/* Alpharetta Plumber Expert - High Performance Custom Stylesheet */
:root {
  --primary-dark: #0B192C;
  --secondary-navy: #1E3E62;
  --accent-blue: #008DDA;
  --accent-cyan: #00C4FF;
  --accent-orange: #E65100;
  --accent-gold: #F59E0B;
  --light-bg: #F8FAFC;
  --card-bg: #FFFFFF;
  --text-main: #1E293B;
  --text-muted: #64748B;
  --text-light: #F8FAFC;
  --border-color: #E2E8F0;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(11, 25, 44, 0.08);
  --shadow-lg: 0 10px 25px rgba(11, 25, 44, 0.12);
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --header-height: 80px;
}

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

html {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-main);
  background-color: var(--light-bg);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Accessibility: Skip to Content */
.skip-link {
  position: absolute;
  top: -60px;
  left: 10px;
  background: var(--accent-orange);
  color: #FFFFFF;
  padding: 10px 16px;
  z-index: 10000;
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: top 0.2s ease;
  text-decoration: none;
}
.skip-link:focus {
  top: 10px;
}

/* Accessibility: Focus States */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--accent-blue);
  outline-offset: 2px;
}

/* Utility Bar */
.top-bar {
  background: var(--primary-dark);
  color: #CBD5E1;
  font-size: 0.875rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.top-bar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.top-bar a {
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
}
.top-bar a:hover {
  text-decoration: underline;
}

/* Main Header */
.site-header {
  background: #FFFFFF;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  border-bottom: 1px solid var(--border-color);
}
.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}
.brand-logo img {
  height: 48px;
  width: auto;
  display: block;
}

/* Desktop Navigation */
.main-nav ul {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 20px;
}
.main-nav a {
  color: var(--primary-dark);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 8px 4px;
  position: relative;
  transition: color 0.2s;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--accent-blue);
}
.header-cta-group {
  display: flex;
  align-items: center;
  gap: 15px;
}
.header-phone-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-orange);
  color: #FFFFFF !important;
  font-weight: 700;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: background 0.2s, transform 0.1s;
}
.header-phone-btn:hover {
  background: #BF360C;
  transform: translateY(-1px);
}

/* Hamburger Button */
.hamburger-btn {
  display: none;
  background: none;
  border: 1px solid var(--border-color);
  padding: 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.hamburger-box {
  width: 24px;
  height: 18px;
  display: block;
  position: relative;
}
.hamburger-line {
  display: block;
  background: var(--primary-dark);
  position: absolute;
  height: 2px;
  width: 100%;
  left: 0;
  transition: all 0.3s ease;
}
.hamburger-line:nth-child(1) { top: 0; }
.hamburger-line:nth-child(2) { top: 8px; }
.hamburger-line:nth-child(3) { top: 16px; }

.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}
.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Navigation Drawer */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: 73px;
  left: 0;
  right: 0;
  bottom: 0;
  background: #FFFFFF;
  z-index: 999;
  padding: 24px;
  overflow-y: auto;
  border-top: 1px solid var(--border-color);
}
.mobile-nav-drawer.open {
  display: block;
}
.mobile-nav-drawer ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.mobile-nav-drawer a {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--primary-dark);
  text-decoration: none;
  display: block;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-color);
}
.mobile-drawer-cta {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Layout & Containers */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.section-padding {
  padding: 60px 0;
}
.section-padding-sm {
  padding: 36px 0;
}

