/* ============================================================
   AirRepairTeam — Global Stylesheet
   Mobile-first. No frameworks. No build step.
   ============================================================ */

/* ---- CSS Custom Properties ---- */
:root {
  /* Colors */
  --color-hvac:        #1E40AF;   /* Cool blue — HVAC primary */
  --color-hvac-light:  #DBEAFE;
  --color-handyman:    #15803D;   /* Earth green — Handyman primary */
  --color-handyman-light: #DCFCE7;
  --color-emergency:   #DC2626;   /* Red — urgency CTAs */
  --color-emergency-light: #FEE2E2;
  --color-dark:        #111827;   /* Near-black — body text */
  --color-dark-soft:   #1F2937;
  --color-medium:      #6B7280;   /* Secondary text */
  --color-light:       #F9FAFB;   /* Page background */
  --color-white:       #FFFFFF;
  --color-border:      #E5E7EB;
  --color-accent:      #D97706;   /* Amber/gold — stars, highlights */

  /* Typography */
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  --line-height-body: 1.65;

  /* Spacing scale */
  --space-xs:  0.25rem;   /*  4px */
  --space-sm:  0.5rem;    /*  8px */
  --space-md:  1rem;      /* 16px */
  --space-lg:  1.5rem;    /* 24px */
  --space-xl:  2rem;      /* 32px */
  --space-2xl: 3rem;      /* 48px */
  --space-3xl: 4rem;      /* 64px */

  /* Layout */
  --max-width:  72rem;    /* 1152px */
  --header-height: 64px;
  --callbar-height: 48px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-stack);
  font-size: 1rem;
  line-height: var(--line-height-body);
  color: var(--color-dark);
  background: var(--color-light);
  -webkit-font-smoothing: antialiased;
  /* Offset for sticky header + callbar */
  padding-top: calc(var(--header-height) + var(--callbar-height));
}

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

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

ul, ol {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ---- Utility Classes ---- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1;
  border-radius: 0.5rem;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-hvac);
  color: var(--color-white);
}
.btn-primary:hover,
.btn-primary:focus-visible {
  background: #1E3A8A;
}

.btn-emergency {
  background: var(--color-emergency);
  color: var(--color-white);
}
.btn-emergency:hover,
.btn-emergency:focus-visible {
  background: #B91C1C;
}

.btn-handyman {
  background: var(--color-handyman);
  color: var(--color-white);
}
.btn-handyman:hover,
.btn-handyman:focus-visible {
  background: #166534;
}

.btn-outline {
  background: var(--color-white);
  color: var(--color-hvac);
  border: 2px solid var(--color-hvac);
}
.btn-outline:hover,
.btn-outline:focus-visible {
  background: var(--color-hvac-light);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-full {
  width: 100%;
}

/* ---- Phone Link ---- */
.phone-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: 700;
  color: var(--color-hvac);
  font-size: 1.125rem;
  transition: color var(--transition-fast);
}
.phone-link:hover,
.phone-link:focus-visible {
  color: var(--color-emergency);
}
.phone-link svg {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

/* ================================================================
   HEADER
   ================================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: height var(--transition-fast),
              padding var(--transition-fast);
}

.site-header.scrolled {
  --header-height: 56px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-dark);
  flex-shrink: 0;
}
.logo-icon {
  width: 2rem;
  height: 2rem;
  background: var(--color-hvac);
  color: var(--color-white);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
}

/* Desktop Nav */
.main-nav {
  display: none; /* hidden on mobile, shown via media query */
  align-items: center;
  gap: var(--space-xl);
}

.main-nav a {
  font-weight: 500;
  color: var(--color-dark-soft);
  padding: var(--space-xs) 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast),
              border-color var(--transition-fast);
}
.main-nav a:hover,
.main-nav a:focus-visible,
.main-nav a.active {
  color: var(--color-hvac);
  border-bottom-color: var(--color-hvac);
}

/* Header right group (desktop) */
.header-right {
  display: none;
  align-items: center;
  gap: var(--space-lg);
}

/* Hamburger (mobile only) */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: none;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: all 0.2s ease;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---- Mobile Nav Drawer ---- */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-white);
  z-index: 99;
  flex-direction: column;
  padding: var(--space-xl) var(--space-lg);
  gap: var(--space-sm);
  overflow-y: auto;
}

