/* ========================================
   Bloomington Dryer Vent Cleaning
   Main Stylesheet — Mobile First
   ======================================== */

:root {
  --blue: #1a4f9e;
  --blue-dark: #0f3474;
  --blue-light: #2e6fd4;
  --blue-pale: #e8f0fc;
  --white: #ffffff;
  --gray-900: #1a1a2e;
  --gray-800: #2d2d44;
  --gray-700: #4a4a68;
  --gray-500: #6b6b8a;
  --gray-200: #e8e8f0;
  --gray-100: #f4f4f8;
  --accent: #f0a500;
  --red: #c0392b;
  --green: #27ae60;
  --radius: 8px;
  --radius-lg: 16px;
  --shadow: 0 2px 16px rgba(26,79,158,0.10);
  --shadow-lg: 0 8px 40px rgba(26,79,158,0.18);
  --transition: 0.22s cubic-bezier(.4,0,.2,1);
  --max-w: 1160px;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

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

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

body {
  font-family: var(--font);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--blue); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--blue-light); }

.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }

/* ---- TYPOGRAPHY ---- */
h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 800; line-height: 1.15; color: var(--gray-900); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.3rem); font-weight: 700; line-height: 1.25; color: var(--gray-900); }
h3 { font-size: clamp(1.15rem, 2.5vw, 1.55rem); font-weight: 700; line-height: 1.3; color: var(--gray-900); }
h4 { font-size: 1.1rem; font-weight: 600; color: var(--gray-900); }
p { margin-bottom: 1.1em; }
p:last-child { margin-bottom: 0; }

.section-label {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
  background: var(--blue-pale);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}
.btn-primary:hover { background: var(--blue-dark); border-color: var(--blue-dark); color: var(--white); }
.btn-accent {
  background: var(--accent);
  color: var(--gray-900);
  border-color: var(--accent);
}
.btn-accent:hover { background: #d4920a; border-color: #d4920a; color: var(--gray-900); }
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}
.btn-outline:hover { background: var(--white); color: var(--blue); }
.btn-lg { padding: 18px 38px; font-size: 1.1rem; }

/* ---- HEADER / NAV ---- */
#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--white);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.logo-icon { width: 40px; height: 40px; flex-shrink: 0; }
.logo-text { display: flex; flex-direction: column; }
.logo-name {
  font-size: 1rem;
  font-weight: 800;
  color: var(--blue);
  line-height: 1.1;
}
.logo-sub {
  font-size: 0.7rem;
  color: var(--gray-500);
  font-weight: 500;
  line-height: 1;
}

.nav-links {
  display: none;
  list-style: none;
  gap: 8px;
  align-items: center;
}
@media(min-width:768px){
  .nav-links { display: flex; }
}
.nav-links a {
  padding: 8px 14px;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--gray-700);
  border-radius: var(--radius);
  transition: all var(--transition);
}
.nav-links a:hover { background: var(--blue-pale); color: var(--blue); }

.nav-cta { display: none; }
@media(min-width:768px){ .nav-cta { display: inline-flex; } }

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
}
@media(min-width:768px){ .hamburger { display: none; } }
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-800);
  border-radius: 2px;
  transition: all var(--transition);
}

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--white);
  z-index: 999;
  flex-direction: column;
  padding: 80px 24px 40px;
  gap: 4px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gray-800);
  padding: 14px 0;
  border-bottom: 1px solid var(--gray-200);
}
.mobile-menu-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  color: var(--gray-700);
}

/* ---- TOP BAR ---- */
.top-bar {
  background: var(--blue-dark);
  color: rgba(255,255,255,0.9);
  font-size: 0.82rem;
  padding: 8px 0;
  text-align: center;
}
.top-bar strong { color: var(--white); }

