:root {
  --rl-concrete: #E9ECEF;
  --rl-concrete-light: #F8F9FA;
  --rl-steel-blue: #203A43;
  --rl-steel-dark: #0F2027;
  --rl-steel-accent: #2C5364;
  --rl-cyan-glow: #00adb5;
  --rl-cyan-subtle: rgba(0, 173, 181, 0.12);
  --rl-text-main: #1C252C;
  --rl-text-muted: #5C677D;
  --rl-border-eng: 1px solid #CED4DA;
  --rl-border-eng-dark: 1px solid rgba(255, 255, 255, 0.12);
  --rl-card-bg: #FFFFFF;
  --rl-card-bg-glass: rgba(255, 255, 255, 0.95);
  --rl-shadow-subtle: 0 4px 20px rgba(15, 32, 39, 0.05);
  --rl-shadow-hover: 0 12px 30px rgba(15, 32, 39, 0.12);
  --rl-radius: 4px;
  --rl-font-heading: 'Outfit', sans-serif;
  --rl-font-body: 'Work Sans', sans-serif;
  --transition-fast: 0.22s ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--rl-font-body);
  color: var(--rl-text-main);
  background-color: var(--rl-concrete-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--rl-font-heading);
  font-weight: 600;
  color: var(--rl-steel-dark);
  letter-spacing: -0.02em;
}

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

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

.rl-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Engineering Topbar */
.rl-topbar_8a {
  background: var(--rl-steel-dark);
  color: #ADB5BD;
  font-size: 0.82rem;
  border-bottom: var(--rl-border-eng-dark);
  padding: 8px 0;
}
.rl-topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.rl-topbar-left, .rl-topbar-right {
  display: flex;
  align-items: center;
  gap: 18px;
}
.rl-badge-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 173, 181, 0.15);
  color: #38ef7d;
  padding: 2px 8px;
  border-radius: 2px;
  font-family: monospace;
  font-size: 0.75rem;
}
.rl-pulse-dot {
  width: 7px;
  height: 7px;
  background-color: #38ef7d;
  border-radius: 50%;
  box-shadow: 0 0 8px #38ef7d;
  animation: pulseLive 2s infinite;
}
@keyframes pulseLive {
  0% { opacity: 0.4; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.15); }
  100% { opacity: 0.4; transform: scale(0.9); }
}

/* Header & Navigation */
.rl-header_9f {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: var(--rl-border-eng);
  box-shadow: 0 2px 12px rgba(0,0,0,0.03);
}
.rl-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.rl-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.rl-brand-logo svg {
  display: block;
}
.rl-brand-name {
  font-family: var(--rl-font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--rl-steel-blue);
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.rl-brand-sub {
  font-size: 0.7rem;
  color: var(--rl-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: block;
}

.rl-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}
.rl-nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--rl-steel-blue);
  padding: 6px 0;
  position: relative;
}
.rl-nav-link:hover, .rl-nav-link.active {
  color: var(--rl-cyan-glow);
}
.rl-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--rl-steel-blue);
  transition: width 0.2s ease;
}
.rl-nav-link:hover::after, .rl-nav-link.active::after {
  width: 100%;
}

.rl-header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.rl-lang-btn {
  background: var(--rl-concrete);
  border: 1px solid #ced4da;
  padding: 5px 10px;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 2px;
  cursor: pointer;
  transition: var(--transition-fast);
  color: var(--rl-steel-blue);
}
.rl-lang-btn.active {
  background: var(--rl-steel-blue);
  color: #fff;
  border-color: var(--rl-steel-blue);
}
.rl-cart-icon-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #f1f3f5;
  border: 1px solid #ced4da;
  padding: 7px 12px;
  border-radius: 3px;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--rl-steel-blue);
  position: relative;
}
.rl-cart-icon-btn:hover {
  border-color: var(--rl-steel-blue);
  background: #e9ecef;
}
.rl-cart-count {
  background: var(--rl-steel-blue);
  color: #fff;
  font-size: 0.72rem;
  padding: 1px 6px;
  border-radius: 10px;
  font-weight: 700;
}
.rl-menu-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px;
}

/* Buttons */
.rl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--rl-font-heading);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 12px 22px;
  border-radius: 3px;
  cursor: pointer;
  transition: var(--transition-fast);
  border: 1px solid transparent;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.rl-btn-primary {
  background: var(--rl-steel-blue);
  color: #fff;
  border-color: var(--rl-steel-blue);
}
.rl-btn-primary:hover {
  background: var(--rl-steel-accent);
  border-color: var(--rl-steel-accent);
  box-shadow: 0 4px 14px rgba(32, 58, 67, 0.25);
}
.rl-btn-outline {
  background: transparent;
  color: var(--rl-steel-blue);
  border-color: var(--rl-steel-blue);
}
.rl-btn-outline:hover {
  background: var(--rl-steel-blue);
  color: #fff;
}
.rl-btn-sm {
  padding: 7px 14px;
  font-size: 0.8rem;
}

