/* Blue Star Service Center - Modern Lightweight Design System */
:root {
  --primary: #0b4f9c;
  --primary-dark: #07356a;
  --primary-light: #1976d2;
  --primary-soft: #eaf3fd;
  --accent: #0284c7;
  --whatsapp: #25d366;
  --whatsapp-dark: #128c7e;
  --call-blue: #0284c7;
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-light: #64748b;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --border-focus: #93c5fd;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --transition: all 0.25s ease-in-out;
  --container-max: 1200px;
}

/* Strict Box Sizing & Anti-Overflow across all viewports */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-main);
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  margin: 0;
  padding: 0;
}

body {
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
  box-sizing: border-box;
}

/* Base Elements */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

a:hover {
  color: var(--primary-dark);
}

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

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
  box-sizing: border-box;
}

/* Typography Helpers */
h1, h2, h3, h4, h5 {
  color: var(--text-main);
  line-height: 1.3;
  font-weight: 700;
  word-wrap: break-word;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary);
  background: var(--primary-soft);
  padding: 5px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 36px auto;
  width: 100%;
}

.section-header h2 {
  font-size: 2.1rem;
  margin-bottom: 12px;
  color: var(--primary-dark);
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.02rem;
  line-height: 1.55;
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 900;
  box-shadow: var(--shadow-sm);
  box-sizing: border-box;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  width: 100%;
  box-sizing: border-box;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  min-width: 0;
  flex: 0 1 auto;
}

.logo-badge {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: linear-gradient(135deg, var(--primary) 0%, #0284c7 100%);
  color: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.15rem;
  box-shadow: 0 2px 6px rgba(11, 79, 156, 0.25);
}

.logo-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.logo-text .title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1.15;
  letter-spacing: -0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.logo-text .subtitle {
  font-size: 0.72rem;
  color: var(--text-light);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--text-main);
  padding: 6px 2px;
  position: relative;
  white-space: nowrap;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.2s ease;
}

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

.header-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--primary);
  color: #ffffff !important;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  box-shadow: 0 2px 8px rgba(11, 79, 156, 0.2);
  white-space: nowrap;
}

.header-action-btn:hover {
  background: var(--primary-dark);
}

/* Mobile Hamburger Button - Strictly Pinned Inside Viewport */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 38px;
  height: 38px;
  min-width: 38px;
  padding: 7px;
  background: #f1f5f9;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  cursor: pointer;
  z-index: 915;
  box-sizing: border-box;
  flex-shrink: 0;
  margin-left: 8px;
}

.hamburger-line {
  width: 100%;
  height: 2.5px;
  background: var(--primary-dark);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger-btn.active .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger-btn.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger-btn.active .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav Drawer - Zero Horizontal Overflow Guarantee */
.mobile-nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  z-index: 920;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.mobile-nav-backdrop.show {
  display: block;
  opacity: 1;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 280px;
  max-width: 85vw;
  height: 100%;
  background: #ffffff;
  z-index: 925;
  box-shadow: -4px 0 15px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  padding: 75px 22px 25px;
  box-sizing: border-box;
  transform: translateX(100%);
  visibility: hidden;
  pointer-events: none;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.3s;
}

.mobile-drawer.open {
  transform: translateX(0);
  visibility: visible;
  pointer-events: auto;
}

.mobile-nav-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0;
  padding: 0;
}

.mobile-nav-menu .nav-link {
  font-size: 1.02rem;
  display: block;
  padding: 10px 0;
  border-bottom: 1px solid #f1f5f9;
  color: var(--text-main);
}

/* Hero Section */
.hero-section {
  padding: 45px 0 50px;
  background: linear-gradient(180deg, #f0f7ff 0%, #ffffff 100%);
  border-bottom: 1px solid var(--border);
  position: relative;
  width: 100%;
  box-sizing: border-box;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 36px;
  align-items: center;
  width: 100%;
  box-sizing: border-box;
}

.hero-content {
  width: 100%;
  min-width: 0;
}

.hero-content h1 {
  font-size: 2.5rem;
  color: var(--primary-dark);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.hero-lead-box {
  background: rgba(255, 255, 255, 0.95);
  border-left: 4px solid var(--primary);
  padding: 14px 18px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  box-sizing: border-box;
}

.hero-lead-box p {
  font-size: 1.02rem;
  color: var(--text-main);
  line-height: 1.45;
  margin-bottom: 4px;
}

.hero-lead-box p:last-child {
  margin-bottom: 0;
  font-weight: 700;
  color: var(--primary);
}

