/* ==========================================================================
   IL PLUMBING PRO — STATEWIDE DISCOVERY & DISPATCH
   Core Stylesheet & Editorial Design System
   Target: 100/100 Core Web Vitals, Pure Static CSS, Accessible & Responsive
   ========================================================================== */

:root {
  --color-primary: #0f172a;       /* Deep slate / navy */
  --color-primary-dark: #090d16;  /* Midnight navy */
  --color-primary-light: #1e293b; /* Secondary navy */
  --color-secondary: #334155;     /* Slate text */
  --color-muted: #64748b;         /* Muted gray */
  --color-accent: #ea580c;        /* High-contrast call accent (orange) */
  --color-accent-hover: #c2410c;  /* Darker orange on hover */
  --color-bg-main: #ffffff;       /* Pure white */
  --color-bg-subtle: #f8fafc;     /* Ice gray / slate 50 */
  --color-bg-card: #ffffff;
  --color-border: #e2e8f0;        /* Subtle slate border */
  --color-border-dark: #cbd5e1;
  
  --color-emergency-bg: #fef2f2;  /* Alert / warning red background */
  --color-emergency-border: #fca5a5;
  --color-emergency-text: #991b1b;
  --color-urgent-bg: #fffbeb;     /* Amber alert */
  --color-urgent-border: #fcd34d;
  --color-urgent-text: #92400e;
  --color-info-bg: #f0fdf4;       /* Subtle green verified badge */
  --color-info-border: #bbf7d0;
  --color-info-text: #166534;
  
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  --container-max: 1240px;
  --container-content: 860px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --transition: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-secondary);
  background-color: var(--color-bg-main);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  padding-bottom: 64px; /* Space for sticky mobile call bar */
}

@media (min-width: 900px) {
  body {
    padding-bottom: 0;
  }
}

/* Accessibility Skip Link */
.skip-link {
  position: absolute;
  top: -999px;
  left: 20px;
  background: var(--color-primary);
  color: #ffffff;
  padding: 12px 20px;
  z-index: 9999;
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: 20px;
}

/* Typography */
h1, h2, h3, h4 {
  color: var(--color-primary);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2rem, 3.5vw + 1rem, 3.25rem);
  margin-bottom: 1.25rem;
}

h2 {
  font-size: clamp(1.65rem, 2.5vw + 0.5rem, 2.25rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

h4 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1.25rem;
}

p.lead {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--color-primary-light);
  font-weight: 400;
}

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

a:hover, a:focus {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

ul, ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.container-narrow {
  max-width: var(--container-content);
  margin-left: auto;
  margin-right: auto;
}

.section {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

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

.section-title-wrap {
  margin-bottom: 2.75rem;
  text-align: center;
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--color-muted);
  max-width: 680px;
  margin: 0.5rem auto 0;
}

/* Site Header & Navigation (Rule 1: Uniform Markup) */
.site-header {
  background-color: var(--color-bg-main);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.logo-link {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.logo-badge {
  background-color: var(--color-primary);
  color: #ffffff;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.logo-location {
  font-size: 0.85rem;
  color: var(--color-muted);
  font-weight: 500;
  border-left: 1px solid var(--color-border);
  padding-left: 0.75rem;
  display: none;
}

@media (min-width: 640px) {
  .logo-location {
    display: inline-block;
  }
}

.menu-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.85rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
}

@media (min-width: 1024px) {
  .menu-toggle {
    display: none;
  }
}

.main-nav {
  display: none;
  position: absolute;
  top: 76px;
  left: 0;
  right: 0;
  background-color: var(--color-bg-main);
  border-bottom: 2px solid var(--color-primary);
  box-shadow: var(--shadow-lg);
  padding: 1.5rem;
}

.main-nav.is-active {
  display: block;
}

.nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.nav-link {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  padding: 0.5rem 0;
  display: block;
}

.nav-link:hover, .nav-link:focus {
  color: var(--color-accent);
  text-decoration: none;
}

/* Services Dropdown */
.dropdown {
  position: relative;
}

.dropdown-trigger {
  background: none;
  border: none;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0;
  font-family: inherit;
  width: 100%;
  justify-content: space-between;
}

.dropdown-menu {
  display: none !important;
  list-style: none;
  padding: 0.5rem 0 0.5rem 1rem;
  margin: 0;
}

.dropdown.is-open .dropdown-menu {
  display: block !important;
}

.dropdown-menu li {
  margin-bottom: 0.25rem;
}

.dropdown-menu a {
  color: var(--color-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  display: block;
  padding: 0.35rem 0;
}

.dropdown-menu a:hover {
  color: var(--color-accent);
}

@media (min-width: 1024px) {
  .main-nav {
    display: block;
    position: static;
    box-shadow: none;
    border: none;
    padding: 0;
  }
  
  .nav-list {
    flex-direction: row;
    align-items: center;
    gap: 1.75rem;
  }
  
  .nav-link {
    padding: 0.5rem 0;
    font-size: 0.95rem;
  }
  
  .dropdown-trigger {
    width: auto;
    font-size: 0.95rem;
    padding: 0.5rem 0;
  }
  
  .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 260px;
    background-color: var(--color-bg-main);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.75rem 0;
    z-index: 101;
  }
  
  .dropdown:hover .dropdown-menu,
  .dropdown:focus-within .dropdown-menu {
    display: block !important;
  }
  
  .dropdown-menu a {
    padding: 0.5rem 1.25rem;
  }
  
  .dropdown-menu a:hover {
    background-color: var(--color-bg-subtle);
  }
}

/* Call to Action Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition);
  font-size: 0.95rem;
  text-align: center;
}