/* Breadcrumbs */
.breadcrumb-nav {
  background: var(--light-bg);
  padding: 12px 0;
  font-size: 0.875rem;
  border-bottom: 1px solid var(--border-color);
}
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  gap: 8px;
  color: var(--text-muted);
}
.breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: #94A3B8;
}
.breadcrumbs a {
  color: var(--secondary-navy);
  text-decoration: none;
}
.breadcrumbs a:hover {
  text-decoration: underline;
  color: var(--accent-blue);
}
.breadcrumbs [aria-current="page"] {
  font-weight: 600;
  color: var(--primary-dark);
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-navy) 100%);
  color: #FFFFFF;
  padding: 60px 0;
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}
.hero-content h1 {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.hero-lead {
  font-size: 1.15rem;
  line-height: 1.6;
  color: #E2E8F0;
  margin-bottom: 28px;
}
.hero-cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 30px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 48px;
}
.btn-primary {
  background: var(--accent-orange);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(230, 81, 0, 0.4);
}
.btn-primary:hover {
  background: #BF360C;
  transform: translateY(-2px);
}
.btn-secondary {
  background: #FFFFFF;
  color: var(--primary-dark);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover {
  background: #F1F5F9;
  color: var(--secondary-navy);
}
.btn-emergency {
  background: #DC2626;
  color: #FFFFFF;
  animation: pulse-border 2s infinite;
}
@keyframes pulse-border {
  0% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.7); }
  70% { box-shadow: 0 0 0 10px rgba(220, 38, 38, 0); }
  100% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0); }
}

.hero-trust-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 20px;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-cyan);
}
.hero-image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 3px solid rgba(255,255,255,0.1);
}
.hero-image-wrap img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 16 / 10;
}

/* Content Layout (Article + Sidebar) */
.page-layout-grid {
  display: grid;
  grid-template-columns: 2.8fr 1.2fr;
  gap: 40px;
  align-items: start;
}
.main-article {
  background: #FFFFFF;
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}
.main-article h2 {
  font-size: 1.75rem;
  color: var(--primary-dark);
  margin: 32px 0 16px 0;
  line-height: 1.3;
}
.main-article h3 {
  font-size: 1.3rem;
  color: var(--secondary-navy);
  margin: 24px 0 12px 0;
}
.main-article p {
  margin-bottom: 18px;
  color: #334155;
  font-size: 1.05rem;
  line-height: 1.7;
}
.main-article ul, .main-article ol {
  margin: 0 0 24px 24px;
  color: #334155;
  line-height: 1.7;
}
.main-article li {
  margin-bottom: 8px;
}

/* Callout Box */
.callout-box {
  background: #F0F9FF;
  border-left: 4px solid var(--accent-blue);
  padding: 20px;
  border-radius: var(--radius-sm);
  margin: 24px 0;
}
.callout-box-emergency {
  background: #FEF2F2;
  border-left-color: #DC2626;
}
.callout-box strong {
  color: var(--primary-dark);
  display: block;
  margin-bottom: 6px;
}

/* Sidebar */
.sidebar {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.sidebar-widget {
  background: #FFFFFF;
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}
.sidebar-widget h3 {
  font-size: 1.2rem;
  color: var(--primary-dark);
  margin-bottom: 16px;
  border-bottom: 2px solid var(--accent-blue);
  padding-bottom: 8px;
}
.sidebar-cta-box {
  background: linear-gradient(135deg, var(--secondary-navy) 0%, var(--primary-dark) 100%);
  color: #FFFFFF;
  padding: 24px;
  border-radius: var(--radius-md);
  text-align: center;
}
.sidebar-cta-box h3 {
  color: #FFFFFF;
  border: none;
  font-size: 1.3rem;
  margin-bottom: 12px;
}
.sidebar-phone-btn {
  display: block;
  background: var(--accent-orange);
  color: #FFFFFF;
  padding: 12px;
  border-radius: var(--radius-sm);
  font-weight: 800;
  text-decoration: none;
  margin-top: 16px;
  font-size: 1.1rem;
}
.sidebar-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.sidebar-nav-list a {
  color: var(--secondary-navy);
  text-decoration: none;
  font-weight: 500;
  display: block;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  background: var(--light-bg);
  transition: all 0.2s;
}
.sidebar-nav-list a:hover {
  background: #E0F2FE;
  color: var(--accent-blue);
  padding-left: 12px;
}

/* Grids & Cards */
.cards-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 30px;
}
.cards-grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 30px;
}
.service-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-blue);
}
.service-card h3 {
  font-size: 1.25rem;
  color: var(--primary-dark);
  margin-bottom: 12px;
}
.service-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
  flex-grow: 1;
}
.service-card a.card-link {
  color: var(--accent-blue);
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.service-card a.card-link:hover {
  text-decoration: underline;
}

