html {
  scroll-behavior: smooth;
}

:root {
      --accent-color: #C8973A;
      --accent-dark: #855708;
      --accent-bright: #F5C86C;
      --accent2-color: #2D633D;
      --accent3-color: #F5F0E8;
      --accent4-color: #7A5B32;
      --primary-color: #2C4A6E;
      --dark-text-color: #1A1A2E;
      --gray-text-color: #4B5563;
      --button-padding-x: 32px;
      --button-padding-y: 14px;
      --font-family-body: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
      --light-text-color: #FFFFFF;
      --dark-border-color: #2C4A6E;
      --light-border-color: #D1DBE5;
      --font-family-heading: 'Outfit', system-ui, -apple-system, sans-serif;
      --button-rounded-radius: 8px;
      --dark-background-color: #1A1A2E;
      --light-background-color: #EFF4F8;
      --medium-background-color: #E3EBF2;
      --primary-button-text-color: #FFFFFF;
      --secondary-button-bg-color: #C8973A;
      --secondary-button-text-color: #1A1A2E;
      --primary-button-hover-bg-color: #1F3450;
      --primary-button-hover-text-color: #C8973A;
      --secondary-button-hover-bg-color: #A67C2F;
      --secondary-button-hover-text-color: #FFFFFF;
    }

    .hovered-element {
      outline: #3871E0 dashed 2px;
    }

    .clicked-element {
      outline: #3871E0 solid 2px;
    }

    .clicked-code-section {
      border: #3B82F6 solid 2px;
    }

    /* Modern Animations */
    @keyframes fadeIn {
      from { opacity: 0; }
      to { opacity: 1; }
    }

    @keyframes slideUp {
      from { 
        opacity: 0;
        transform: translateY(30px);
      }
      to { 
        opacity: 1;
        transform: translateY(0);
      }
    }

    .animate-fadeIn {
      animation: fadeIn 0.8s ease-out forwards;
    }

    .animate-slideUp {
      animation: slideUp 0.8s ease-out forwards;
    }

    .scroll-reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: all 0.8s ease-out;
    }

    .scroll-reveal.active {
      opacity: 1;
      transform: translateY(0);
    }

    /* ==========================================================================
       STS PREMIUM EXPERIENCE SYSTEM
       ========================================================================== */

    :root {
      --gold-gradient: linear-gradient(135deg, #F5C86C 0%, #C8973A 60%, #9B6D1E 100%);
      --gold-metallic: linear-gradient(135deg, #FFF5D6 0%, #F5C86C 40%, #C8973A 80%, #9B6D1E 100%);
      --gold-glow: 0 0 25px rgba(200, 151, 58, 0.35);
      --dark-luxury-bg: #0C1019;
      --dark-luxury-card: #151B28;
    }

    /* --- PREMIUM ROUTE CARDS --- */
    .premium-card {
      position: relative;
      background: linear-gradient(180deg, #171E2D 0%, #101522 100%);
      border: 1px solid rgba(200, 151, 58, 0.3);
      border-radius: 1.25rem;
      overflow: hidden;
      box-shadow: 0 14px 35px -10px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(200, 151, 58, 0.12);
      transition: all 0.45s cubic-bezier(0.16, 1, 0.3, 1);
      display: flex;
      flex-direction: column;
    }

    .premium-card:hover {
      transform: translateY(-8px);
      border-color: rgba(245, 200, 108, 0.65);
      box-shadow: 0 22px 50px -10px rgba(0, 0, 0, 0.7), 0 0 30px rgba(200, 151, 58, 0.25), 0 0 0 1px rgba(245, 200, 108, 0.3);
    }

    /* Shimmer light reflection effect on card hover */
    .premium-card-shine {
      position: absolute;
      inset: 0;
      pointer-events: none;
      z-index: 6;
      background: linear-gradient(115deg, transparent 35%, rgba(255, 255, 255, 0.08) 50%, transparent 65%);
      transform: translateX(-120%);
      transition: transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .premium-card:hover .premium-card-shine {
      transform: translateX(120%);
    }

    .premium-card-img-wrap {
      position: relative;
      overflow: hidden;
      height: 16rem;
    }

    .premium-card-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .premium-card:hover .premium-card-img-wrap img {
      transform: scale(1.08);
    }

    .premium-card-img-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, #171E2D 0%, rgba(23, 30, 45, 0.5) 40%, rgba(0, 0, 0, 0.25) 100%);
      pointer-events: none;
    }

    .premium-badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      padding: 0.38rem 0.85rem;
      border-radius: 9999px;
      background: var(--gold-metallic);
      color: #0E131C;
      font-size: 0.72rem;
      font-weight: 800;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      box-shadow: 0 4px 14px rgba(200, 151, 58, 0.45), inset 0 1px 1px rgba(255, 255, 255, 0.6);
    }