.btn-phone {
  background-color: var(--color-accent);
  color: #ffffff !important;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.btn-phone:hover, .btn-phone:focus {
  background-color: var(--color-accent-hover);
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(234, 88, 12, 0.25);
}

.btn-secondary {
  background-color: var(--color-bg-main);
  color: var(--color-primary);
  border-color: var(--color-border-dark);
}

.btn-secondary:hover, .btn-secondary:focus {
  background-color: var(--color-bg-subtle);
  color: var(--color-primary-dark);
  text-decoration: none;
}

.header-cta {
  display: none;
}

@media (min-width: 768px) {
  .header-cta {
    display: inline-flex;
  }
}

/* Hero Section */
.hero-section {
  padding: 4rem 0 4.5rem;
  background: linear-gradient(to bottom, #ffffff, var(--color-bg-subtle));
  border-bottom: 1px solid var(--color-border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}

@media (min-width: 960px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3.5rem;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent);
  background-color: #fff7ed;
  border: 1px solid #ffedd5;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.75rem;
  margin-bottom: 1.5rem;
}

.hero-meta-note {
  font-size: 0.875rem;
  color: var(--color-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-image-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  background-color: var(--color-primary);
}

.hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* Alert Boxes & Urgency Callouts */
.alert-box {
  padding: 1.5rem;
  border-radius: var(--radius-md);
  margin: 2rem 0;
  border-left: 4px solid;
}

.alert-warning {
  background-color: var(--color-urgent-bg);
  border-color: var(--color-urgent-border);
  color: var(--color-urgent-text);
}

.alert-warning h3 {
  color: var(--color-urgent-text);
}

.alert-emergency {
  background-color: var(--color-emergency-bg);
  border-color: var(--color-emergency-border);
  color: var(--color-emergency-text);
}

.alert-emergency h3 {
  color: var(--color-emergency-text);
}

.alert-info {
  background-color: var(--color-info-bg);
  border-color: var(--color-info-border);
  color: var(--color-info-text);
}

.alert-info h3 {
  color: var(--color-info-text);
}

/* Service Categories Grid */
.service-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .service-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
  }
}

.service-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-dark);
}

.service-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: #fff7ed;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.service-card h3 {
  margin-bottom: 0.65rem;
  font-size: 1.2rem;
}

.service-card p {
  color: var(--color-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.service-card .card-link {
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* How It Works (Three-Step Process) */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.step-item {
  position: relative;
  padding: 1.5rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.step-num {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  font-family: var(--font-mono);
}

.step-item h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.step-item p {
  font-size: 0.95rem;
  color: var(--color-secondary);
  margin-bottom: 0;
}

/* Illinois City Directory & Search Filter */
.directory-controls {
  max-width: 540px;
  margin: 0 auto 2.5rem;
}

.search-input-wrap {
  position: relative;
  width: 100%;
}

.search-input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.75rem;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: inherit;
  color: var(--color-primary);
  background: var(--color-bg-card);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.15);
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-muted);
  pointer-events: none;
}

.city-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (min-width: 640px) {
  .city-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .city-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.city-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-decoration: none;
  transition: all var(--transition);
}

.city-card:hover {
  border-color: var(--color-accent);
  background-color: #fff7ed;
  text-decoration: none;
  transform: translateY(-1px);
}

.city-info strong {
  display: block;
  color: var(--color-primary);
  font-size: 0.95rem;
}

.city-info span {
  font-size: 0.8rem;
  color: var(--color-muted);
}

.city-arrow {
  color: var(--color-accent);
  font-weight: bold;
}

.city-no-results {
  display: none;
  text-align: center;
  padding: 2rem;
  color: var(--color-muted);
  font-size: 1rem;
}

/* FAQ Accordion List */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  background-color: var(--color-bg-card);
}

.faq-item h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
  color: var(--color-primary);
}

.faq-item p:last-child {
  margin-bottom: 0;
}

/* Trust & Transparency Banner */
.trust-panel {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  margin: 3rem 0 1rem;
}

.trust-panel h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

/* Site Footer */
.site-footer {
  background-color: var(--color-primary);
  color: #94a3b8;
  padding: 4.5rem 0 2rem;
  margin-top: auto;
  border-top: 1px solid #1e293b;
}

.site-footer h3 {
  color: #ffffff;
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3.5rem;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 3rem;
  }
}

.footer-col p {
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  color: #cbd5e1;
  font-size: 0.9rem;
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.footer-phone-cta {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-accent);
  display: inline-block;
  margin-bottom: 0.5rem;
  text-decoration: none;
}

.footer-disclaimer {
  font-size: 0.8rem;
  color: #64748b;
  line-height: 1.5;
  margin-top: 1rem;
  border-top: 1px solid #1e293b;
  padding-top: 1rem;
}

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-size: 0.85rem;
  color: #64748b;
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-legal-links {
  display: flex;
  gap: 1.5rem;
}

.footer-legal-links a {
  color: #94a3b8;
  font-size: 0.85rem;
}

.footer-legal-links a:hover {
  color: #ffffff;
}

/* Sticky Mobile Call Bar */
.mobile-call-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background-color: var(--color-primary);
  border-top: 1px solid #1e293b;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  z-index: 999;
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.15);
}

@media (min-width: 900px) {
  .mobile-call-bar {
    display: none;
  }
}

.mobile-call-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.mobile-call-text strong {
  color: #ffffff;
  font-size: 0.95rem;
}

.mobile-call-text span {
  color: #94a3b8;
  font-size: 0.75rem;
}

.mobile-call-btn {
  background-color: var(--color-accent);
  color: #ffffff !important;
  font-weight: 700;
  padding: 0.6rem 1.15rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}