/* ==========================================================================
   NY PLUMBING — KINGSBRIDGE HEIGHTS, BRONX, NEW YORK CITY
   Master Stylesheet & Responsive Local Service Design System
   Optimized for High Performance, WCAG AA Accessibility & Conversion
   ========================================================================== */

:root {
  /* Brand Palette: Deep Bronx Slate Navy & Industrial Flame Orange */
  --color-primary: #0e2038;
  --color-primary-dark: #071220;
  --color-primary-light: #1a3c66;
  --color-primary-hover: #122c4d;
  
  --color-accent: #ea580c;
  --color-accent-hover: #c2410c;
  --color-accent-light: #ffedd5;
  --color-accent-dark: #9a3412;
  
  /* Alert & Status Colors */
  --color-danger: #b91c1c;
  --color-danger-bg: #fef2f2;
  --color-danger-border: #fca5a5;
  --color-success: #15803d;
  --color-success-bg: #f0fdf4;

  /* Typography & Neutrals */
  --color-text-main: #0f172a;
  --color-text-muted: #334155;
  --color-text-light: #64748b;
  --color-bg-white: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-bg-card: #ffffff;
  --color-border: #e2e8f0;
  --color-border-dark: #cbd5e1;

  /* Font Stacks */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-heading: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* Elevation Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

  /* Border Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Fluid Spacing Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  --header-height: 74px;
}

/* 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: 1.6;
  color: var(--color-text-main);
  background-color: var(--color-bg-white);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-bottom: 70px;
}

@media (min-width: 992px) {
  body {
    padding-bottom: 0;
  }
}

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

a {
  color: var(--color-primary-light);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.15s ease;
}

a:hover,
a:focus-visible {
  color: var(--color-accent);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* Containers */
.container {
  width: 100%;
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

/* Top Notification / Dispatch Strip */
.top-bar {
  background-color: var(--color-primary-dark);
  color: #cbd5e1;
  font-size: 0.85rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.top-bar__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.top-bar__tag {
  font-weight: 500;
  letter-spacing: 0.02em;
}

.top-bar__phone {
  color: var(--color-accent-light);
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.top-bar__phone:hover {
  color: #ffffff;
  text-decoration: underline;
}

/* Header & Navigation */
.header {
  background-color: #ffffff;
  border-bottom: 2px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo {
  display: flex;
  flex-direction: column;
  text-decoration: none;
}

.logo__brand {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.logo__location {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Navigation List */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
}

.nav-toggle__bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-primary);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
}

.nav__item {
  position: relative;
}

.nav__link {
  color: var(--color-text-main);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.5rem 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  transition: color 0.15s ease;
}

.nav__link:hover,
.nav__link:focus,
.nav__link--active {
  color: var(--color-accent);
}

.nav__link--active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-accent);
}

/* Dropdown Menu */
.dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background-color: #ffffff;
  min-width: 275px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  padding: 0.5rem 0;
  list-style: none;
  z-index: 1010;
}

.nav__item--has-dropdown:hover .dropdown,
.nav__item--has-dropdown:focus-within .dropdown,
.nav__item--has-dropdown.is-open .dropdown {
  display: block;
}

.dropdown__item {
  margin: 0;
}

.dropdown__link {
  display: block;
  padding: 0.55rem 1.25rem;
  color: var(--color-text-main);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.dropdown__link:hover,
.dropdown__link:focus {
  background-color: var(--color-bg-alt);
  color: var(--color-accent);
}

/* Primary Conversion Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background-color 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
  cursor: pointer;
  border: none;
  line-height: 1.2;
}

.btn--primary {
  background-color: var(--color-accent);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  color: #ffffff;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--lg {
  padding: 0.85rem 1.75rem;
  font-size: 1.05rem;
}

/* Breadcrumbs */
.breadcrumb-bar {
  background-color: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  padding: 0.65rem 0;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  list-style: none;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.breadcrumbs__item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.breadcrumbs__item:not(:last-child)::after {
  content: "/";
  color: var(--color-text-light);
}

.breadcrumbs__link {
  color: var(--color-text-muted);
  text-decoration: none;
}

.breadcrumbs__link:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

/* Hero Section */
.hero {
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
  padding: 3rem 0;
  border-bottom: 1px solid var(--color-border);
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
  align-items: center;
}

@media (min-width: 992px) {
  .hero__inner {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

.hero__content h1 {
  font-size: clamp(2rem, 3.8vw, 2.85rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.15;
  margin-top: 0.5rem;
  margin-bottom: 1rem;
}