/* ---- HERO ---- */
.hero {
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue) 60%, #2e6fd4 100%);
  color: var(--white);
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
}
@media(min-width:900px){
  .hero-grid { grid-template-columns: 1fr 420px; }
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: #fff;
}
.hero h1 { color: var(--white); margin-bottom: 20px; }
.hero h1 em { color: var(--accent); font-style: normal; }
.hero-lead {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.88);
  margin-bottom: 32px;
  max-width: 560px;
}
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-trust {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.82);
}
.trust-item svg { color: var(--accent); }

.hero-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-lg);
}
.hero-card h3 {
  color: var(--blue);
  margin-bottom: 8px;
  font-size: 1.2rem;
}
.hero-card p { font-size: 0.92rem; color: var(--gray-700); margin-bottom: 20px; }
.hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
.stat-box {
  background: var(--gray-100);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}
.stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--blue);
  display: block;
  line-height: 1;
}
.stat-label { font-size: 0.75rem; color: var(--gray-500); font-weight: 600; margin-top: 4px; }

/* ---- SECTIONS ---- */
.section { padding: 72px 0; }
.section-alt { background: var(--gray-100); }
.section-blue { background: var(--blue); color: var(--white); }
.section-blue h2, .section-blue h3 { color: var(--white); }
.section-dark { background: var(--gray-900); color: var(--white); }
.section-dark h2, .section-dark h3, .section-dark h4 { color: var(--white); }

.section-header { text-align: center; margin-bottom: 52px; }
.section-header p { color: var(--gray-500); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }

/* ---- CARDS ---- */
.cards { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media(min-width:600px){ .cards-2 { grid-template-columns: 1fr 1fr; } }
@media(min-width:900px){ .cards-3 { grid-template-columns: 1fr 1fr 1fr; } }
@media(min-width:1000px){ .cards-4 { grid-template-columns: 1fr 1fr 1fr 1fr; } }

.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card-icon {
  width: 52px; height: 52px;
  background: var(--blue-pale);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.card-icon svg { color: var(--blue); }
.card h3 { margin-bottom: 10px; font-size: 1.15rem; }
.card p { color: var(--gray-500); font-size: 0.93rem; }

/* ---- WARNING SIGNS ---- */
.warning-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media(min-width:600px){ .warning-grid { grid-template-columns: 1fr 1fr; } }
@media(min-width:900px){ .warning-grid { grid-template-columns: 1fr 1fr 1fr; } }
.warning-item {
  display: flex;
  gap: 14px;
  padding: 20px;
  background: var(--white);
  border-radius: var(--radius);
  border-left: 4px solid var(--red);
  box-shadow: var(--shadow);
}
.warning-icon {
  flex-shrink: 0;
  width: 40px; height: 40px;
  background: #fdf0ee;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--red);
}

/* ---- PROCESS STEPS ---- */
.process-steps { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media(min-width:700px){ .process-steps { grid-template-columns: 1fr 1fr; } }
@media(min-width:1000px){ .process-steps { grid-template-columns: 1fr 1fr 1fr 1fr; } }
.process-step {
  text-align: center;
  padding: 28px 20px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  position: relative;
}
.step-num {
  width: 52px; height: 52px;
  background: var(--blue);
  color: var(--white);
  font-size: 1.4rem;
  font-weight: 800;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.process-step h3 { font-size: 1.05rem; margin-bottom: 8px; }
.process-step p { font-size: 0.88rem; color: var(--gray-500); }

/* ---- TESTIMONIALS ---- */
.testimonials { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media(min-width:700px){ .testimonials { grid-template-columns: 1fr 1fr; } }
@media(min-width:1000px){ .testimonials { grid-template-columns: 1fr 1fr 1fr; } }
.testimonial {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
}
.stars { color: var(--accent); font-size: 1.1rem; margin-bottom: 12px; letter-spacing: 2px; }
.testimonial blockquote { font-style: italic; color: var(--gray-700); margin-bottom: 16px; font-size: 0.95rem; }
.testimonial cite { font-weight: 700; font-size: 0.88rem; color: var(--gray-900); font-style: normal; }
.testimonial cite span { color: var(--gray-500); font-weight: 400; }

