/* ==========================================================================
   PSG ENGINEERING PTE LTD - Components & Interactive UI CSS
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Interactive Solar PV ROI & Carbon Savings Calculator
   -------------------------------------------------------------------------- */
.calculator-section {
  background: linear-gradient(135deg, var(--primary-navy) 0%, var(--secondary-navy) 100%);
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
}

.calculator-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-xl);
  padding: 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
}

.calc-controls {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.calc-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.calc-label {
  font-weight: 600;
  font-size: 0.95rem;
  color: #E2E8F0;
}

.calc-val-badge {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.2rem;
  color: #00F2FE;
  background: rgba(0, 242, 254, 0.12);
  padding: 4px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0, 242, 254, 0.3);
  box-shadow: 0 0 14px rgba(0, 242, 254, 0.15);
}

/* Custom Range Slider */
.calc-range {
  -webkit-appearance: none;
  width: 100%;
  height: 8px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.15);
  outline: none;
  transition: var(--transition-fast);
}

.calc-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, #FF6B00 0%, #FFA800 100%);
  cursor: pointer;
  box-shadow: 0 0 16px rgba(255, 107, 0, 0.5);
  transition: var(--transition-fast);
}

.calc-range::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  background: linear-gradient(135deg, #FFA800 0%, #FF6B00 100%);
}

.calc-radio-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.calc-radio-btn {
  padding: 10px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #E2E8F0;
  font-size: 0.85rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.calc-radio-btn.active {
  background: linear-gradient(135deg, #00F2FE 0%, #4FACFE 100%);
  border-color: #00F2FE;
  color: #0B132B;
  font-weight: 800;
  box-shadow: 0 4px 16px rgba(0, 242, 254, 0.35);
}

/* Calculator Results Display Card */
.calc-results-card {
  background: rgba(11, 19, 43, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.calc-results-header {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: #FFFFFF;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 16px;
}

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

.result-label {
  font-size: 0.9rem;
  color: #94A3B8;
}

.result-value {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #34D399 0%, #10B981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.result-value.amber {
  background: linear-gradient(135deg, #FF6B00 0%, #FFA800 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.result-value.blue {
  background: linear-gradient(135deg, #00F2FE 0%, #4FACFE 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.result-metric-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.metric-mini-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 14px;
  text-align: center;
}

/* --------------------------------------------------------------------------
   2. Instant Service Maintenance Estimator & Quote Form
   -------------------------------------------------------------------------- */
.estimator-card {
  background: #FFFFFF;
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
}

.service-selector-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.service-checkbox-card {
  padding: 16px;
  border-radius: var(--radius-md);
  border: 2px solid var(--border-light);
  background: var(--surface-light);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: var(--transition-fast);
}

.service-checkbox-card.selected {
  border-color: var(--amber-gold);
  background: rgba(247, 157, 0, 0.05);
}

.service-checkbox-card input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--amber-gold);
}

.service-checkbox-label {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--primary-navy);
}

/* --------------------------------------------------------------------------
   3. Service Detail Dynamic Modal System
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(11, 19, 43, 0.75);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  padding: 24px;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-window {
  background: #FFFFFF;
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 760px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px rgba(0,0,0,0.3);
  position: relative;
  transform: translateY(20px) scale(0.95);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-backdrop.open .modal-window {
  transform: translateY(0) scale(1);
}

.modal-header-img {
  position: relative;
  height: 220px;
  width: 100%;
  overflow: hidden;
}

.modal-header-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--glass-dark);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: var(--transition-fast);
  z-index: 10;
}

.modal-close-btn:hover {
  background: var(--fire-red);
  transform: rotate(90deg);
}

.modal-content-body {
  padding: 32px;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 12px;
}

.modal-compliance-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.12);
  color: #059669;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.modal-checklist {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 20px 0;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.checklist-item svg {
  width: 18px;
  height: 18px;
  color: var(--solar-green);
  flex-shrink: 0;
  margin-top: 2px;
}

/* --------------------------------------------------------------------------
   4. Portfolio & Project Case Studies Showcase
   -------------------------------------------------------------------------- */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.portfolio-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  background: var(--primary-navy);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.portfolio-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.portfolio-img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  opacity: 0.88;
  transition: var(--transition-normal);
}

.portfolio-card:hover .portfolio-img {
  opacity: 0.4;
  transform: scale(1.05);
}

.portfolio-info {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 24px;
  background: linear-gradient(180deg, transparent 0%, rgba(11, 19, 43, 0.95) 100%);
  color: #FFFFFF;
}

.portfolio-category {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--amber-light);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.portfolio-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: 4px;
}

/* --------------------------------------------------------------------------
   5. Testimonials & Client Trust
   -------------------------------------------------------------------------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.testimonial-card {
  background: var(--surface-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: relative;
}

.quote-icon {
  width: 32px;
  height: 32px;
  color: var(--amber-gold);
  opacity: 0.4;
}

.testimonial-quote {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border-light);
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-navy);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.author-details {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--primary-navy);
}

.author-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   6. Contact Center & Location Map
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info-card {
  background: var(--primary-navy);
  color: #FFFFFF;
  border-radius: var(--radius-xl);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  box-shadow: var(--shadow-lg);
}

.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(247, 157, 0, 0.15);
  color: var(--amber-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon-box svg {
  width: 20px;
  height: 20px;
}