/* Accordion FAQ */
.faq-section {
  margin-top: 40px;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 20px;
}
details.faq-item {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  transition: background-color 0.2s;
}
details.faq-item[open] {
  background: #F8FAFC;
  border-color: #CBD5E1;
}
details.faq-item summary {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary-dark);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
details.faq-item summary::-webkit-details-marker {
  display: none;
}
details.faq-item summary::after {
  content: "+";
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--accent-blue);
  transition: transform 0.2s;
}
details.faq-item[open] summary::after {
  content: "−";
  transform: rotate(180deg);
}
details.faq-item .faq-answer {
  margin-top: 14px;
  color: #334155;
  line-height: 1.7;
}

/* Contact & Estimate Form */
.form-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 6px;
  font-size: 0.95rem;
}
.form-control {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #CBD5E1;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  color: var(--text-main);
  background: #FFFFFF;
  transition: border-color 0.2s;
}
.form-control:focus {
  border-color: var(--accent-blue);
}
.form-help {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Footer */
.site-footer {
  background: var(--primary-dark);
  color: #94A3B8;
  padding: 60px 0 30px 0;
  margin-top: auto;
  border-top: 4px solid var(--accent-blue);
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}
.footer-col h4 {
  color: #FFFFFF;
  font-size: 1.15rem;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 8px;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: var(--accent-cyan);
}
.footer-col p {
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 12px;
}
.footer-col a {
  color: #CBD5E1;
  text-decoration: none;
  transition: color 0.2s;
}
.footer-col a:hover {
  color: #FFFFFF;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.875rem;
}

/* Mandatory Form Error Modal (Section 16 & 118) */
.error-modal-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(11, 25, 44, 0.85);
  backdrop-filter: blur(4px);
  z-index: 99999;
  justify-content: center;
  align-items: center;
  padding: 20px;
}
.error-modal-backdrop.active {
  display: flex;
}
.error-modal-dialog {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 100%;
  padding: 32px;
  box-shadow: var(--shadow-lg);
  border: 2px solid #EF4444;
  text-align: center;
  animation: modal-pop 0.2s ease-out;
}
@keyframes modal-pop {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}
.error-modal-dialog h3 {
  color: #DC2626;
  font-size: 1.4rem;
  margin-bottom: 12px;
}
.error-modal-message {
  font-size: 1.05rem;
  color: #334155;
  margin-bottom: 24px;
  line-height: 1.5;
}
.error-modal-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.btn-call-modal {
  background: #DC2626;
  color: #FFFFFF;
  font-weight: 800;
  font-size: 1.15rem;
  padding: 14px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  display: block;
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
}
.btn-call-modal:hover {
  background: #B91C1C;
}
.btn-close-modal {
  background: #F1F5F9;
  color: #475569;
  border: 1px solid var(--border-color);
  padding: 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
}
.btn-close-modal:hover {
  background: #E2E8F0;
}

/* Mobile Sticky CTA Bar (Section 9 & 86) */
.mobile-sticky-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--primary-dark);
  z-index: 900;
  padding: 10px 16px;
  padding-bottom: calc(10px + env(safe-area-inset-bottom));
  box-shadow: 0 -4px 16px rgba(0,0,0,0.2);
  border-top: 1px solid rgba(255,255,255,0.15);
}
.mobile-sticky-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.mobile-sticky-call {
  background: var(--accent-orange);
  color: #FFFFFF !important;
  text-decoration: none;
  font-weight: 800;
  padding: 12px;
  border-radius: var(--radius-sm);
  text-align: center;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.mobile-sticky-service {
  background: #FFFFFF;
  color: var(--primary-dark) !important;
  text-decoration: none;
  font-weight: 700;
  padding: 12px;
  border-radius: var(--radius-sm);
  text-align: center;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .page-layout-grid {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static;
  }
}

@media (max-width: 768px) {
  body {
    padding-bottom: 70px; /* Offset for sticky CTA bar */
  }
  .main-nav {
    display: none;
  }
  .hamburger-btn {
    display: block;
  }
  .mobile-sticky-bar {
    display: block;
  }
  .header-cta-group .header-phone-btn {
    display: none;
  }
  .hero-content h1 {
    font-size: 2rem;
  }
  .main-article {
    padding: 24px 16px;
  }
}

/* Accessibility: Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}