/* 
  AirSmart Premium Website CSS Stylesheet
  Design System Tokens & Layout Components
*/

/* --- 1. GOOGLE FONTS IMPORT --- */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&display=swap');

/* --- 2. CSS VARIABLES & DESIGN TOKENS --- */
:root {
  /* Colors */
  --color-primary-blue: #1B7EC2;
  --color-primary-green: #8DC63F;
  --color-primary-green-hover: #6AAF2E;
  --color-navy-dark: #0A1F3D;
  --color-navy-darker: #051226;
  --color-charcoal: #1A1A2E;
  --color-slate: #4A5568;
  --color-ice-blue: #D6EEFF;
  --color-pale-green: #E8F5D0;
  --color-off-white: #F8FAFC;
  --color-pure-white: #FFFFFF;
  --color-emergency-red: #C0392B;
  --color-emergency-red-hover: #A93226;
  --color-accent-orange: #FF5E14;
  --color-accent-orange-hover: #E04D0A;
  --color-success: #27AE60;
  --color-warning: #F39C12;
  --color-grey-light: #CBD5E0;
  --color-grey-border: #E2E8F0;

  
  /* RGB equivalents for transparency use */
  --rgb-primary-blue: 27, 126, 194;
  --rgb-primary-green: 141, 198, 63;
  --rgb-accent-orange: 255, 94, 20;
  --rgb-navy-dark: 10, 31, 61;
  --rgb-navy-darker: 5, 18, 38;

  /* Typography */
  --font-display: 'Poppins', sans-serif;
  --font-body: 'Poppins', sans-serif;

  /* Spacing */
  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-xxl: 64px;
  --space-section: 96px;

  /* Border Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-xxl: 20px;
  --radius-circle: 50%;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(27, 126, 194, 0.08);
  --shadow-hover: 0 12px 32px rgba(27, 126, 194, 0.18);
  --shadow-button: 0 4px 14px rgba(27, 126, 194, 0.3);
  --shadow-green-button: 0 4px 14px rgba(141, 198, 63, 0.35);

  /* Transitions */
  --transition-fast: all 0.2s ease;
  --transition-normal: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s ease-out;

  /* Container */
  --max-width: 1280px;
}

/* --- 3. RESET & BASE --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--color-slate);
  background-color: var(--color-pure-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--color-charcoal);
  font-weight: 700;
  line-height: 1.2;
}

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

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}

/* --- 4. LAYOUT SYSTEM --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

@media (min-width: 1024px) {
  .container {
    padding-left: 80px;
    padding-right: 80px;
  }
}

.grid {
  display: grid;
  gap: var(--space-lg);
}

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

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

.grid-4 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Section styling */
section {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
  position: relative;
}

.section-label {
  display: block;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-primary-blue);
  margin-bottom: var(--space-xs);
}

.section-label.light {
  color: var(--color-primary-green);
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: var(--space-md);
  position: relative;
  display: inline-block;
  padding-bottom: 8px;
}

.section-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 60px;
  height: 3px;
  background-color: var(--color-primary-blue);
}

.section-title.light {
  color: var(--color-pure-white);
}

.section-title.light::after {
  background-color: var(--color-primary-green);
}

.section-desc {
  font-size: 18px;
  max-width: 680px;
  color: var(--color-slate);
  margin-bottom: var(--space-xl);
}

.section-desc.light {
  color: rgba(255, 255, 255, 0.8);
}

/* Alternating Background Colors */
.bg-off-white { background-color: var(--color-off-white); }
.bg-white { background-color: var(--color-pure-white); }
.bg-navy { background-color: var(--color-navy-dark); color: var(--color-pure-white); }
.bg-ice-blue { background-color: rgba(214, 238, 255, 0.3); }

/* --- 5. EMERGENCY STRIP & HEADER --- */
.emergency-strip {
  background-color: var(--color-emergency-red);
  color: var(--color-pure-white);
  padding: 10px 0;
  text-align: center;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5px;
  z-index: 1000;
  position: relative;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.emergency-strip a {
  color: var(--color-pure-white);
  text-decoration: underline;
  margin-left: var(--space-xs);
}

header {
  width: 100%;
  position: absolute;
  top: 44px; /* height of emergency strip */
  left: 0;
  z-index: 999;
  transition: var(--transition-normal);
}

header.sticky {
  position: fixed;
  top: 0;
  background-color: rgba(10, 31, 61, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(141, 198, 63, 0.2);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

header.sticky .nav-container {
  padding-top: 12px;
  padding-bottom: 12px;
}

header.sticky .nav-link {
  color: var(--color-pure-white);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  transition: var(--transition-normal);
}