/* ---- BLOG GRID ---- */
.blog-grid { display: grid; grid-template-columns: 1fr; gap: 28px; }
@media(min-width:600px){ .blog-grid { grid-template-columns: 1fr 1fr; } }
@media(min-width:900px){ .blog-grid { grid-template-columns: 1fr 1fr 1fr; } }
.blog-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.blog-card-thumb {
  height: 160px;
  overflow: hidden;
  background: var(--blue-pale);
  display: flex;
  align-items: center;
  justify-content: center;
}
.blog-card-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.blog-cat {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 8px;
}
.blog-card h3 { font-size: 1.05rem; margin-bottom: 10px; }
.blog-card h3 a { color: var(--gray-900); }
.blog-card h3 a:hover { color: var(--blue); }
.blog-card p { font-size: 0.88rem; color: var(--gray-500); flex: 1; }
.blog-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--gray-200);
  font-size: 0.8rem;
  color: var(--gray-500);
}
.read-more {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--blue);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.read-more:hover { color: var(--blue-dark); }

/* ---- CTA BAND ---- */
.cta-band {
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  color: var(--white);
  padding: 60px 0;
  text-align: center;
}
.cta-band h2 { color: var(--white); margin-bottom: 14px; }
.cta-band p { color: rgba(255,255,255,0.82); margin-bottom: 32px; font-size: 1.05rem; max-width: 540px; margin-left: auto; margin-right: auto; }
.cta-band .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---- COMPARISON TABLE ---- */
.compare-table { width: 100%; border-collapse: collapse; margin-top: 24px; }
.compare-table th, .compare-table td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--gray-200); font-size: 0.93rem; }
.compare-table th { background: var(--blue); color: var(--white); font-weight: 700; }
.compare-table tr:nth-child(even) { background: var(--gray-100); }
.compare-table td:first-child { font-weight: 600; color: var(--gray-900); }
.check { color: var(--green); font-weight: 700; }
.cross { color: var(--red); }

/* ---- BREADCRUMB ---- */
.breadcrumb {
  padding: 12px 0;
  font-size: 0.82rem;
  color: var(--gray-500);
}
.breadcrumb a { color: var(--gray-500); }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb span { margin: 0 6px; }

/* ---- BLOG POST ---- */
.blog-post-hero {
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  color: var(--white);
  padding: 52px 0 40px;
}
.blog-post-hero h1 { color: var(--white); font-size: clamp(1.6rem, 4vw, 2.4rem); margin-bottom: 14px; }
.blog-post-hero .meta { color: rgba(255,255,255,0.75); font-size: 0.88rem; }

.blog-layout { display: grid; grid-template-columns: 1fr; gap: 40px; padding: 52px 0; }
@media(min-width:900px){ .blog-layout { grid-template-columns: 1fr 300px; } }
.blog-content { min-width: 0; }
.blog-content h2 { margin: 1.8em 0 0.6em; font-size: 1.5rem; color: var(--blue-dark); padding-bottom: 10px; border-bottom: 2px solid var(--blue-pale); }
.blog-content h3 { margin: 1.4em 0 0.5em; font-size: 1.2rem; }
.blog-content p { color: var(--gray-700); line-height: 1.75; margin-bottom: 1.2em; }
.blog-content ul, .blog-content ol { margin: 0 0 1.2em 1.5em; }
.blog-content li { color: var(--gray-700); margin-bottom: 6px; }
.blog-content .internal-link-box {
  background: var(--blue-pale);
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 24px 0;
}
.blog-content .internal-link-box p { color: var(--blue-dark); font-weight: 600; margin: 0; }
.blog-content .internal-link-box a { color: var(--blue); font-weight: 700; }