.hero-desc {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  line-height: 1.6;
}

.hero-badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 5px 12px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  white-space: nowrap;
}

.hero-badge-pill svg {
  color: var(--primary);
  flex-shrink: 0;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary);
  color: #fff !important;
  font-weight: 600;
  padding: 11px 22px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  box-shadow: 0 4px 12px rgba(11, 79, 156, 0.22);
}

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-whatsapp-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #ffffff;
  color: var(--whatsapp-dark) !important;
  font-weight: 600;
  padding: 11px 20px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--whatsapp);
  font-size: 0.95rem;
}

.btn-whatsapp-outline:hover {
  background: #f0fdf4;
}

.hero-media-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  background: #ffffff;
  width: 100%;
  box-sizing: border-box;
}

.hero-media-wrapper img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.hero-floating-card {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  padding: 10px 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-sizing: border-box;
}

.hero-card-stat {
  display: flex;
  flex-direction: column;
}

.hero-card-stat .stat-num {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--primary-dark);
}

.hero-card-stat .stat-text {
  font-size: 0.75rem;
  color: var(--text-light);
  font-weight: 600;
}

/* Sections Layout */
.section {
  padding: 60px 0;
  position: relative;
  width: 100%;
  box-sizing: border-box;
}

.section-alt {
  background-color: #ffffff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

/* Category Filter Bar */
.appliances-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 30px;
  width: 100%;
}

.filter-pill {
  padding: 7px 15px;
  border-radius: var(--radius-full);
  background: #ffffff;
  border: 1px solid var(--border);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.filter-pill:hover, .filter-pill.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

/* Appliance Cards Grid */
.appliance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  width: 100%;
  box-sizing: border-box;
}

.appliance-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  box-sizing: border-box;
  width: 100%;
}

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

.card-img-box {
  position: relative;
  height: 200px;
  background: #e2e8f0;
  overflow: hidden;
  width: 100%;
}

.card-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.card-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(11, 79, 156, 0.92);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  box-sizing: border-box;
  width: 100%;
}

.card-title {
  font-size: 1.2rem;
  margin-bottom: 8px;
  color: var(--primary-dark);
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 14px;
  line-height: 1.5;
}

.card-details-box {
  background: #f8fafc;
  border-radius: var(--radius-md);
  padding: 12px 14px;
  margin-bottom: 16px;
  border: 1px solid #f1f5f9;
  font-size: 0.84rem;
  box-sizing: border-box;
}

.card-details-box strong {
  color: var(--primary-dark);
  display: block;
  margin-bottom: 3px;
  font-size: 0.85rem;
}

.card-details-box p,
.card-details-box .detail-desc {
  color: var(--text-muted);
  margin-bottom: 7px;
  line-height: 1.4;
}

.card-details-box p:last-child,
.card-details-box .detail-desc:last-child {
  margin-bottom: 0;
}

.card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  gap: 10px;
}

.btn-card-link {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.btn-card-contact {
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--primary-soft);
  color: var(--primary);
  padding: 5px 12px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

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

/* Detail Section Block */
.detail-section-block {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  margin-bottom: 30px;
  box-shadow: var(--shadow-sm);
  width: 100%;
  box-sizing: border-box;
}

.detail-section-block:last-child {
  margin-bottom: 0;
}

.detail-heading-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 14px;
  margin-bottom: 18px;
}

.detail-heading-row h3 {
  font-size: 1.45rem;
  color: var(--primary-dark);
}

.badge-verified {
  background: #dcfce7;
  color: #166534;
  font-size: 0.76rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.detail-query-intro {
  font-style: italic;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 12px;
  font-size: 1rem;
}

.detail-grid-3col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 18px 0;
  width: 100%;
  box-sizing: border-box;
}

.detail-spec-box {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  box-sizing: border-box;
  width: 100%;
}

.detail-spec-box h4 {
  font-size: 0.95rem;
  color: var(--primary-dark);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.detail-spec-box ul {
  list-style: none;
  font-size: 0.86rem;
  color: var(--text-muted);
  margin: 0;
  padding: 0;
}

.detail-spec-box ul li {
  position: relative;
  padding-left: 15px;
  margin-bottom: 5px;
  line-height: 1.42;
}

.detail-spec-box ul li::before {
  content: '•';
  color: var(--primary);
  position: absolute;
  left: 0;
  font-weight: bold;
}

/* AC Types Breakdown Grid */
.ac-types-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
  margin-top: 22px;
  width: 100%;
  box-sizing: border-box;
}

.ac-type-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  box-sizing: border-box;
  width: 100%;
}