.logo {
  display: flex;
  align-items: center;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  color: var(--color-pure-white);
  letter-spacing: -0.5px;
}

.logo span.blue {
  color: var(--color-primary-blue);
}

.logo span.green {
  color: var(--color-primary-green);
}

.nav-menu {
  display: none;
  list-style: none;
  align-items: center;
  gap: var(--space-md);
}

@media (min-width: 1024px) {
  .nav-menu {
    display: flex;
  }
}

.nav-item {
  position: relative;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link:hover {
  color: var(--color-primary-green);
}

/* Dropdown styling */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background-color: var(--color-pure-white);
  min-width: 240px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hover);
  padding: var(--space-sm);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-fast);
  z-index: 100;
  border-top: 3px solid var(--color-primary-blue);
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-item {
  list-style: none;
}

.nav-dropdown-link {
  display: block;
  padding: 10px 12px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-charcoal);
  border-radius: var(--radius-md);
  font-weight: 500;
}

.nav-dropdown-link:hover {
  background-color: var(--color-off-white);
  color: var(--color-primary-blue);
  padding-left: 16px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.phone-nav {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-primary-green);
  display: none;
  font-size: 15px;
}

@media (min-width: 1200px) {
  .phone-nav {
    display: block;
  }
}

/* Hamburger toggle */
.hamburger-toggle {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  z-index: 1001;
}

@media (min-width: 1024px) {
  .hamburger-toggle {
    display: none;
  }
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background-color: var(--color-primary-green);
  transition: var(--transition-fast);
}

.hamburger-toggle.active .hamburger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.hamburger-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
}
.hamburger-toggle.active .hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 320px;
  height: 100vh;
  background-color: var(--color-navy-darker);
  box-shadow: -10px 0 30px rgba(0,0,0,0.5);
  padding: 80px 30px 40px;
  z-index: 1000;
  transition: var(--transition-normal);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.mobile-drawer.active {
  right: 0;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mobile-nav-link {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-pure-white);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mobile-nav-link:hover, .mobile-nav-link.active {
  color: var(--color-primary-green);
}

.mobile-submenu {
  list-style: none;
  padding-left: var(--space-sm);
  margin-top: var(--space-xs);
  display: none;
  flex-direction: column;
  gap: var(--space-xs);
}

.mobile-submenu.active {
  display: flex;
}

.mobile-submenu-link {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

.mobile-drawer-bottom {
  margin-top: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

/* --- 6. BUTTONS --- */
.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.btn-green {
  background-color: var(--color-primary-green);
  color: var(--color-navy-dark);
  box-shadow: var(--shadow-green-button);
}

.btn-green:hover {
  background-color: var(--color-primary-green-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(141, 198, 63, 0.45);
}

.btn-blue {
  background-color: var(--color-primary-blue);
  color: var(--color-pure-white);
  box-shadow: var(--shadow-button);
}

.btn-blue:hover {
  background-color: #1466A0;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(27, 126, 194, 0.45);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--color-pure-white);
  color: var(--color-pure-white);
}

.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

.btn-emergency {
  background-color: var(--color-emergency-red);
  color: var(--color-pure-white);
  font-size: 13px;
  padding: 10px 20px;
}

.btn-emergency:hover {
  background-color: var(--color-emergency-red-hover);
  box-shadow: 0 4px 14px rgba(192, 57, 43, 0.4);
}

.btn-full {
  width: 100%;
}

/* --- 7. HERO SECTION & LEAD FORM --- */
.hero-section {
  padding-top: 180px;
  padding-bottom: var(--space-section);
  background-color: var(--color-navy-dark);
  background-image: linear-gradient(135deg, var(--color-navy-dark) 40%, var(--color-navy-darker) 100%);
  overflow: hidden;
}

.hero-overlay-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
  mix-blend-mode: overlay;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
  position: relative;
  z-index: 2;
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  background-color: rgba(141, 198, 63, 0.12);
  border: 1px solid var(--color-primary-green);
  color: var(--color-primary-green);
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: var(--space-md);
  box-shadow: var(--shadow-sm);
}