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

.mobile-nav a {
  display: block;
  padding: var(--space-md);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-dark);
  border-radius: 0.5rem;
  transition: background var(--transition-fast);
}
.mobile-nav a:hover,
.mobile-nav a:focus-visible {
  background: var(--color-light);
}

.mobile-nav .btn {
  margin-top: var(--space-md);
}

/* ================================================================
   TAP-TO-CALL BAR (mobile only)
   ================================================================ */
.callbar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  z-index: 98;
  height: var(--callbar-height);
  background: var(--color-hvac);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  gap: var(--space-sm);
  text-decoration: none;
  transition: background var(--transition-fast);
}
.callbar:hover {
  background: #1E3A8A;
}
.callbar.emergency {
  background: var(--color-emergency);
}
.callbar.emergency:hover {
  background: #B91C1C;
}
.callbar svg {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

/* ================================================================
   PAGE SECTIONS
   ================================================================ */
.page-section {
  padding: var(--space-3xl) 0;
}

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

.page-section-dark {
  background: var(--color-dark);
  color: var(--color-white);
}

.section-heading {
  font-size: 1.75rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: var(--space-xs);
  color: var(--color-dark);
  line-height: 1.2;
}

.section-subheading {
  font-size: 1.125rem;
  color: var(--color-medium);
  text-align: center;
  margin-bottom: var(--space-2xl);
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
}

/* ================================================================
   FOOTER
   ================================================================ */
.site-footer {
  background: var(--color-dark-soft);
  color: var(--color-white);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

.footer-brand p {
  color: #D1D5DB;
  margin-top: var(--space-sm);
  line-height: 1.7;
}

.footer-brand .logo {
  color: var(--color-white);
  font-size: 1.375rem;
}

.footer-nav h4 {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #9CA3AF;
  margin-bottom: var(--space-md);
}

.footer-nav a {
  display: block;
  color: #D1D5DB;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}
.footer-nav a:hover,
.footer-nav a:focus-visible {
  color: var(--color-white);
}

.footer-contact p {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: #D1D5DB;
  margin-bottom: var(--space-sm);
}
.footer-contact .phone-link {
  color: var(--color-white);
  font-size: 1.25rem;
}

.footer-service-areas {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid #374151;
  text-align: center;
  color: #9CA3AF;
  font-size: 0.9375rem;
}

.footer-service-areas span {
  color: #D1D5DB;
}

.footer-bottom {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid #374151;
  text-align: center;
  color: #6B7280;
  font-size: 0.875rem;
}

/* ================================================================
   HOMEPAGE SECTIONS
   ================================================================ */

/* -- Hero -- */
.hero-home {
  position: relative;
  overflow: hidden;
  padding: var(--space-3xl) 0;
  text-align: center;
  background: linear-gradient(135deg, #DBEAFE 0%, #DCFCE7 50%, #F9FAFB 100%);
}

.hero-home-inner {
  position: relative;
  z-index: 2;
}

.hero-home-heading {
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-dark);
  margin-bottom: var(--space-md);
}

.hero-home-sub {
  font-size: 1.0625rem;
  color: var(--color-dark-soft);
  margin-bottom: var(--space-xl);
  max-width: 28rem;
  margin-left: auto;
  margin-right: auto;
}

.hero-home-ctas {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.hero-home-phone {
  font-size: 1.125rem;
}

/* -- Trust Bar -- */
.trust-bar {
  background: var(--color-dark);
  padding: var(--space-xl) 0;
}

.trust-bar-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.trust-bar-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  color: var(--color-white);
}

.trust-bar-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.trust-bar-item strong {
  display: block;
  font-size: 1rem;
  font-weight: 700;
}

.trust-bar-item span {
  display: block;
  font-size: 0.875rem;
  color: #9CA3AF;
}

/* -- Service Pathways -- */
.pathway-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  max-width: 56rem;
  margin: 0 auto;
}

.pathway-card {
  border-radius: 0.75rem;
  padding: var(--space-xl);
  text-align: center;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-fast);
}

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

.pathway-hvac {
  border-top: 4px solid var(--color-hvac);
}

.pathway-handyman {
  border-top: 4px solid var(--color-handyman);
}

.pathway-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.pathway-card h3 {
  font-size: 1.375rem;
  font-weight: 800;
  margin-bottom: var(--space-lg);
  color: var(--color-dark);
}

