/* =====================================================
   VALDEZ AIR CONDITIONING & HEATING - Website Styles
   Theme: Professional HVAC - Cool Blues & Clean Whites
   ===================================================== */

/* ----- CSS Variables ----- */
:root {
  /* Colors - Cool Blue HVAC Theme */
  --color-primary: #1e3a5f;
  --color-primary-dark: #152a45;
  --color-accent: #0ea5e9;
  --color-accent-hover: #0284c7;
  --color-secondary: #38bdf8;
  --color-background: #f8fafc;
  --color-dark: #0f172a;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-white: #ffffff;
  --color-border: #e2e8f0;
  --color-success: #22c55e;
  --color-warning: #f59e0b;

  /* Typography */
  --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Layout */
  --container-max: 1200px;
  --header-height: 80px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.15);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
}

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

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

ul {
  list-style: none;
}

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

/* ----- Typography ----- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }

p {
  margin-bottom: 1rem;
}

p:last-child {
  margin-bottom: 0;
}

.lead {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ----- Layout ----- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

section {
  padding: var(--spacing-3xl) 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-2xl);
}

.section-header h2 {
  margin-bottom: var(--spacing-sm);
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
}

/* ----- Header ----- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: all var(--transition-base);
}

.header.scrolled {
  height: 64px;
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 2px;
  line-height: 1;
}

.logo-sub {
  font-size: 0.75rem;
  color: var(--color-accent);
  font-weight: 500;
  letter-spacing: 0.5px;
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-link {
  position: relative;
  font-weight: 500;
  color: var(--color-text);
  padding: var(--spacing-xs) 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

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

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Header CTA */
.header-cta {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  background: var(--color-accent);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}

.header-cta:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
}

.header-cta svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  padding: 8px;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ----- Hero Section ----- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero-background {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-gradient {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 50%, #0c1929 100%);
}

.hero-content {
  text-align: center;
  color: var(--color-white);
  padding: var(--spacing-2xl);
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(14, 165, 233, 0.2);
  border: 1px solid rgba(14, 165, 233, 0.4);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
}

.badge-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
}

.badge-icon svg {
  width: 100%;
  height: 100%;
  fill: var(--color-success);
}

.hero-content h1 {
  color: var(--color-white);
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: var(--spacing-md);
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-tagline {
  font-size: clamp(1.125rem, 2.5vw, 1.35rem);
  opacity: 0.9;
  font-weight: 400;
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-xl);
}

.hero-rating {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-size: 0.9375rem;
  opacity: 0.9;
}

.stars {
  display: flex;
  gap: 2px;
}

.stars svg {
  width: 20px;
  height: 20px;
  fill: #fbbf24;
}

/* ----- Buttons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition-fast);
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-secondary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-large {
  padding: var(--spacing-md) var(--spacing-2xl);
  font-size: 1.125rem;
}

.btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* ----- Services Section ----- */
.services {
  background: var(--color-white);
}

.services-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-lg);
}

.service-card {
  flex: 0 1 340px;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  transition: all var(--transition-base);
}

.service-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
}

.service-icon svg {
  width: 30px;
  height: 30px;
  fill: var(--color-white);
}

.service-card h3 {
  margin-bottom: var(--spacing-sm);
  font-size: 1.25rem;
}

.service-card p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* ----- Why Us Section ----- */
.why-us {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
}

.why-us-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.why-us-content h2 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.why-us-content .lead {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--spacing-xl);
}

.benefits-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.benefits-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  font-size: 1rem;
}

.benefits-list svg {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  fill: var(--color-success);
  margin-top: 2px;
}

.benefits-list strong {
  color: var(--color-white);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.stat-card {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  backdrop-filter: blur(10px);
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.8);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ----- Reviews Section ----- */
.reviews {
  background: var(--color-background);
}

.reviews-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.review-card {
  flex: 0 1 360px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.review-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.review-stars {
  display: flex;
  gap: 2px;
  margin-bottom: var(--spacing-md);
}

.review-stars svg {
  width: 18px;
  height: 18px;
  fill: #fbbf24;
}

.review-text {
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.review-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.author-name {
  font-weight: 600;
  color: var(--color-primary);
}

.review-date {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.reviews-cta {
  text-align: center;
}

/* ----- Contact Section ----- */
.contact {
  background: var(--color-white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

.contact-info h2 {
  margin-bottom: var(--spacing-md);
}

.contact-info .lead {
  margin-bottom: var(--spacing-xl);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-background);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.contact-method.phone {
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  color: var(--color-white);
}

.contact-method.phone:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.method-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
}

.contact-method.phone .method-icon {
  background: rgba(255, 255, 255, 0.2);
}

.contact-method:not(.phone) .method-icon {
  background: var(--color-primary);
}

.method-icon svg {
  width: 24px;
  height: 24px;
  fill: var(--color-white);
}

.method-content {
  display: flex;
  flex-direction: column;
}

.method-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  opacity: 0.8;
}

.method-value {
  font-weight: 600;
  font-size: 1.125rem;
}

.contact-method.phone .method-value {
  font-size: 1.25rem;
}

/* CTA Card */
.cta-card {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  text-align: center;
}

.cta-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  background: rgba(14, 165, 233, 0.2);
  border-radius: 50%;
  margin-bottom: var(--spacing-md);
}

.cta-icon svg {
  width: 40px;
  height: 40px;
  fill: var(--color-secondary);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.cta-card h3 {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.cta-card p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--spacing-lg);
}

/* ----- Footer ----- */
.footer {
  background: var(--color-dark);
  color: var(--color-white);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-brand .footer-logo {
  margin-bottom: var(--spacing-md);
}

.footer-brand .logo-text {
  font-size: 1.75rem;
  color: var(--color-white);
}

.footer-brand .logo-sub {
  color: var(--color-secondary);
}

.footer-tagline {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9375rem;
}

.footer h4 {
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-md);
}

.footer p,
.footer a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9375rem;
  line-height: 1.8;
}

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

.footer-bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
}

/* =====================================================
   ANIMATIONS
   ===================================================== */

.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =====================================================
   RESPONSIVE STYLES
   ===================================================== */

@media (max-width: 992px) {
  .why-us-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .stats-grid {
    max-width: 500px;
    margin: 0 auto;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }

  section {
    padding: var(--spacing-2xl) 0;
  }

  /* Mobile Navigation */
  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    gap: 0;
  }

  .nav-link {
    display: block;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
  }

  .header-cta {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  /* Hero adjustments */
  .hero {
    min-height: auto;
    padding: calc(var(--header-height) + var(--spacing-2xl)) var(--spacing-md) var(--spacing-2xl);
  }

  .hero-content {
    padding: var(--spacing-lg);
  }

  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 300px;
  }

  /* Services */
  .service-card {
    flex: 0 1 100%;
  }

  /* Stats */
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
  }

  .stat-card {
    padding: var(--spacing-lg);
  }

  .stat-number {
    font-size: 2rem;
  }

  /* Reviews */
  .review-card {
    flex: 0 1 100%;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-brand {
    grid-column: auto;
  }
}

@media (max-width: 480px) {
  .logo-text {
    font-size: 1.25rem;
  }

  .logo-sub {
    font-size: 0.625rem;
  }

  .hero-content h1 {
    font-size: 2rem;
  }

  .hero-badge {
    font-size: 0.75rem;
    padding: var(--spacing-xs) var(--spacing-sm);
  }

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