.hero-h1 {
  font-size: 40px;
  font-weight: 800;
  color: var(--color-pure-white);
  letter-spacing: -0.5px;
  margin-bottom: var(--space-md);
  line-height: 1.15;
}

@media (min-width: 768px) {
  .hero-h1 {
    font-size: 52px;
  }
}

.hero-subheadline {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--space-lg);
  max-width: 580px;
}

.hero-ctas {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

@media (min-width: 576px) {
  .hero-ctas {
    flex-direction: row;
    gap: var(--space-md);
  }
}

.hero-emergency-notice {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background-color: rgba(192, 57, 43, 0.15);
  border-left: 3px solid var(--color-emergency-red);
  padding: 10px 16px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 14px;
}

.hero-emergency-notice strong {
  color: var(--color-pure-white);
}

/* Lead Form Card */
.lead-form-card {
  background-color: var(--color-pure-white);
  border-radius: var(--radius-xxl);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  padding: var(--space-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.lead-form-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-charcoal);
  margin-bottom: var(--space-xxs);
}

.lead-form-sub {
  font-size: 14px;
  color: var(--color-slate);
  margin-bottom: var(--space-md);
}

.form-group {
  margin-bottom: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 576px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-slate);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  background-color: var(--color-off-white);
  border: 1.5px solid var(--color-grey-light);
  border-radius: var(--radius-md);
  padding: 11px 16px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-charcoal);
  transition: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-primary-blue);
  background-color: var(--color-pure-white);
  box-shadow: 0 0 0 3px rgba(27, 126, 194, 0.15);
}

.form-privacy-note {
  font-size: 12px;
  color: var(--color-slate);
  text-align: center;
  margin-top: 12px;
}

/* Stats Bar at bottom of Hero */
.hero-stats-bar {
  background-color: rgba(255, 255, 255, 0.05);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 24px 0;
  position: relative;
  z-index: 2;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-item {
  text-align: center;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item:last-child {
  border-right: none;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 800;
  color: var(--color-primary-green);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
}

/* --- 8. TRUSTED BY / SOCIAL PROOF --- */
.trusted-by-section {
  padding: 60px 0;
  border-bottom: 1px solid var(--color-grey-border);
}

.trusted-title {
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-slate);
  margin-bottom: var(--space-md);
}

.logos-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-xl);
}

.logo-item {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: #A0AEC0;
  background-color: var(--color-off-white);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  border: 1px dashed var(--color-grey-light);
  min-width: 160px;
  text-align: center;
}

.industry-tags-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
}

.industry-tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary-blue);
  background-color: rgba(27, 126, 194, 0.08);
  padding: 6px 14px;
  border-radius: 50px;
}

/* --- 9. ABOUT PREVIEW --- */
.about-preview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
}

@media (min-width: 1024px) {
  .about-preview-grid {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.about-bullets {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  margin-bottom: var(--space-lg);
}

@media (min-width: 576px) {
  .about-bullets {
    grid-template-columns: 1fr 1fr;
  }
}

.about-bullet-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-xs);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-charcoal);
}

.about-bullet-item::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  font-size: 16px;
}

.experience-callout-box {
  background-color: var(--color-ice-blue);
  border-left: 4px solid var(--color-primary-blue);
  padding: var(--space-md);
  border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
  box-shadow: var(--shadow-sm);
}

.experience-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-charcoal);
  margin-bottom: var(--space-xs);
}

.experience-text {
  font-size: 14px;
  color: var(--color-slate);
}

/* --- 10. SERVICES GRID & CARDS --- */
.service-card {
  background-color: var(--color-pure-white);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-grey-border);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.service-card-icon {
  width: 56px;
  height: 56px;
  background-color: rgba(27, 126, 194, 0.08);
  border-radius: var(--radius-lg);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 24px;
  color: var(--color-primary-blue);
  margin-bottom: var(--space-md);
  transition: var(--transition-fast);
}

.service-card-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.service-card-desc {
  font-size: 14px;
  color: var(--color-slate);
  margin-bottom: var(--space-md);
  flex-grow: 1;
}

.service-card-link {
  font-weight: 700;
  font-size: 14px;
  color: var(--color-primary-blue);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xxs);
}

.service-card-link span {
  transition: var(--transition-fast);
}

/* Card hover animation */
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-left: 3px solid var(--color-primary-blue);
}

