px rgba(0,0,0,.09);
  --shadow-md:    0 4px 20px rgba(0,0,0,.11);
  --shadow-lg:    0 8px 32px rgba(0,0,0,.13);
  --max-width:    1120px;
  --radius:       10px;
  --radius-sm:    6px;
  --radius-lg:    16px;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--charcoal);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--steel-light); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent); }

/* ===========================
   LAYOUT
   =========================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===========================
   HEADER / NAV
   =========================== */
.site-header {
  background: var(--navy);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 0 2px 14px rgba(0,0,0,.4);
}
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.site-logo {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  text-decoration: none;
  letter-spacing: -0.5px;
}
.site-logo span { color: var(--accent); }

.nav-links { display: flex; gap: 24px; list-style: none; }
.nav-links a { color: rgba(255,255,255,.8); font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--accent); }

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 24px;
  cursor: pointer;
}

/* ===========================
   HERO
   =========================== */
.hero {
  background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
  color: #fff;
  padding: 60px 20px;
  text-align: center;
}
.hero h1 {
  font-size: 2.4em;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}
.hero p {
  font-size: 1.15em;
  color: rgba(255,255,255,.75);
  max-width: 640px;
  margin: 0 auto 24px;
}
.hero .cta-btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.hero .cta-btn:hover { background: var(--accent-dark); color: #fff; }

/* ===========================
   STAT BAR
   =========================== */
.stat-bar {
  background: var(--white);
  border-bottom: 1px solid var(--border-lt);
  padding: 20px;
}
.stat-bar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: 48px;
}
.stat-item { text-align: center; }
.stat-number { font-size: 1.8em; font-weight: 800; color: var(--accent); }
.stat-label { font-size: 0.85em; color: var(--charcoal-lt); text-transform: uppercase; letter-spacing: 0.5px; }

/* ===========================
   CARDS / PRODUCT CARDS
   =========================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  padding: 40px 0;
}
.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-lt);
  overflow: hidden;
  transition: box-shadow .2s, transform .2s;
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card-body { padding: 24px; }
.card-body h3 { font-size: 1.15em; margin-bottom: 8px; color: var(--charcoal); }
.card-body p { font-size: 0.95em; color: var(--charcoal-lt); margin-bottom: 16px; }
.card-body .cta-btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
}
.card-body .cta-btn:hover { background: var(--accent-dark); color: #fff; }

/* ===========================
   PRODUCT REVIEW CARDS
   =========================== */
.product-badge {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}
.product-badge.badge-dark { background: var(--charcoal); }
.product-badge.badge-green { background: var(--green); }

.spec-table { width: 100%; border-collapse: collapse; margin: 20px 0; }
.spec-table th { background: var(--navy); color: #fff; padding: 12px 16px; text-align: left; font-size: 13px; text-transform: uppercase; letter-spacing: 0.5px; }
.spec-table td { padding: 12px 16px; border-bottom: 1px solid var(--border-lt); font-size: 14px; }
.spec-table tr:nth-child(even) { background: var(--bg-alt); }

.cta-btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  transition: background .2s;
}
.cta-btn:hover { background: var(--accent-dark); color: #fff; }

/* ===========================
   PROS / CONS
   =========================== */
.pros-cons { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 20px 0; }
.pros { background: var(--green-bg); padding: 16px; border-radius: var(--radius-sm); border-left: 4px solid var(--green); }
.cons { background: var(--red-bg); padding: 16px; border-radius: var(--radius-sm); border-left: 4px solid var(--red); }
.pros h4, .cons h4 { font-size: 14px; margin-bottom: 8px; }
.pros ul, .cons ul { margin-left: 16px; font-size: 14px; }
.pros li, .cons li { margin-bottom: 4px; }

/* ===========================
   FAQ
   =========================== */
.faq-section { padding: 40px 0; }
.faq-item { background: var(--white); padding: 20px 24px; margin: 12px 0; border-radius: var(--radius-sm); border-left: 3px solid var(--accent); box-shadow: var(--shadow-sm); }
.faq-item h3 { font-size: 1.05em; color: var(--charcoal); margin-bottom: 8px; }
.faq-item p { font-size: 0.95em; color: var(--charcoal-mid); margin-bottom: 0; }

/* ===========================
   FOOTER
   =========================== */
.site-footer {
  background: var(--navy);
  color: rgba(255,255,255,.7);
  padding: 40px 20px 20px;
  margin-top: 60px;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}
.footer-logo { font-size: 18px; font-weight: 800; color: #fff; text-decoration: none; margin-bottom: 12px; display: block; }
.footer-logo span { color: var(--accent); }
.site-footer p { font-size: 13px; line-height: 1.6; }
.site-footer h4 { color: #fff; font-size: 14px; margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { color: rgba(255,255,255,.6); font-size: 13px; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  max-width: var(--max-width);
  margin: 30px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,.1);
  text-align: center;
  font-size: 12px;
}
.affiliate-disclosure { font-size: 12px; color: rgba(255,255,255,.5); margin-top: 12px; }

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-menu-btn { display: block; }
  .hero h1 { font-size: 1.8em; }
  .stat-bar-inner { flex-wrap: wrap; gap: 24px; }
  .card-grid { grid-template-columns: 1fr; }
  .pros-cons { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
  .header-inner { height: 56px; }
}