.ac-type-card:hover {
  border-color: var(--primary-light);
  transform: translateY(-2px);
}

.ac-type-card h4 {
  font-size: 1.1rem;
  color: var(--primary-dark);
  margin-bottom: 7px;
}

.ac-type-card p {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin-bottom: 10px;
}

.ac-type-points {
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px dashed var(--border);
  padding-top: 8px;
}

.ac-type-points div {
  margin-bottom: 4px;
}

.ac-type-points strong {
  color: var(--text-main);
}

/* Model Series Table / Grid */
.model-series-box {
  background: var(--primary-soft);
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-md);
  padding: 22px;
  margin-top: 24px;
  width: 100%;
  box-sizing: border-box;
}

.model-series-box h4 {
  color: var(--primary-dark);
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.model-series-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 12px;
  width: 100%;
  box-sizing: border-box;
}

.model-series-item {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  box-sizing: border-box;
}

.model-series-item strong {
  color: var(--primary);
  display: block;
  font-size: 0.9rem;
}

.model-series-item span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Common Problems Grid */
.problems-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
  width: 100%;
  box-sizing: border-box;
}

.problem-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-left: 4px solid var(--primary);
  box-sizing: border-box;
  width: 100%;
}

.problem-card h3 {
  font-size: 1.02rem;
  color: var(--primary-dark);
}

.problem-appliance {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent);
}

.problem-card p,
.problem-card .problem-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.42;
}

.problem-check {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-top: auto;
  padding-top: 6px;
}

/* Parts and Price Table */
.price-disclaimer-box {
  background: #fffbeb;
  border: 1px solid #fef3c7;
  border-left: 4px solid #f59e0b;
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-bottom: 22px;
  font-size: 0.9rem;
  color: #92400e;
  line-height: 1.5;
  box-sizing: border-box;
  width: 100%;
}

.price-disclaimer-box strong {
  color: #78350f;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  background: #ffffff;
  margin-bottom: 24px;
  box-sizing: border-box;
}

.price-table {
  width: 100%;
  min-width: 500px;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.price-table th {
  background: #f1f5f9;
  color: var(--primary-dark);
  font-weight: 700;
  padding: 12px 16px;
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}

.price-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-main);
  vertical-align: middle;
}

.price-table tr:last-child td {
  border-bottom: none;
}

.price-table tr:hover td {
  background-color: #f8fafc;
}

.tag-service-type {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  display: inline-block;
  white-space: nowrap;
}

.tag-visit { background: #e0f2fe; color: #0369a1; }
.tag-service { background: #fef3c7; color: #92400e; }
.tag-install { background: #f3e8ff; color: #6b21a8; }
.tag-part { background: #dcfce7; color: #166534; }

.price-amount {
  font-weight: 700;
  color: var(--primary-dark);
  white-space: nowrap;
}

.price-note-cell {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Features Grid */
.features-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  width: 100%;
  box-sizing: border-box;
}

.feature-box {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-sizing: border-box;
  width: 100%;
}

.feature-icon-circle {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.feature-box h3 {
  font-size: 1.1rem;
  color: var(--primary-dark);
}

.feature-box p,
.feature-box .feature-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Process Timeline (5 or 6 steps) */
.process-timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  position: relative;
  margin-top: 25px;
  width: 100%;
  box-sizing: border-box;
}

.process-step-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 14px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  box-sizing: border-box;
  width: 100%;
}

.step-num {
  width: 34px;
  height: 34px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  margin: 0 auto 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.92rem;
}

.process-step-card h3 {
  font-size: 0.95rem;
  margin-bottom: 6px;
  color: var(--primary-dark);
}

.process-step-card p,
.process-step-card .step-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.38;
}

/* Customer Experience Section */
.experience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  width: 100%;
  box-sizing: border-box;
}

.experience-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-sizing: border-box;
  width: 100%;
}

.exp-badge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.exp-label {
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  background: #f1f5f9;
  color: var(--text-muted);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.exp-city {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary);
}

.experience-card p {
  font-size: 0.9rem;
  color: var(--text-main);
  line-height: 1.5;
  font-style: italic;
}

.exp-appliance-tag {
  margin-top: auto;
  font-size: 0.8rem;
  color: var(--text-light);
  font-weight: 600;
  border-top: 1px solid #f1f5f9;
  padding-top: 8px;
}

/* City Navigation Section */
.city-search-box {
  max-width: 480px;
  margin: 0 auto 24px;
  position: relative;
  width: 100%;
  box-sizing: border-box;
}

