/* ==========================================================================
   NJ LEAK DETECTION - PREMIUM DESIGN SYSTEM (CSS TOKENS & FOUNDATIONS)
   ========================================================================== */

:root {
  /* Color Palette - Authority, Trust, Precision */
  --color-primary: #0f1e36;       /* Deep Authority Navy */
  --color-primary-light: #182c4d; /* Elevated Navy */
  --color-primary-dark: #091322;  /* Slate Obsidian */
  
  --color-accent: #0284c7;        /* Precision Tech Cyan / Blue */
  --color-accent-hover: #0369a1;  /* Darker Accent */
  --color-accent-light: #e0f2fe;  /* Ice Blue Tint */
  --color-accent-subtle: #f0f9ff; /* Subtle Blue Wash */
  
  --color-emergency: #b91c1c;     /* Alert Red */
  --color-emergency-bg: #fef2f2;  /* Alert Tint */
  --color-emergency-border: #fecaca;
  
  --color-success: #059669;      /* Verification Green */
  --color-success-bg: #ecfdf5;
  
  /* Neutral Grayscale */
  --color-bg-body: #f8fafc;       /* Crisp Warm White/Gray */
  --color-bg-surface: #ffffff;    /* Card Surface */
  --color-bg-surface-alt: #f1f5f9;/* Section Background */
  --color-bg-subtle: #e2e8f0;     /* Border / Divider */
  
  --color-text-main: #1e293b;     /* Deep Slate Body Text */
  --color-text-muted: #64748b;    /* Secondary Text */
  --color-text-light: #94a3b8;    /* Caption Text */
  --color-text-inverse: #ffffff;  /* White on Navy */

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Spacing System */
  --space-2xs: 0.25rem;  /* 4px */
  --space-xs: 0.5rem;    /* 8px */
  --space-sm: 0.75rem;   /* 12px */
  --space-md: 1rem;      /* 16px */
  --space-lg: 1.5rem;    /* 24px */
  --space-xl: 2rem;      /* 32px */
  --space-2xl: 3rem;     /* 48px */
  --space-3xl: 4.5rem;   /* 72px */
  --space-4xl: 6rem;     /* 96px */

  /* Elevation & Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(15, 30, 54, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 30, 54, 0.07), 0 2px 4px -2px rgba(15, 30, 54, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(15, 30, 54, 0.08), 0 4px 6px -4px rgba(15, 30, 54, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(15, 30, 54, 0.1), 0 8px 10px -6px rgba(15, 30, 54, 0.04);
  --shadow-card-hover: 0 12px 28px -4px rgba(2, 132, 199, 0.12), 0 4px 10px -2px rgba(15, 30, 54, 0.05);

  /* Borders & Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  --border-subtle: 1px solid #e2e8f0;
  --border-accent: 1px solid #bae6fd;

  /* Layout Container */
  --container-max: 1240px;
  --container-narrow: 840px;
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */

*, *::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-body);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

h1, h2, h3, h4, h5, h6 {
  color: var(--color-primary);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 4vw + 1rem, 3.25rem); }
h2 { font-size: clamp(1.6rem, 2.5vw + 0.75rem, 2.25rem); }
h3 { font-size: clamp(1.25rem, 1.5vw + 0.5rem, 1.5rem); }
h4 { font-size: 1.15rem; }

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-main);
}

p.lead {
  font-size: 1.18rem;
  line-height: 1.65;
  color: var(--color-text-muted);
}

/* ==========================================================================
   LAYOUT UTILITIES
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

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

.section-dark {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}
.section-dark h1, .section-dark h2, .section-dark h3 {
  color: var(--color-text-inverse);
}
.section-dark p {
  color: #cbd5e1;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-2xl);
}

.section-tag {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  background-color: var(--color-accent-light);
  color: var(--color-accent-hover);
  border-radius: var(--radius-full);
  font-size: 0.825rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-sm);
}

.section-tag-dark {
  background-color: rgba(2, 132, 199, 0.2);
  color: #7dd3fc;
}

.grid {
  display: grid;
  gap: var(--space-xl);
}
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: var(--border-subtle);
  transition: all 0.2s ease;
}

.header-topbar {
  background-color: var(--color-primary);
  color: #e2e8f0;
  font-size: 0.85rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.header-topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.topbar-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 500;
}
.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: #22c55e;
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.3);
}

.header-main .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 76px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-primary);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}
.brand-logo svg {
  color: var(--color-accent);
}
.brand-subtitle {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  display: block;
  margin-top: -2px;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
}
.nav-item {
  position: relative;
}
.nav-link {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.5rem 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.nav-link:hover {
  color: var(--color-accent);
}