.pathway-list {
  text-align: left;
  margin: 0 auto var(--space-xl);
  max-width: 16rem;
}

.pathway-list li {
  padding: var(--space-xs) 0;
  color: var(--color-dark-soft);
  font-size: 0.9375rem;
}

.pathway-list li::before {
  content: "✓";
  color: var(--color-handyman);
  font-weight: 700;
  margin-right: var(--space-sm);
}

.pathway-hvac .pathway-list li::before {
  color: var(--color-hvac);
}

/* -- Why Choose Us -- */
.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  max-width: 56rem;
  margin: 0 auto;
}

.why-card {
  text-align: center;
  padding: var(--space-lg);
}

.why-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: var(--space-sm);
}

.why-card h4 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
  color: var(--color-dark);
}

.why-card p {
  font-size: 0.9375rem;
  color: var(--color-medium);
  line-height: 1.6;
}

/* -- Service Area -- */
.area-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  max-width: 48rem;
  margin: 0 auto;
  align-items: center;
}

.area-map {
  display: flex;
  justify-content: center;
}

.area-map-placeholder {
  width: 100%;
  max-width: 18rem;
  aspect-ratio: 1;
  background: var(--color-hvac-light);
  border: 2px dashed var(--color-hvac);
  border-radius: 0.75rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  color: var(--color-hvac);
  font-weight: 700;
  font-size: 1.125rem;
}

.area-map-pin {
  font-size: 2rem;
}

.area-list-home ul {
  margin-bottom: var(--space-md);
}

.area-list-home li {
  padding: var(--space-xs) 0;
  color: var(--color-dark-soft);
  font-size: 0.9375rem;
}

.area-list-home li strong {
  color: var(--color-dark);
}

.area-note {
  font-size: 0.875rem;
  color: var(--color-medium);
  font-style: italic;
}

/* -- Testimonials -- */
.testimonial-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  max-width: 56rem;
  margin: 0 auto;
}

.testimonial-card {
  background: var(--color-light);
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  padding: var(--space-xl);
}

.testimonial-stars {
  font-size: 1rem;
  margin-bottom: var(--space-md);
}

.testimonial-card p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-dark-soft);
  margin-bottom: var(--space-md);
  font-style: italic;
}

.testimonial-card cite {
  font-style: normal;
  font-weight: 600;
  color: var(--color-dark);
  font-size: 0.9375rem;
}

/* -- Final CTA Strip -- */
.cta-strip {
  background: var(--color-dark);
  color: var(--color-white);
  padding: var(--space-3xl) 0;
  text-align: center;
}

.cta-strip h2 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: var(--space-sm);
}

.cta-strip p {
  font-size: 1.125rem;
  color: #D1D5DB;
  margin-bottom: var(--space-xl);
}

.cta-strip-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

/* ================================================================
   RESPONSIVE: Tablet+ (768px)
   ================================================================ */
@media (min-width: 768px) {
  body {
    padding-top: var(--header-height); /* no callbar on desktop */
  }

  .hamburger {
    display: none;
  }

  .main-nav {
    display: flex;
  }

  .header-right {
    display: flex;
  }

  .callbar {
    display: none; /* hidden on desktop */
  }

  .mobile-nav {
    display: none !important;
  }

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

  .section-heading {
    font-size: 2.25rem;
  }

  /* Homepage responsive */
  .hero-home-heading {
    font-size: 2.5rem;
  }

  .hero-home-ctas {
    flex-direction: row;
    justify-content: center;
  }

  .trust-bar-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .pathway-grid {
    grid-template-columns: 1fr 1fr;
  }

  .why-grid {
    grid-template-columns: 1fr 1fr;
  }

  .area-layout {
    grid-template-columns: 1fr 1fr;
  }

  .testimonial-grid {
    grid-template-columns: 1fr 1fr;
  }

  .cta-strip h2 {
    font-size: 2.25rem;
  }

  .cta-strip-buttons {
    flex-direction: row;
    justify-content: center;
  }
}

/* ================================================================
   RESPONSIVE: Desktop (1024px)
   ================================================================ */
@media (min-width: 1024px) {
  .section-heading {
    font-size: 2.75rem;
  }

  .section-subheading {
    font-size: 1.25rem;
  }

  .hero-home-heading {
    font-size: 3rem;
  }

  .why-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .testimonial-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}