.city-search-box input {
  width: 100%;
  padding: 11px 16px 11px 40px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.92rem;
  outline: none;
  background: #ffffff;
  box-sizing: border-box;
}

.city-search-box input:focus {
  border-color: var(--primary);
}

.city-search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
}

.city-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
  width: 100%;
  box-sizing: border-box;
}

.city-pill-btn {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  text-align: left;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  cursor: pointer;
  box-sizing: border-box;
  width: 100%;
}

.city-pill-btn:hover, .city-pill-btn.active {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.city-pill-btn strong {
  font-size: 0.86rem;
  color: var(--primary-dark);
}

.city-pill-btn span {
  font-size: 0.74rem;
  color: var(--text-light);
}

.city-detail-modal-box {
  margin-top: 24px;
  background: #ffffff;
  border: 1.5px solid var(--primary-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: none;
  box-sizing: border-box;
  width: 100%;
}

.city-detail-modal-box.active {
  display: block;
}

/* FAQ Accordion */
.faq-list {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  box-sizing: border-box;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  box-sizing: border-box;
  width: 100%;
}

.faq-summary {
  padding: 16px 20px;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--primary-dark);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-summary::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--primary);
  flex-shrink: 0;
}

details[open] .faq-summary::after {
  content: '−';
  color: var(--primary-dark);
}

.faq-content {
  padding: 0 20px 18px;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* Contact Box */
.contact-section-box {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: center;
  width: 100%;
  box-sizing: border-box;
}

.contact-text h2 {
  color: #ffffff;
  font-size: 1.95rem;
  margin-bottom: 12px;
}

.contact-text p {
  color: #e0f2fe;
  font-size: 0.98rem;
  line-height: 1.55;
  margin-bottom: 20px;
}

.contact-action-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.contact-btn-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #ffffff;
  color: var(--primary-dark) !important;
  font-size: 0.98rem;
  font-weight: 700;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.12);
}

.contact-btn-green {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--whatsapp);
  color: #ffffff !important;
  font-size: 0.98rem;
  font-weight: 700;
  padding: 12px 20px;
  border-radius: var(--radius-md);
}

.contact-form-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 22px;
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
  box-sizing: border-box;
  width: 100%;
}

.contact-form-card h3 {
  font-size: 1.2rem;
  color: var(--primary-dark);
  margin-bottom: 12px;
}

.form-group {
  margin-bottom: 12px;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-main);
}

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.88rem;
  outline: none;
  box-sizing: border-box;
}

.btn-form-submit {
  width: 100%;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  padding: 11px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  margin-top: 4px;
}

/* Footer */
.site-footer {
  background: #0f172a;
  color: #cbd5e1;
  padding: 50px 0 25px;
  margin-top: auto;
  font-size: 0.88rem;
  width: 100%;
  box-sizing: border-box;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 30px;
  margin-bottom: 35px;
  width: 100%;
  box-sizing: border-box;
}

.footer-brand h3 {
  color: #ffffff;
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.footer-brand p {
  color: #94a3b8;
  line-height: 1.55;
  margin-bottom: 16px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 0.95rem;
  margin-bottom: 14px;
  position: relative;
  padding-bottom: 6px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background: var(--accent);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0;
  padding: 0;
}

.footer-links a {
  color: #94a3b8;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-disclaimer-box {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 25px;
  font-size: 0.8rem;
  line-height: 1.55;
  color: #94a3b8;
  box-sizing: border-box;
  width: 100%;
}

.footer-bottom {
  text-align: center;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.8rem;
  color: #64748b;
}

/* FLOATING SIDE BUTTONS (DESKTOP & MOBILE)
   Visible immediately on load, fixed relative to viewport, never scroll away */
.side-floating-btn {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 15px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.82rem;
  color: #ffffff !important;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
}

.side-floating-btn:hover {
  transform: translateY(-50%) scale(1.05);
}

.floating-whatsapp {
  left: 12px;
  background: var(--whatsapp);
}

.floating-call {
  right: 12px;
  background: var(--call-blue);
}

/* FIXED MOBILE BOTTOM BAR
   Visible immediately on mobile, equal 50% buttons, clean & accessible */
.mobile-bottom-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: #ffffff;
  border-top: 1px solid var(--border);
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  padding: 8px 10px;
  gap: 8px;
  box-sizing: border-box;
}

.btn-mobile-call, .btn-mobile-wa {
  flex: 1 1 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 44px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  color: #ffffff !important;
  text-decoration: none;
  box-sizing: border-box;
}