.contact-detail-title {
  font-size: 0.8rem;
  color: #94A3B8;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.contact-detail-value {
  font-size: 1rem;
  font-weight: 600;
  color: #FFFFFF;
}

.contact-detail-value a:hover {
  color: var(--amber-light);
}

.map-card-preview {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.map-card-preview iframe {
  width: 100%;
  height: 180px;
  border: 0;
  border-radius: var(--radius-md);
}

/* --------------------------------------------------------------------------
   7. Floating Quick Action Bar (WhatsApp & Call)
   -------------------------------------------------------------------------- */
.floating-actions {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 990;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.float-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  transition: var(--transition-bounce);
  position: relative;
}

.float-btn:hover {
  transform: scale(1.1);
}

.float-whatsapp {
  background: linear-gradient(135deg, #25D366 0%, #059669 100%);
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.45);
}

.float-phone {
  background: linear-gradient(135deg, #FF6B00 0%, #FFA800 100%);
  box-shadow: 0 8px 24px rgba(255, 107, 0, 0.45);
}

.float-btn svg {
  width: 26px;
  height: 26px;
}

.float-tooltip {
  position: absolute;
  right: 68px;
  background: var(--primary-navy);
  color: #FFFFFF;
  padding: 6px 14px;
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-md);
}

.float-btn:hover .float-tooltip {
  opacity: 1;
}

/* --------------------------------------------------------------------------
   8. Toast Notification System
   -------------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  top: 100px;
  right: 24px;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: var(--primary-navy);
  color: #FFFFFF;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  border-left: 4px solid var(--solar-green);
  animation: slideInRight 0.3s ease;
}

.toast.amber {
  border-left-color: var(--amber-gold);
}

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* --------------------------------------------------------------------------
   9. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--primary-navy);
  color: var(--text-on-dark-muted);
  padding: 80px 0 32px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* --------------------------------------------------------------------------
   7. Graphical Site Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: linear-gradient(180deg, #0B132B 0%, #050B18 100%);
  color: #CBD5E1;
  padding: 80px 0 36px 0;
  border-top: 1px solid rgba(0, 242, 254, 0.25);
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 70%;
  height: 1px;
  background: linear-gradient(90deg, transparent, #00F2FE, #FF7E00, transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1.1fr 1.3fr 1.3fr;
  gap: 40px;
  margin-bottom: 56px;
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: -0.01em;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
}

.footer-col-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 22px;
  position: relative;
  padding-bottom: 8px;
}

.footer-col-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 36px;
  height: 2px;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, #00F2FE, #FF7E00);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 0.9rem;
}

.footer-links li a {
  color: #CBD5E1;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.25s ease;
}

.footer-links li a::before {
  content: '›';
  font-size: 1.1rem;
  color: #00F2FE;
  transition: transform 0.25s ease, color 0.25s ease;
}

.footer-links li a:hover {
  color: #00F2FE;
  transform: translateX(4px);
}

.footer-links li a:hover::before {
  transform: translateX(2px);
  color: #FF7E00;
}

.footer-contact-pill {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  color: #E2E8F0;
  font-size: 0.85rem;
  transition: all 0.3s ease;
}

.footer-contact-pill:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 242, 254, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 242, 254, 0.15);
}

.footer-cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.25);
  border-radius: var(--radius-full);
  color: #00F2FE;
  font-size: 0.8rem;
  font-weight: 700;
  font-family: var(--font-heading);
  letter-spacing: 0.03em;
}

.footer-cert-badge.amber {
  background: rgba(255, 126, 0, 0.08);
  border-color: rgba(255, 126, 0, 0.25);
  color: #FF7E00;
}

.footer-cert-badge.green {
  background: rgba(16, 185, 129, 0.08);
  border-color: rgba(16, 185, 129, 0.25);
  color: #34D399;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
}

/* Comprehensive Mobile & Tablet Responsive Component Overrides */
@media (max-width: 1024px) {
  .calculator-card,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

@media (max-width: 768px) {
  .calculator-card {
    padding: 24px 16px;
    border-radius: var(--radius-lg);
    gap: 28px;
  }

  .calc-results-card {
    padding: 20px 14px;
    border-radius: var(--radius-md);
  }

  .calc-results-header {
    font-size: 1.05rem;
    padding-bottom: 12px;
  }

  .result-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 10px;
  }

  .result-label {
    font-size: 0.85rem;
  }

  .result-value {
    font-size: 1.25rem;
    word-break: break-word;
  }

  .result-metric-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .metric-mini-card {
    padding: 10px 8px;
  }

  .metric-mini-card div:first-child {
    font-size: 1.05rem !important;
  }

  .estimator-card {
    padding: 24px 16px;
    border-radius: var(--radius-lg);
  }

  .service-selector-grid {
    grid-template-columns: 1fr;
  }

  .contact-info-card {
    padding: 24px 16px;
  }

  .modal-window {
    max-width: 95vw;
  }

  .modal-content-body {
    padding: 20px 16px;
  }

  .modal-checklist {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .calc-radio-group {
    grid-template-columns: 1fr;
  }

  .result-metric-grid {
    grid-template-columns: 1fr;
  }

  .floating-actions {
    bottom: 16px;
    right: 16px;
    gap: 8px;
  }

  .float-btn {
    width: 48px;
    height: 48px;
  }

  .float-btn svg {
    width: 22px;
    height: 22px;
  }

  .toast {
    left: 16px;
    right: 16px;
    font-size: 0.8rem;
  }
}