/* ==========================================================================
   NY PLUMBING — RIVERDALE, BRONX
   Core Stylesheet & Editorial Design System
   ========================================================================== */

: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;
  
  --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: 1200px;
  --container-content: 840px;
  --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, 4vw + 1rem, 3.25rem);
  margin-bottom: 1.25rem;
}

h2 {
  font-size: clamp(1.6rem, 2.5vw + 0.8rem, 2.25rem);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.35rem;
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1.35rem;
  font-size: 1.0625rem;
  line-height: 1.75;
}

p.lead {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--color-primary-light);
  font-weight: 400;
}

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

li {
  margin-bottom: 0.5rem;
  line-height: 1.65;
}

a {
  color: #0369a1;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition);
}

a:hover {
  color: #0284c7;
}

strong {
  color: var(--color-primary);
  font-weight: 600;
}

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

/* Buttons and CTAs */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.0625rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
  line-height: 1.25;
  text-align: center;
}

.btn-phone {
  background-color: var(--color-accent);
  color: #ffffff !important;
  box-shadow: 0 4px 12px rgba(234, 88, 12, 0.25);
}

.btn-phone:hover, .btn-phone:focus {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(234, 88, 12, 0.35);
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--color-primary) !important;
  border: 1px solid var(--color-border);
}

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

.btn-block {
  display: flex;
  width: 100%;
}

/* ==========================================================================
   Uniform Header & Navigation (Rule 1 Compliance)
   ========================================================================== */

.site-header {
  background-color: #ffffff;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.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;
  flex-direction: column;
}

.logo-link {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.logo-location {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 2px;
}

/* Mobile Toggle */
.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  cursor: pointer;
  color: var(--color-primary);
  font-size: 0.9375rem;
  font-weight: 600;
  gap: 6px;
}

.menu-toggle:focus {
  outline: 2px solid var(--color-accent);
}

/* Main Navigation */
.main-nav {
  display: none;
}

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

.nav-link {
  text-decoration: none;
  color: var(--color-primary-light);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition);
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link:hover, .nav-link:focus {
  color: var(--color-accent);
}

/* Strict Services Dropdown: Hidden by default (Rule 1) */
.dropdown {
  position: relative;
}

.dropdown-trigger {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary-light);
  padding: 0.5rem 0.75rem;
  display: flex;
  align-items: center;
  gap: 4px;
}

.dropdown-menu {
  display: none !important;
  list-style: none;
  margin: 0;
  padding: 0.5rem 0;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  min-width: 250px;
}

.dropdown-menu a {
  display: block;
  padding: 0.625rem 1.25rem;
  color: var(--color-primary-light);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.35;
}

.dropdown-menu a:hover, .dropdown-menu a:focus {
  background-color: var(--color-bg-subtle);
  color: var(--color-accent);
}

/* Header Call CTA Button */
.header-cta {
  display: none;
}

/* Desktop Navigation Viewport */
@media (min-width: 1024px) {
  .menu-toggle {
    display: none;
  }
  
  .main-nav {
    display: flex;
    align-items: center;
  }
  
  .nav-list {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
  
  /* Desktop Dropdown behavior */
  .dropdown {
    position: relative;
  }
  
  .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 4px;
    z-index: 1010;
  }
  
  .dropdown:hover .dropdown-menu,
  .dropdown:focus-within .dropdown-menu,
  .dropdown.is-open .dropdown-menu {
    display: block !important;
  }
  
  .header-cta {
    display: inline-flex;
    margin-left: 1rem;
    font-size: 0.9375rem;
    padding: 0.625rem 1.25rem;
  }
}

/* Mobile Nav Open State */
@media (max-width: 1023px) {
  .main-nav.is-active {
    display: block;
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: #ffffff;
    border-bottom: 2px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    padding: 1.25rem 1.5rem;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
  }
  
  .main-nav.is-active .nav-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .main-nav.is-active .dropdown-trigger {
    width: 100%;
    justify-content: space-between;
    padding: 0.75rem 0.5rem;
    font-size: 1rem;
  }
  
  .main-nav.is-active .dropdown.is-open .dropdown-menu {
    display: block !important;
    position: static;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--color-border);
    margin-left: 0.75rem;
    padding: 0.25rem 0;
  }
  
  .main-nav.is-active .dropdown.is-open .dropdown-menu a {
    padding: 0.5rem 0.75rem;
    font-size: 0.95rem;
  }

/* ==========================================================================
   Hero Section & Clean Alignment (Rule 2 Compliance: No breadcrumb clutter)
   ========================================================================== */

.hero-section {
  background: linear-gradient(180deg, #ffffff 0%, var(--color-bg-subtle) 100%);
  padding: 3.5rem 0 3.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

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

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3.5rem;
  }
}

.hero-badge {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #0369a1;
  background-color: #e0f2fe;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  margin-bottom: 1rem;
}

.hero-content h1 {
  margin-bottom: 1.25rem;
}

.hero-content p.lead {
  margin-bottom: 1.75rem;
}

.hero-cta-group {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

@media (min-width: 540px) {
  .hero-cta-group {
    flex-direction: row;
    align-items: center;
  }
}