/* Engineering Frame & Cards */
.rl-card {
  background: var(--rl-card-bg);
  border: var(--rl-border-eng);
  border-radius: var(--rl-radius);
  padding: 28px;
  box-shadow: var(--rl-shadow-subtle);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  position: relative;
}
.rl-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--rl-shadow-hover);
  border-color: var(--rl-steel-accent);
}
.rl-card-header-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-family: monospace;
  text-transform: uppercase;
  padding: 3px 8px;
  background: var(--rl-concrete);
  color: var(--rl-steel-blue);
  border-left: 2px solid var(--rl-steel-blue);
  margin-bottom: 14px;
}

/* Vienna Air Quality Live-Widget */
.rl-wien-widget {
  background: #FFFFFF;
  border: 1px solid #CED4DA;
  border-top: 3px solid var(--rl-steel-blue);
  box-shadow: var(--rl-shadow-subtle);
  padding: 24px;
  margin: 32px 0;
  border-radius: var(--rl-radius);
}
.rl-widget-title-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  border-bottom: 1px solid #DEE2E6;
  padding-bottom: 12px;
  margin-bottom: 20px;
}
.rl-wien-districts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}
.rl-district-pill {
  border: 1px solid #E9ECEF;
  background: #F8F9FA;
  padding: 12px;
  border-radius: 3px;
  cursor: pointer;
  transition: var(--transition-fast);
}
.rl-district-pill:hover, .rl-district-pill.active {
  background: #FFF;
  border-color: var(--rl-steel-blue);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.rl-district-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 4px;
}
.rl-pm-value {
  font-family: monospace;
  font-weight: 700;
  font-size: 0.95rem;
}
.pm-good { color: #2b9348; }
.pm-moderate { color: #e85d04; }
.pm-elevated { color: #d00000; }

.rl-district-analysis-box {
  background: #F1F3F5;
  border: 1px solid #DEE2E6;
  border-left: 4px solid var(--rl-steel-blue);
  padding: 18px 22px;
  border-radius: 2px;
}

/* Carousel / Hero Slider */
.rl-slider-wrap {
  position: relative;
  overflow: hidden;
  background: var(--rl-steel-dark);
  color: #fff;
}
.rl-slides-container {
  display: flex;
  transition: transform 0.6s cubic-bezier(0.2, 1, 0.3, 1);
}
.rl-slide {
  min-width: 100%;
  position: relative;
  padding: 90px 0 100px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
}
.rl-slide-1 {
  background: linear-gradient(135deg, rgba(15, 32, 39, 0.94), rgba(32, 58, 67, 0.88)), url('../img/blog/article-1-a.jpg') center/cover;
}
.rl-slide-2 {
  background: linear-gradient(135deg, rgba(15, 32, 39, 0.95), rgba(44, 83, 100, 0.88)), url('../img/blog/article-2-a.jpg') center/cover;
}
.rl-slide-3 {
  background: linear-gradient(135deg, rgba(15, 32, 39, 0.94), rgba(28, 40, 51, 0.9)), url('../img/blog/article-3-a.jpg') center/cover;
}
.rl-slide-content {
  max-width: 760px;
}
.rl-slide-tag {
  display: inline-block;
  background: rgba(0, 173, 181, 0.2);
  color: #00adb5;
  border: 1px solid rgba(0, 173, 181, 0.4);
  padding: 4px 10px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 18px;
  font-family: monospace;
}
.rl-slide-title {
  color: #FFFFFF;
  font-size: 2.8rem;
  line-height: 1.15;
  margin-bottom: 20px;
  font-weight: 700;
}
.rl-slide-desc {
  color: #D1D5DB;
  font-size: 1.1rem;
  margin-bottom: 30px;
  max-width: 650px;
}
.rl-slider-nav {
  position: absolute;
  bottom: 24px;
  right: 24px;
  display: flex;
  gap: 10px;
  z-index: 10;
}
.rl-slider-arrow {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}
.rl-slider-arrow:hover {
  background: var(--rl-steel-blue);
  border-color: #fff;
}