.service-card:hover .service-card-icon {
  background-color: var(--color-primary-blue);
  color: var(--color-pure-white);
}

.service-card:hover .service-card-link span {
  transform: translateX(4px);
}

/* --- 11. WHY CHOOSE AIRSMART (DARK SECTION) --- */
.why-feature-card {
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: var(--space-lg);
  border-radius: var(--radius-xl);
  transition: var(--transition-normal);
}

.why-feature-card:hover {
  background-color: rgba(27, 126, 194, 0.12);
  border-color: rgba(27, 126, 194, 0.3);
  transform: translateY(-2px);
}

.why-icon {
  font-size: 24px;
  margin-bottom: var(--space-sm);
  display: block;
}

.why-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-pure-white);
  margin-bottom: var(--space-xs);
}

.why-text {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
}

/* --- 12. 4-STEP WORKING PROCESS --- */
.process-timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  position: relative;
  margin-top: var(--space-xl);
}

@media (min-width: 1024px) {
  .process-timeline {
    flex-direction: row;
    gap: var(--space-md);
  }
  
  .process-timeline::after {
    content: '';
    position: absolute;
    top: 40px;
    left: 40px;
    right: 40px;
    height: 2px;
    border-top: 2px dashed rgba(27, 126, 194, 0.3);
    z-index: 1;
  }
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 2;
  flex: 1;
}

.process-step-num-container {
  width: 80px;
  height: 80px;
  background-color: var(--color-primary-blue);
  color: var(--color-pure-white);
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 800;
  border-radius: var(--radius-circle);
  display: inline-flex;
  justify-content: center;
  align-items: center;
  margin-bottom: var(--space-sm);
  border: 4px solid var(--color-ice-blue);
  box-shadow: var(--shadow-sm);
}

.process-step:nth-child(even) .process-step-num-container {
  background-color: var(--color-primary-green);
  border-color: var(--color-pale-green);
}

.process-step-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.process-step-desc {
  font-size: 14px;
  color: var(--color-slate);
  max-width: 260px;
  margin-left: auto;
  margin-right: auto;
}

/* --- 13. INDUSTRIES WE SERVE --- */
.industry-card {
  position: relative;
  height: 240px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

.industry-card-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-navy-dark);
  transition: var(--transition-normal);
  z-index: 1;
}

.industry-card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(10, 31, 61, 0.2) 0%, rgba(10, 31, 61, 0.85) 100%);
  z-index: 2;
  transition: var(--transition-normal);
}

.industry-card-content {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: var(--space-md);
  z-index: 3;
  color: var(--color-pure-white);
}

.industry-card-icon {
  font-size: 20px;
  margin-bottom: var(--space-xs);
  display: block;
}

.industry-card-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-pure-white);
  margin-bottom: var(--space-xxs);
}

.industry-card-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
  opacity: 0;
  transform: translateY(10px);
  transition: var(--transition-normal);
}

.industry-card:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-hover);
}

.industry-card:hover .industry-card-overlay {
  background: linear-gradient(to bottom, rgba(10, 31, 61, 0.1) 0%, rgba(10, 31, 61, 0.92) 100%);
}

.industry-card:hover .industry-card-desc {
  opacity: 1;
  transform: translateY(0);
}

/* --- 14. TESTIMONIALS --- */
.testimonial-card {
  background-color: var(--color-pure-white);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-grey-border);
  position: relative;
  display: flex;
  flex-direction: column;
}

.testimonial-quote-icon {
  font-size: 64px;
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--color-primary-blue);
  opacity: 0.08;
  position: absolute;
  top: 10px;
  left: 20px;
  pointer-events: none;
}

.testimonial-stars {
  color: var(--color-warning);
  font-size: 16px;
  margin-bottom: var(--space-sm);
}

.testimonial-text {
  font-size: 15px;
  font-style: italic;
  color: var(--color-slate);
  line-height: 1.6;
  margin-bottom: var(--space-md);
  flex-grow: 1;
  position: relative;
  z-index: 2;
}

.testimonial-divider {
  height: 1px;
  background-color: var(--color-grey-border);
  margin-bottom: var(--space-sm);
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-circle);
  background-color: var(--color-ice-blue);
  color: var(--color-primary-blue);
  font-family: var(--font-display);
  font-weight: 700;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 14px;
}

.testimonial-user-info h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-charcoal);
}