.btn-mobile-call {
  background: var(--call-blue);
}

.btn-mobile-wa {
  background: var(--whatsapp);
}

/* RESPONSIVE MEDIA QUERIES (320px, 360px, 375px, 390px, 412px, 430px, 768px, 1024px) */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .hero-media-wrapper img {
    height: 300px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 25px;
  }
  .contact-section-box {
    grid-template-columns: 1fr;
    padding: 28px;
  }
  .detail-grid-3col {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  /* Sufficient body bottom padding so content is never covered by bottom mobile bar */
  body {
    padding-bottom: 74px;
  }

  .nav-menu, .header-action-btn {
    display: none;
  }

  .hamburger-btn {
    display: flex;
  }

  .mobile-bottom-bar {
    display: flex;
  }

  /* Compact side floating buttons on mobile so they don't block content */
  .side-floating-btn {
    padding: 7px 10px;
    font-size: 0.72rem;
    gap: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.22);
  }
  .floating-whatsapp {
    left: 6px;
  }
  .floating-call {
    right: 6px;
  }

  .hero-content h1 {
    font-size: 2rem;
  }
  .section-header h2 {
    font-size: 1.65rem;
  }

  /* Guarantee single column grids to prevent any horizontal expansion */
  .appliance-grid,
  .features-grid-3,
  .experience-grid,
  .ac-types-grid,
  .model-series-grid,
  .problems-grid,
  .detail-grid-3col,
  .process-timeline,
  .footer-grid {
    grid-template-columns: 1fr !important;
    gap: 16px;
  }

  .city-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)) !important;
    gap: 8px;
  }

  .detail-section-block {
    padding: 20px 16px;
  }
}

@media (max-width: 480px) {
  .container {
    padding-left: 14px;
    padding-right: 14px;
  }

  .header-container {
    height: 64px;
  }

  .logo-badge {
    width: 36px;
    height: 36px;
    min-width: 36px;
    font-size: 1rem;
  }

  .logo-text .title {
    font-size: 1.02rem;
  }

  .logo-text .subtitle {
    display: none; /* Hide subtitle on small phones so title and hamburger fit perfectly */
  }

  .hero-content h1 {
    font-size: 1.75rem;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }

  .hero-cta-group {
    flex-direction: column;
  }

  .btn-primary, .btn-whatsapp-outline {
    width: 100%;
    justify-content: center;
  }

  .hero-floating-card {
    position: static;
    margin-top: 10px;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  }

  .hero-media-wrapper img {
    height: 240px;
  }

  .contact-section-box {
    padding: 20px 14px;
  }
}

@media (max-width: 360px) {
  .container {
    padding-left: 10px;
    padding-right: 10px;
  }

  .logo-text .title {
    font-size: 0.92rem;
  }

  .city-grid {
    grid-template-columns: 1fr !important;
  }
}

/* 4-Quadrant Locality Grid & Card Styles */
.locality-quadrant-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  width: 100%;
  box-sizing: border-box;
}

.locality-quadrant-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}

.locality-quadrant-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
  margin-bottom: 14px;
}

.locality-quadrant-header h3 {
  font-size: 1.12rem;
  color: var(--primary-dark);
  margin: 0;
}

.locality-count-badge {
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--primary-soft);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.locality-direction-block {
  margin-bottom: 36px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  box-sizing: border-box;
}

.locality-direction-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
  margin-bottom: 12px;
}

.locality-direction-header h3 {
  font-size: 1.22rem;
  color: var(--primary-dark);
  margin: 0;
}

.locality-direction-intro {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 16px;
}

/* Locality Cards Grid: 4-col Desktop, 2-col Tablet, 1-col Mobile */
.locality-cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  width: 100%;
  box-sizing: border-box;
}

@media (max-width: 1024px) {
  .locality-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .locality-cards-grid {
    grid-template-columns: 1fr;
  }
}

.locality-service-card {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 12px 14px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  transition: all var(--transition);
  text-decoration: none;
  color: inherit;
  box-sizing: border-box;
}

.locality-service-card:hover {
  background: #ffffff;
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.locality-card-icon {
  font-size: 1.05rem;
  color: var(--primary);
  flex-shrink: 0;
  line-height: 1;
  margin-top: 2px;
}

.locality-card-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  width: 100%;
}

.locality-card-name {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--primary-dark);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.locality-card-service {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.35;
}

/* Search Intent Styling inside Appliance Cards */
.card-search-intent {
  background: #eff6ff;
  border-left: 3px solid var(--primary);
  padding: 10px 14px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 14px;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--text-main);
}

.card-search-intent strong {
  color: var(--primary-dark);
}