/* Nav Dropdown */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  width: 260px;
  background-color: var(--color-bg-surface);
  border: var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.2s ease;
  z-index: 1010;
  list-style: none;
}
.nav-item:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown-item a {
  display: block;
  padding: 0.65rem 1rem;
  color: var(--color-text-main);
  font-size: 0.88rem;
  font-weight: 500;
}
.dropdown-item a:hover {
  background-color: var(--color-accent-subtle);
  color: var(--color-accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.phone-cta-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  color: var(--color-primary);
  font-size: 1.05rem;
}
.phone-cta-link:hover {
  color: var(--color-accent);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-primary);
}

/* ==========================================================================
   BUTTONS & CTAS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}
.btn-primary {
  background-color: var(--color-accent);
  color: #ffffff;
  box-shadow: 0 2px 4px rgba(2, 132, 199, 0.2);
}
.btn-primary:hover {
  background-color: var(--color-accent-hover);
  color: #ffffff;
  box-shadow: 0 4px 8px rgba(2, 132, 199, 0.3);
}

.btn-emergency {
  background-color: var(--color-emergency);
  color: #ffffff;
}
.btn-emergency:hover {
  background-color: #991b1b;
  color: #ffffff;
}

.btn-secondary {
  background-color: var(--color-bg-surface);
  color: var(--color-primary);
  border: var(--border-subtle);
}
.btn-secondary:hover {
  background-color: var(--color-bg-surface-alt);
  border-color: #cbd5e1;
}

.btn-dark {
  background-color: var(--color-primary);
  color: #ffffff;
}
.btn-dark:hover {
  background-color: var(--color-primary-light);
  color: #ffffff;
}

.btn-lg {
  padding: 0.95rem 1.85rem;
  font-size: 1.05rem;
}

/* ==========================================================================
   CARDS & COMPONENTS
   ========================================================================== */

.card {
  background-color: var(--color-bg-surface);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
}
.card:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: #bae6fd;
  transform: translateY(-3px);
}

.service-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.service-card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background-color: var(--color-accent-light);
  color: var(--color-accent-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}
.service-card h3 {
  margin-bottom: var(--space-xs);
}
.service-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  flex-grow: 1;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.92rem;
  margin-top: var(--space-md);
}

/* Problem / Symptom Cards */
.problem-item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-surface);
  border: var(--border-subtle);
}
.problem-icon {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background-color: var(--color-emergency-bg);
  color: var(--color-emergency);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Process Timeline */
.process-step {
  display: flex;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}
.step-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background-color: var(--color-primary);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.15rem;
}

/* Verified Proof Box */
.proof-box {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #ffffff;
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  position: relative;
  overflow: hidden;
}
.proof-stat {
  font-size: 2.5rem;
  font-weight: 800;
  color: #38bdf8;
  line-height: 1;
  margin-bottom: 0.25rem;
}
.proof-label {
  font-size: 0.9rem;
  color: #cbd5e1;
}

/* FAQ Accordion */
.faq-item {
  border: var(--border-subtle);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-surface);
  margin-bottom: var(--space-sm);
  overflow: hidden;
}
.faq-question {
  width: 100%;
  text-align: left;
  padding: var(--space-lg);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
  background: none;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}
.faq-answer {
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer {
  background-color: var(--color-primary);
  color: #94a3b8;
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}
.footer-col h4 {
  color: #ffffff;
  font-size: 1rem;
  margin-bottom: var(--space-md);
}
.footer-links {
  list-style: none;
}
.footer-links li {
  margin-bottom: 0.5rem;
}
.footer-links a {
  color: #94a3b8;
  font-size: 0.9rem;
}
.footer-links a:hover {
  color: #38bdf8;
}
.footer-bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

/* ==========================================================================
   PERSISTENT MOBILE ACTION BAR
   ========================================================================== */

.mobile-action-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: #ffffff;
  box-shadow: 0 -4px 12px rgba(15, 30, 54, 0.12);
  padding: 0.65rem var(--space-md);
  z-index: 999;
  border-top: var(--border-subtle);
}
.mobile-action-bar .btn {
  width: 100%;
}

/* ==========================================================================
   RESPONSIVE QUERIES
   ========================================================================== */

@media (max-width: 992px) {
  .nav-desktop {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .header-actions .btn-primary {
    display: none;
  }
}

@media (max-width: 768px) {
  .mobile-action-bar {
    display: block;
  }
  body {
    padding-bottom: 60px; /* Space for sticky bar */
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}