/* Service Grids */
.rl-services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
  margin: 40px 0;
}
.rl-service-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.rl-service-price {
  font-size: 1.6rem;
  font-family: var(--rl-font-heading);
  font-weight: 700;
  color: var(--rl-steel-blue);
  margin: 18px 0;
}
.rl-service-meta {
  border-top: 1px solid #E9ECEF;
  padding-top: 16px;
  margin-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Assessment Tool */
.rl-calculator-box {
  background: #FFFFFF;
  border: var(--rl-border-eng);
  padding: 36px;
  border-radius: var(--rl-radius);
  box-shadow: var(--rl-shadow-subtle);
  max-width: 820px;
  margin: 0 auto;
}
.rl-calc-step {
  margin-bottom: 26px;
  padding-bottom: 22px;
  border-bottom: 1px solid #E9ECEF;
}
.rl-calc-label {
  display: block;
  font-weight: 600;
  color: var(--rl-steel-dark);
  margin-bottom: 10px;
}
.rl-calc-radio-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.rl-calc-radio-opt {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #F8F9FA;
  border: 1px solid #CED4DA;
  padding: 12px 16px;
  border-radius: 3px;
  cursor: pointer;
  transition: var(--transition-fast);
}
.rl-calc-radio-opt:hover {
  border-color: var(--rl-steel-blue);
  background: #FFF;
}
.rl-calc-result {
  display: none;
  background: #F1F3F5;
  border: 1px solid #CED4DA;
  border-left: 5px solid var(--rl-steel-blue);
  padding: 24px;
  margin-top: 28px;
}

/* Reviews Block */
.rl-reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 30px;
}
.rl-review-card {
  background: #FFF;
  border: var(--rl-border-eng);
  padding: 24px;
  border-radius: var(--rl-radius);
}
.rl-review-stars {
  color: #f39c12;
  margin-bottom: 10px;
  font-size: 0.95rem;
}
.rl-review-text {
  font-size: 0.92rem;
  color: var(--rl-text-main);
  margin-bottom: 14px;
  font-style: italic;
}
.rl-review-author {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--rl-steel-blue);
}

/* Modal */
.rl-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 32, 39, 0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 20px;
}
.rl-modal-window {
  background: #FFFFFF;
  border: 1px solid #CED4DA;
  border-top: 4px solid var(--rl-steel-blue);
  max-width: 520px;
  width: 100%;
  padding: 32px;
  border-radius: 4px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.25);
  position: relative;
}
.rl-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: transparent;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--rl-text-muted);
}

/* Form Styles */
.rl-form-group {
  margin-bottom: 18px;
}
.rl-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--rl-steel-dark);
}
.rl-input, .rl-textarea, .rl-select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #CED4DA;
  border-radius: 3px;
  font-family: inherit;
  font-size: 0.92rem;
  background: #FFF;
  transition: var(--transition-fast);
}
.rl-input:focus, .rl-textarea:focus {
  outline: none;
  border-color: var(--rl-steel-blue);
  box-shadow: 0 0 0 2px rgba(32, 58, 67, 0.15);
}

/* Table */
.rl-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}
.rl-table th, .rl-table td {
  border: 1px solid #DEE2E6;
  padding: 14px 16px;
  text-align: left;
  font-size: 0.92rem;
}
.rl-table th {
  background: #E9ECEF;
  font-family: var(--rl-font-heading);
  font-weight: 600;
  color: var(--rl-steel-blue);
}

/* Cookie Banner */
.rl-cookie-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: #0F2027;
  color: #ADB5BD;
  padding: 18px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: none;
  z-index: 9998;
  font-size: 0.85rem;
}
.rl-cookie-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

/* Footer */
.rl-footer {
  background: #0F2027;
  color: #ADB5BD;
  padding: 60px 0 20px;
  border-top: 3px solid var(--rl-steel-blue);
  font-size: 0.9rem;
  margin-top: 80px;
}
.rl-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.rl-footer-title {
  color: #FFFFFF;
  font-size: 1.1rem;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.rl-footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.rl-footer-links a:hover {
  color: #FFFFFF;
  padding-left: 4px;
}
.rl-footer-disclaimer-box {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px;
  border-radius: 3px;
  font-size: 0.8rem;
  line-height: 1.6;
  margin-bottom: 30px;
}
.rl-footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 20px;
  text-align: center;
  font-size: 0.8rem;
  color: #6C757D;
}

/* Responsive */
@media (max-width: 992px) {
  .rl-footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .rl-slide-title {
    font-size: 2.2rem;
  }
}
@media (max-width: 768px) {
  .rl-nav {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: #FFF;
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid #CED4DA;
    box-shadow: 0 10px 20px rgba(0,0,0,0.08);
  }
  .rl-nav.active {
    display: flex;
  }
  .rl-menu-toggle {
    display: block;
  }
  .rl-topbar-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .rl-slide-title {
    font-size: 1.8rem;
  }
}