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

/* High-Performance Edge-to-Edge Image Wrapper (Rule 3) */
.hero-image-wrapper {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  background-color: #e2e8f0;
}

.hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

/* Feature/Technical Specification Card (for pages without direct image asset) */
.hero-feature-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-md);
}

.hero-feature-card h3 {
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.feature-check-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.feature-check-list li {
  padding-left: 1.75rem;
  position: relative;
  margin-bottom: 0.85rem;
  font-size: 0.95rem;
  line-height: 1.5;
}

.feature-check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: #059669;
  font-weight: 800;
  font-size: 1.1rem;
}

/* ==========================================================================
   Editorial Content Sections (Rule 5 Compliance)
   ========================================================================== */

.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: 2.5rem;
}

.section-title-wrap h2 {
  margin-top: 0;
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--color-muted);
  margin-top: 0.5rem;
}

/* Multi-Column Feature & Diagnostic Grids */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

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

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  border-color: var(--color-border-dark);
  box-shadow: var(--shadow-md);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.85rem;
}

.card-icon {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  color: var(--color-accent);
}

/* Service Process Steps */
.process-steps {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
}

.process-step {
  display: flex;
  gap: 1.5rem;
  padding: 1.5rem;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.step-number {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.15rem;
}

.step-body h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

/* Safety & Urgent Notice Boxes */
.alert-box {
  border-radius: var(--radius-md);
  padding: 1.5rem 1.75rem;
  margin: 2rem 0;
  border-left: 5px solid;
}

.alert-gas {
  background-color: var(--color-emergency-bg);
  border-color: #dc2626;
  color: var(--color-emergency-text);
}

.alert-gas h3, .alert-gas strong {
  color: #7f1d1d;
}

.alert-warning {
  background-color: var(--color-urgent-bg);
  border-color: #d97706;
  color: var(--color-urgent-text);
}

.alert-warning h3, .alert-warning strong {
  color: #78350f;
}

.alert-box p:last-child {
  margin-bottom: 0;
}

/* Mid-Page Call To Action Banner */
.call-banner {
  background: var(--color-primary);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  margin: 3.5rem 0;
}

.call-banner h2, .call-banner h3 {
  color: #ffffff;
  margin-top: 0;
}

.call-banner p {
  color: #cbd5e1;
  max-width: 650px;
  margin: 1rem auto 2rem auto;
  font-size: 1.15rem;
}

/* FAQ Accordion / Detail Boxes */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
}

.faq-item h3 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: 1.15rem;
  color: var(--color-primary);
}

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

/* Related Services Linking Grid */
.related-services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

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

.related-card {
  display: block;
  text-decoration: none;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: all var(--transition);
}

.related-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.related-card h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.15rem;
  color: var(--color-primary);
}

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

/* ==========================================================================
   Service Areas Page Specific Styling
   ========================================================================== */

.neighborhood-block {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  margin-bottom: 2rem;
}

.neighborhood-block h2 {
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1.6rem;
  border-bottom: 2px solid var(--color-bg-subtle);
  padding-bottom: 0.75rem;
}

/* ==========================================================================
   Legal and Contact Anchors
   ========================================================================== */

.legal-section {
  background: var(--color-bg-subtle);
  border-top: 1px solid var(--color-border);
  padding: 3.5rem 0;
}

.legal-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  margin-bottom: 2rem;
}

.legal-card h2, .legal-card h3 {
  margin-top: 0;
}

/* ==========================================================================
   Site Footer
   ========================================================================== */

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

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  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: 1.5fr 1fr 1fr 1fr;
  }
}

.footer-col h3 {
  color: #ffffff;
  font-size: 1.1rem;
  margin-top: 0;
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.footer-col p {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: #94a3b8;
}

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

.footer-links li {
  margin-bottom: 0.65rem;
}

.footer-links a {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.footer-contact-info {
  margin-top: 1rem;
}

.footer-phone-cta {
  display: inline-block;
  color: #ea580c;
  font-size: 1.25rem;
  font-weight: 700;
  text-decoration: none;
  margin: 0.5rem 0;
}

.footer-phone-cta:hover {
  color: #fb923c;
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  font-size: 0.875rem;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
  }
}

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

.footer-legal-links a {
  color: #94a3b8;
}

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

/* ==========================================================================
   Sticky Mobile Call Bar (Rule 1 & Rule 12 Compliance)
   ========================================================================== */

.mobile-call-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: #ffffff;
  border-top: 1px solid var(--color-border);
  padding: 0.75rem 1rem;
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.08);
  z-index: 9990;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mobile-call-text {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.2;
}

.mobile-call-text span {
  display: block;
  font-size: 0.75rem;
  color: var(--color-muted);
  font-weight: 400;
}

.mobile-call-btn {
  background-color: var(--color-accent);
  color: #ffffff !important;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9375rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 2px 8px rgba(234, 88, 12, 0.3);
}

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

/* ==========================================================================
   Responsive & Accessibility Refinements
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}