/* ==========================================================================
   Lamptechno - Modern Dark-Tech Design System
   ========================================================================== */

:root {
  --bg-dark: #07090e;
  --bg-card: rgba(13, 18, 30, 0.7);
  --bg-card-hover: rgba(18, 25, 42, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --border-light: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(6, 182, 212, 0.5);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --primary: #06b6d4;
  --primary-glow: rgba(6, 182, 212, 0.35);
  --secondary: #8b5cf6;
  --secondary-glow: rgba(139, 92, 246, 0.3);
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  --gradient-brand: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(6, 182, 212, 0.15), transparent 70%);
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-main);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  background: var(--bg-dark);
  background-image: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(6, 182, 212, 0.18), transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 40%, rgba(139, 92, 246, 0.1), transparent 60%),
    radial-gradient(ellipse 50% 30% at 10% 70%, rgba(59, 130, 246, 0.08), transparent 50%);
  background-attachment: fixed;
  min-height: 100vh;
}

/* Typography & Utilities */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-main);
}

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-tag.purple {
  background: rgba(139, 92, 246, 0.1);
  border-color: rgba(139, 92, 246, 0.25);
  color: var(--secondary);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem;
}

.section-header h2 {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.08rem;
}

/* Glassmorphic Card Mixin */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.18), transparent);
}

.glass-card:hover {
  border-color: rgba(6, 182, 212, 0.3);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6), 0 0 25px -5px var(--primary-glow);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.96rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
  position: relative;
  z-index: 1;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 0 20px var(--primary-glow);
}

.btn-primary:hover {
  box-shadow: 0 0 30px rgba(6, 182, 212, 0.6);
  transform: translateY(-2px);
  color: #fff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-whatsapp {
  background: #25D366;
  color: #052e16;
  font-weight: 700;
  box-shadow: 0 0 20px rgba(37, 211, 102, 0.35);
}

.btn-whatsapp:hover {
  background: #22c55e;
  box-shadow: 0 0 30px rgba(37, 211, 102, 0.6);
  transform: translateY(-2px);
  color: #052e16;
}

.btn-sm {
  padding: 0.55rem 1.15rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  transition: var(--transition);
  padding: 1.1rem 0;
}

.header.scrolled {
  background: rgba(7, 9, 14, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  padding: 0.75rem 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary);
  box-shadow: 0 0 15px var(--primary-glow);
  background: #ffffff;
}

.logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 0.3rem 0;
}

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

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.hamburger-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border-light);
  color: var(--text-main);
  padding: 0.6rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* Mobile Nav Drawer */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 85%;
  max-width: 380px;
  height: 100vh;
  background: rgba(10, 14, 24, 0.98);
  backdrop-filter: blur(25px);
  z-index: 1000;
  padding: 2.5rem 1.8rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-left: 1px solid var(--border-light);
  transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-nav.open {
  right: 0;
}

.mobile-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mobile-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.5rem;
}

.mobile-close-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-light);
  color: var(--text-main);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.mobile-nav-links a {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-muted);
}

.mobile-nav-links a:hover {
  color: var(--primary);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 9rem 0 5rem;
  position: relative;
  text-align: center;
}

.hero-badge-wrap {
  margin-bottom: 1.8rem;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 1.15rem;
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  color: #38bdf8;
  box-shadow: 0 0 25px rgba(6, 182, 212, 0.15);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #38bdf8;
  box-shadow: 0 0 10px #38bdf8;
  animation: pulseAnimation 2s infinite;
}

@keyframes pulseAnimation {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.35); opacity: 1; box-shadow: 0 0 15px #38bdf8; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-headline {
  font-size: clamp(2.4rem, 5.2vw, 4.2rem);
  letter-spacing: -0.03em;
  max-width: 980px;
  margin: 0 auto 1.5rem;
  line-height: 1.15;
}

.hero-subheadline {
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 2.5rem;
  font-weight: 400;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 4rem;
  flex-wrap: wrap;
}

.hero-metrics-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
  padding: 1.5rem 2rem;
  background: rgba(13, 18, 30, 0.5);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
}

.metric-item {
  text-align: center;
  position: relative;
}

.metric-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background: var(--border-light);
}

.metric-value {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 0.2rem;
}

.metric-label {
  font-size: 0.84rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   Why Choose LampTechno Section
   ========================================================================== */
.why-section {
  padding: 6rem 0;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.8rem;
}

.why-card {
  padding: 2.2rem;
}

.card-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.why-card:nth-child(2) .card-icon-wrap {
  background: rgba(139, 92, 246, 0.1);
  border-color: rgba(139, 92, 246, 0.25);
  color: var(--secondary);
}

.why-card:nth-child(3) .card-icon-wrap {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.25);
  color: var(--accent-green);
}

.why-card:nth-child(4) .card-icon-wrap {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.25);
  color: var(--accent-amber);
}

.why-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.85rem;
}

.why-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ==========================================================================
   Core Services & Pricing Section
   ========================================================================== */
.pricing-section {
  padding: 6rem 0;
  position: relative;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.8rem;
  align-items: stretch;
}

.pricing-card {
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--border-light);
}