.testimonial-user-info p {
  font-size: 12px;
  color: var(--color-slate);
}

/* --- 15. FAQ ACCORDION --- */
.faq-accordion {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  margin-top: var(--space-xl);
}

.faq-item {
  border-bottom: 1px solid var(--color-grey-border);
  padding: 16px 0;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  color: var(--color-charcoal);
  cursor: pointer;
  padding: 8px 0;
}

.faq-question:hover {
  color: var(--color-primary-blue);
}

.faq-toggle-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-circle);
  border: 1.5px solid var(--color-primary-blue);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 18px;
  color: var(--color-primary-blue);
  transition: var(--transition-normal);
  flex-shrink: 0;
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
  background-color: var(--color-primary-blue);
  color: var(--color-pure-white);
}

.faq-item.active .faq-question {
  color: var(--color-primary-blue);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.2s ease-out;
  padding-right: 28px;
}

.faq-answer p {
  padding-top: var(--space-xs);
  padding-bottom: var(--space-xs);
  font-size: 15px;
  color: var(--color-slate);
  line-height: 1.6;
}

/* --- 16. BLOG PREVIEW CARDS --- */
.blog-card {
  background-color: var(--color-pure-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-grey-border);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.blog-card-img-placeholder {
  height: 200px;
  background-color: var(--color-navy-dark);
  background-image: linear-gradient(135deg, var(--color-navy-dark) 0%, var(--color-primary-blue) 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  color: rgba(255, 255, 255, 0.15);
  font-size: 48px;
  font-weight: 800;
  position: relative;
  overflow: hidden;
}

.blog-card-img-placeholder::after {
  content: 'AirSmart HVAC';
  position: absolute;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  bottom: 12px;
  left: 16px;
  font-family: var(--font-display);
  font-weight: 500;
}

.blog-card-body {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.blog-card-tag {
  align-self: flex-start;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-navy-dark);
  background-color: var(--color-primary-green);
  padding: 4px 10px;
  border-radius: 50px;
  margin-bottom: var(--space-sm);
}

.blog-card-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: var(--space-xs);
  color: var(--color-charcoal);
  line-height: 1.3;
}

.blog-card-excerpt {
  font-size: 14px;
  color: var(--color-slate);
  margin-bottom: var(--space-md);
  flex-grow: 1;
}

.blog-card-meta {
  font-size: 12px;
  color: #718096;
  border-top: 1px solid var(--color-grey-border);
  padding-top: var(--space-sm);
  display: flex;
  justify-content: space-between;
}

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

.blog-card:hover .blog-card-title {
  color: var(--color-primary-blue);
}

/* --- 17. FINAL CTA BAND --- */
.final-cta-band {
  background: linear-gradient(135deg, var(--color-primary-blue) 0%, var(--color-navy-dark) 100%);
  color: var(--color-pure-white);
  text-align: center;
  padding: var(--space-xl) 0;
}

.final-cta-title {
  font-size: 28px;
  color: var(--color-pure-white);
  margin-bottom: var(--space-xs);
}

@media (min-width: 768px) {
  .final-cta-title {
    font-size: 36px;
  }
}

.final-cta-sub {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-lg);
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

.final-cta-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-lg);
}

@media (min-width: 576px) {
  .final-cta-buttons {
    flex-direction: row;
    gap: var(--space-md);
  }
}

.final-cta-trust-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.9);
}

/* --- 18. FOOTER --- */
.main-footer {
  background-color: var(--color-navy-darker);
  color: rgba(255, 255, 255, 0.75);
  padding-top: 80px;
  padding-bottom: 20px;
  border-top: 2px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-bottom: 60px;
}

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

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.2fr 0.9fr 0.9fr 1fr;
  }
}

.footer-col h3 {
  color: var(--color-primary-green);
  font-size: 16px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-md);
}

.footer-tagline {
  font-size: 14px;
  margin-top: var(--space-sm);
  margin-bottom: var(--space-md);
}

.footer-social-links {
  display: flex;
  gap: 12px;
}

.footer-social-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-circle);
  background-color: rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--color-pure-white);
  transition: var(--transition-fast);
}

.footer-social-icon:hover {
  background-color: var(--color-primary-green);
  color: var(--color-navy-dark);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  font-weight: 500;
}

.footer-links a:hover {
  color: var(--color-primary-green);
  padding-left: 4px;
}