.hero__lead {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.hero__trust-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.hero__trust-icon {
  color: var(--color-success);
  font-weight: bold;
}

/* Page Header for Inner Pages */
.page-header {
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
}

.page-header__title {
  font-size: clamp(1.85rem, 3.5vw, 2.75rem);
  font-weight: 800;
  color: var(--color-primary);
  margin-top: 0.5rem;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.page-header__subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Sections */
.section {
  padding: 3.5rem 0;
}

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

.section--dark {
  background-color: var(--color-primary);
  color: #ffffff;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 2.5rem;
}

.section-header h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  color: var(--color-primary);
  margin-top: 0.4rem;
  margin-bottom: 0.6rem;
  font-weight: 700;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.6;
}

/* Grids */
.grid {
  display: grid;
  gap: 1.75rem;
}

.grid--2col {
  grid-template-columns: 1fr;
}

.grid--3col {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid--2col {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid--3col {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .grid--3col {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Cards */
.card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

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

.card--accent {
  border-top: 4px solid var(--color-accent);
}

.card--primary {
  border-top: 4px solid var(--color-primary);
}

.card--danger {
  border-left: 4px solid var(--color-danger);
  background-color: var(--color-danger-bg);
  border-color: var(--color-danger-border);
}

.card__icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.card__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.card__title a {
  color: inherit;
  text-decoration: none;
}

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

.card__text {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Badges */
.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  background-color: #e2e8f0;
  color: var(--color-primary);
}

.badge--accent {
  background-color: var(--color-accent-light);
  color: var(--color-accent-dark);
}

.badge--danger {
  background-color: var(--color-danger-bg);
  color: var(--color-danger);
  border: 1px solid var(--color-danger-border);
}

/* Callout Box */
.cta-box {
  background-color: var(--color-bg-alt);
  border: 2px dashed var(--color-border-dark);
  border-radius: var(--radius-md);
  padding: 2rem;
  text-align: center;
  margin: 2.5rem 0;
}

.cta-box__title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.4rem;
}

.cta-box__text {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Image Framing */
.image-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  background-color: #ffffff;
}

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

/* FAQs */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: #ffffff;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 1.25rem 1.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.faq-question::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--color-text-light);
  transition: transform 0.2s ease;
}

.faq-item.active .faq-question::after {
  content: "−";
}

.faq-answer {
  display: none;
  padding: 0 1.5rem 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  display: block;
}

/* Footer */
.footer {
  background-color: var(--color-primary-dark);
  color: #cbd5e1;
  padding: 4rem 0 2rem;
  margin-top: auto;
  border-top: 3px solid var(--color-accent);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }
}

.footer__brand {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 0.75rem;
}

.footer__text {
  color: #94a3b8;
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.footer__link {
  color: #cbd5e1;
  text-decoration: none;
  transition: color 0.15s ease;
}

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

.footer__badge {
  display: inline-block;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: #cbd5e1;
  line-height: 1.5;
  margin-top: 0.5rem;
}

.footer__heading {
  display: block;
  color: #ffffff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

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

.footer__list li {
  margin-bottom: 0.45rem;
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  text-align: center;
  color: #94a3b8;
  font-size: 0.85rem;
}

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

.footer__bottom a:hover {
  text-decoration: underline;
}

/* Mobile Sticky Call Bar */
.mobile-call-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-primary-dark);
  padding: 0.75rem 1rem;
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.25);
  z-index: 1050;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (min-width: 992px) {
  .mobile-call-bar {
    display: none;
  }
}

.mobile-call-bar__inner {
  width: 100%;
  display: flex;
  justify-content: center;
}

.mobile-call-bar__btn {
  width: 100%;
  max-width: 420px;
  font-size: 1.05rem;
  padding: 0.8rem 1.25rem;
}

/* Mobile Navigation Collapse & Touch Behavior */
@media (max-width: 991px) {
  .nav-toggle {
    display: flex;
  }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: #ffffff;
    flex-direction: column;
    align-items: stretch;
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    border-bottom: 2px solid var(--color-border);
    gap: 1rem;
  }

  .nav.is-open {
    display: flex;
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }

  .dropdown {
    position: static;
    box-shadow: none;
    border: none;
    background-color: var(--color-bg-alt);
    padding-left: 1rem;
  }

  .header__cta {
    margin-top: 0.5rem;
  }

  .header__cta .btn {
    width: 100%;
  }
}