.pricing-card.featured {
  border-color: rgba(6, 182, 212, 0.45);
  background: rgba(15, 23, 42, 0.85);
  box-shadow: 0 0 35px rgba(6, 182, 212, 0.15);
  transform: scale(1.02);
}

.featured-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--gradient-brand);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
}

.service-title {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}

.pricing-amount {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  margin: 1.25rem 0 1.5rem;
}

.price-prefix {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.price-val {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.03em;
}

.deliverables-box {
  margin-bottom: 2rem;
  flex-grow: 1;
}

.deliverables-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.deliverable-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  background: rgba(255, 255, 255, 0.02);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary);
}

/* ==========================================================================
   Interactive Project Cost Estimator Widget
   ========================================================================== */
.estimator-section {
  padding: 4rem 0 6rem;
}

.estimator-card {
  padding: 3rem;
  background: linear-gradient(145deg, rgba(15, 23, 42, 0.9), rgba(10, 15, 28, 0.95));
  border: 1px solid rgba(6, 182, 212, 0.25);
  box-shadow: 0 0 50px rgba(6, 182, 212, 0.1);
}

.estimator-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

.estimator-options {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.est-group-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text-main);
}

.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.chip-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.chip-btn:hover {
  border-color: var(--primary);
  color: var(--text-main);
}

.chip-btn.active {
  background: rgba(6, 182, 212, 0.15);
  border-color: var(--primary);
  color: #38bdf8;
  font-weight: 600;
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.2);
}

.est-result-box {
  background: rgba(6, 10, 18, 0.8);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 2.2rem;
  text-align: center;
}

.est-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.est-price-display {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 0.5rem;
  font-feature-settings: "tnum";
}

.est-subtext {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 1.8rem;
}

/* ==========================================================================
   Our Process Section
   ========================================================================== */
.process-section {
  padding: 6rem 0;
}

.process-timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  position: relative;
}

.process-step-card {
  padding: 2.5rem 2rem;
  position: relative;
}

.step-num {
  font-size: 3.2rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.05);
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  line-height: 1;
  font-family: monospace;
}

.step-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  background: rgba(6, 182, 212, 0.1);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.process-step-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.85rem;
}

.process-step-card p {
  color: var(--text-muted);
  font-size: 0.96rem;
  line-height: 1.65;
}

/* ==========================================================================
   Get in Touch & Inquiry Form
   ========================================================================== */
.contact-section {
  padding: 6rem 0;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 3rem;
}

.contact-info-card {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-detail-list {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
  margin: 2rem 0;
}

.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.contact-label {
  font-size: 0.82rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}

.contact-val {
  font-size: 1.05rem;
  color: var(--text-main);
  font-weight: 500;
}

.contact-val a:hover {
  color: var(--primary);
}

.form-wrapper-card {
  padding: 2.8rem;
}

.form-wrapper-card h3 {
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
}

.form-wrapper-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.form-group.full-width {
  grid-column: span 2;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.45rem;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 0.85rem 1.1rem;
  background: rgba(10, 15, 26, 0.8);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.25);
  background: rgba(13, 20, 36, 0.95);
}

.form-control::placeholder {
  color: var(--text-dim);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

select.form-control option {
  background: #0d1322;
  color: #f8fafc;
}

.honeypot-field {
  display: none !important;
  visibility: hidden !important;
}

.form-alert {
  padding: 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
  font-size: 0.92rem;
  display: none;
}

.form-alert.success {
  display: block;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #6ee7b7;
}

.form-alert.error {
  display: block;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: #fca5a5;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  border-top: 1px solid var(--border-light);
  background: rgba(4, 6, 10, 0.9);
  padding: 4rem 0 2rem;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.94rem;
  margin-top: 1rem;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 1rem;
  margin-bottom: 1.2rem;
  color: var(--text-main);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-dim);
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.admin-portal-link {
  color: var(--text-dim);
  font-size: 0.8rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.admin-portal-link:hover {
  color: var(--text-muted);
}

/* ==========================================================================
   Floating WhatsApp Widget
   ========================================================================== */
.floating-whatsapp {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 90;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.whatsapp-bubble {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #25D366;
  color: #052e16;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.45);
  transition: var(--transition);
  cursor: pointer;
}

.whatsapp-bubble:hover {
  transform: scale(1.1);
  box-shadow: 0 15px 35px rgba(37, 211, 102, 0.6);
}

.whatsapp-tooltip {
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(37, 211, 102, 0.35);
  color: #fff;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  backdrop-filter: blur(8px);
  pointer-events: none;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  animation: fadeIn 0.4s ease;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 992px) {
  .nav-menu, .nav-actions .btn {
    display: none;
  }
  .hamburger-btn {
    display: block;
  }
  .contact-layout {
    grid-template-columns: 1fr;
  }
  .estimator-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
  .form-group.full-width {
    grid-column: span 1;
  }
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }
  .hero-cta-group .btn {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .floating-whatsapp {
    bottom: 1.2rem;
    right: 1.2rem;
  }
  .whatsapp-tooltip {
    display: none;
  }
  .estimator-card, .form-wrapper-card, .contact-info-card {
    padding: 1.5rem;
  }
}