.footer-contact-item {
  margin-bottom: 16px;
  display: flex;
  gap: 12px;
}

.footer-contact-icon {
  color: var(--color-primary-green);
  font-size: 18px;
  flex-shrink: 0;
}

.footer-contact-text h4 {
  font-size: 12px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.4);
  text-transform: uppercase;
  margin-bottom: 2px;
}

.footer-contact-text p, .footer-contact-text a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
}

.footer-phone-highlight {
  font-size: 20px !important;
  font-weight: 700;
  color: var(--color-primary-green) !important;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
}

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

.footer-bottom-links a {
  color: rgba(255, 255, 255, 0.45);
  margin-left: 16px;
}

.footer-bottom-links a:hover {
  color: var(--color-primary-green);
}

/* --- 19. WHATSAPP FLOATING WIDGET --- */
.whatsapp-widget {
  position: fixed;
  bottom: var(--space-md);
  right: var(--space-md);
  z-index: 999;
}

.whatsapp-bubble {
  width: 56px;
  height: 56px;
  background-color: #25D366;
  border-radius: var(--radius-circle);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--color-pure-white);
  font-size: 28px;
  cursor: pointer;
  position: relative;
  transition: var(--transition-fast);
}

.whatsapp-bubble:hover {
  transform: scale(1.08);
}

.whatsapp-tooltip {
  position: absolute;
  right: 70px;
  top: 50%;
  transform: translateY(-50%) translateX(10px);
  background-color: var(--color-navy-dark);
  color: var(--color-pure-white);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-fast);
}

.whatsapp-tooltip::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -5px;
  transform: translateY(-50%) rotate(45deg);
  width: 10px;
  height: 10px;
  background-color: var(--color-navy-dark);
}

.whatsapp-widget:hover .whatsapp-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateY(-50%) translateX(0);
}

/* Pulse animation on load */
@keyframes widget-pulse {
  0% { transform: scale(1); box-shadow: 0 4px 16px rgba(0,0,0,0.2); }
  50% { transform: scale(1.06); box-shadow: 0 4px 24px rgba(37, 211, 102, 0.6); }
  100% { transform: scale(1); box-shadow: 0 4px 16px rgba(0,0,0,0.2); }
}

.whatsapp-bubble.pulse {
  animation: widget-pulse 1.8s infinite;
}

/* --- 20. ANIMATION CLASSES --- */
.fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition-slow);
}

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

.stagger-delay-1 { transition-delay: 0.1s; }
.stagger-delay-2 { transition-delay: 0.2s; }
.stagger-delay-3 { transition-delay: 0.3s; }
.stagger-delay-4 { transition-delay: 0.4s; }
.stagger-delay-5 { transition-delay: 0.5s; }
.stagger-delay-6 { transition-delay: 0.6s; }

/* Page Specific styling (About, Services, Contact) */
.page-hero {
  padding-top: 180px;
  padding-bottom: 100px;
  background: linear-gradient(135deg, var(--color-navy-dark) 0%, var(--color-primary-blue) 100%);
  color: var(--color-pure-white);
  text-align: center;
}

.page-hero-title {
  font-size: 36px;
  color: var(--color-pure-white);
  margin-bottom: var(--space-xs);
}

@media (min-width: 768px) {
  .page-hero-title {
    font-size: 48px;
  }
}

.breadcrumbs {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-top: var(--space-sm);
}

.breadcrumbs a {
  color: var(--color-primary-green);
}

/* Timeline vertical for Mobile, About story */
.about-timeline-vertical {
  position: relative;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-lg);
  border-left: 2px solid var(--color-primary-blue);
}

.timeline-vertical-item {
  position: relative;
  margin-bottom: var(--space-xl);
}

.timeline-vertical-item::after {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-lg) - 7px);
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: var(--radius-circle);
  background-color: var(--color-primary-green);
  border: 2px solid var(--color-pure-white);
}

.timeline-year {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  color: var(--color-primary-blue);
  margin-bottom: 4px;
}

.timeline-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-charcoal);
  margin-bottom: var(--space-xs);
}

/* Contact structure page */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.contact-info-list {
  background-color: var(--color-off-white);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  border: 1px solid var(--color-grey-border);
}

.map-container {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-grey-border);
}

.map-container iframe {
  width: 100%;
  height: 300px;
  display: block;
}