.blog-sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-widget {
  background: var(--gray-100);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.sidebar-widget h4 { margin-bottom: 14px; color: var(--blue-dark); }
.sidebar-links { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.sidebar-links a { font-size: 0.9rem; color: var(--gray-700); display: flex; align-items: center; gap: 6px; }
.sidebar-links a:hover { color: var(--blue); }
.sidebar-cta {
  background: var(--blue);
  color: var(--white);
  text-align: center;
  border-radius: var(--radius-lg);
  padding: 28px 20px;
}
.sidebar-cta h4 { color: var(--white); margin-bottom: 10px; }
.sidebar-cta p { color: rgba(255,255,255,0.82); font-size: 0.88rem; margin-bottom: 16px; }

/* ---- FOOTER ---- */
footer {
  background: var(--gray-900);
  color: rgba(255,255,255,0.75);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-bottom: 40px;
}
@media(min-width:600px){ .footer-grid { grid-template-columns: 1fr 1fr; } }
@media(min-width:900px){ .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }

.footer-brand .logo-name { color: var(--white); font-size: 1.2rem; }
.footer-brand .logo-sub { color: rgba(255,255,255,0.5); }
.footer-desc { color: rgba(255,255,255,0.65); font-size: 0.88rem; margin-top: 14px; margin-bottom: 18px; }

.footer-col h4 { color: var(--white); font-size: 0.95rem; margin-bottom: 14px; letter-spacing: 0.04em; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-col ul a { color: rgba(255,255,255,0.65); font-size: 0.88rem; transition: color var(--transition); }
.footer-col ul a:hover { color: var(--white); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
}
.footer-bottom a { color: rgba(255,255,255,0.55); }

/* ---- SVG INFOGRAPHIC ---- */
.infographic-section { text-align: center; }
.infographic-section svg { margin: 0 auto; display: block; max-width: 700px; }

/* ---- UTILITY ---- */
.text-center { text-align: center; }
.text-blue { color: var(--blue); }
.text-accent { color: var(--accent); }
.text-white { color: var(--white); }
.bg-white { background: var(--white); }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media(max-width:600px){ .grid-2 { grid-template-columns: 1fr; } }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }

/* ---- COST TABLE ---- */
.cost-table { width: 100%; border-collapse: collapse; }
.cost-table th, .cost-table td { padding: 12px 18px; text-align: left; border-bottom: 1px solid var(--gray-200); }
.cost-table th { background: var(--blue); color: var(--white); }
.cost-table tr:nth-child(even) td { background: var(--gray-100); }
.cost-highlight { font-weight: 700; color: var(--blue); }

/* ---- ACCORDION ---- */
.accordion-item { border-bottom: 1px solid var(--gray-200); }
.accordion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--gray-900);
}
.accordion-header:hover { color: var(--blue); }
.accordion-icon { font-size: 1.4rem; color: var(--blue); transition: transform var(--transition); }
.accordion-body { display: none; padding: 0 0 18px; color: var(--gray-700); font-size: 0.95rem; }
.accordion-item.open .accordion-body { display: block; }
.accordion-item.open .accordion-icon { transform: rotate(45deg); }

/* ---- BLOG INDEX ---- */
.blog-index-header {
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  color: var(--white);
  padding: 60px 0;
  text-align: center;
}
.blog-index-header h1 { color: var(--white); margin-bottom: 12px; }
.blog-index-header p { color: rgba(255,255,255,0.8); font-size: 1.05rem; max-width: 560px; margin: 0 auto; }

/* ---- BACK TO TOP ---- */
#back-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  background: var(--blue);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
  border: none;
  font-size: 1.2rem;
  z-index: 900;
}
#back-top.visible { opacity: 1; pointer-events: auto; }

/* ---- RESPONSIVE ---- */
@media(max-width:480px){
  .hero { padding: 52px 0 40px; }
  .section { padding: 48px 0; }
  .btn-lg { padding: 14px 24px; font-size: 1rem; }
  h1 { font-size: 1.8rem; }
}