    .premium-card-body {
      padding: 1.5rem 1.65rem 1.65rem;
      color: #E2E8F0;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .premium-card-title {
      color: #FFFFFF;
      font-size: 1.3rem;
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 0.5rem;
      transition: color 0.3s ease;
    }

    .premium-card:hover .premium-card-title {
      color: #F5C86C;
    }

    .premium-card-desc {
      color: #94A3B8;
      font-size: 0.875rem;
      line-height: 1.55;
      margin-bottom: 1rem;
    }

    .premium-card-meta {
      color: #CBD5E1;
      font-size: 0.8rem;
    }

    .premium-card-icon {
      color: #F5C86C;
    }

    .premium-card-tag {
      display: inline-block;
      padding: 0.28rem 0.75rem;
      border-radius: 9999px;
      background: rgba(200, 151, 58, 0.12);
      border: 1px solid rgba(200, 151, 58, 0.28);
      color: #F5C86C;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.02em;
    }

    /* Included services box on card */
    .premium-card-includes {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(200, 151, 58, 0.2);
      border-radius: 0.75rem;
      padding: 0.75rem 0.95rem;
      margin-bottom: 1.25rem;
      display: flex;
      flex-direction: column;
      gap: 0.45rem;
    }

    .premium-card-includes-row {
      font-size: 0.78rem;
      color: #E2E8F0;
      display: flex;
      align-items: center;
      gap: 0.55rem;
    }

    .premium-card-includes-row i {
      color: #F5C86C;
      font-size: 0.82rem;
      width: 1.1rem;
      text-align: center;
    }

    /* Footer & CTA */
    .premium-card-footer {
      border-top: 1px solid rgba(200, 151, 58, 0.2);
      margin-top: auto;
      padding-top: 1.1rem;
    }

    .premium-card-from {
      color: #94A3B8;
      font-size: 0.7rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.06em;
      display: block;
      margin-bottom: 0.1rem;
    }

    .premium-card-price {
      font-size: 1.35rem;
      font-weight: 800;
      background: linear-gradient(135deg, #FFF7E2 0%, #F5C86C 50%, #C8973A 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      line-height: 1.15;
    }

    .premium-card-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      padding: 0.65rem 1.35rem;
      border-radius: 0.65rem;
      background: var(--gold-metallic);
      color: #0E131C;
      font-size: 0.875rem;
      font-weight: 700;
      text-decoration: none;
      box-shadow: 0 4px 14px rgba(200, 151, 58, 0.35);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .premium-card-cta:hover {
      background: linear-gradient(135deg, #FFFFFF 0%, #F5C86C 60%, #C8973A 100%);
      box-shadow: 0 6px 20px rgba(200, 151, 58, 0.55);
      transform: translateY(-2px);
      color: #000;
    }

    /* --- PREMIUM THEME WRAPPER (rutas.html in Premium mode) --- */
    #routes-list-wrapper.premium-theme {
      background-color: #0B0E17;
      color: #E2E8F0;
    }

    /* Top experience bar in premium mode */
    #routes-list-wrapper.premium-theme > div:first-child {
      background-color: #080B12 !important;
      border-color: rgba(200, 151, 58, 0.25) !important;
    }

    #routes-list-wrapper.premium-theme [data-exp-label] {
      color: #F5C86C !important;
      font-weight: 800;
    }

    #routes-list-wrapper.premium-theme button[onclick="stsResetExperience()"] {
      background: rgba(200, 151, 58, 0.12) !important;
      color: #F5C86C !important;
      border: 1px solid rgba(200, 151, 58, 0.3) !important;
    }

    #routes-list-wrapper.premium-theme button[onclick="stsResetExperience()"]:hover {
      background: rgba(200, 151, 58, 0.24) !important;
      color: #FFFFFF !important;
      box-shadow: 0 4px 12px rgba(200, 151, 58, 0.25);
    }

    /* Filter section in premium mode */
    #routes-list-wrapper.premium-theme > section:nth-of-type(1) {
      background-color: #0E1320 !important;
      border-color: rgba(200, 151, 58, 0.18) !important;
    }

    #routes-list-wrapper.premium-theme .filter-btn:not(.active) {
      background-color: rgba(255, 255, 255, 0.05) !important;
      color: #94A3B8 !important;
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    #routes-list-wrapper.premium-theme .filter-btn:not(.active):hover {
      background-color: rgba(200, 151, 58, 0.15) !important;
      color: #F5C86C !important;
      border-color: rgba(200, 151, 58, 0.35);
    }

    #routes-list-wrapper.premium-theme .filter-btn.active[data-filter="all"] {
      background: var(--gold-metallic) !important;
      color: #0E131C !important;
      border: 1px solid #F5C86C !important;
      box-shadow: 0 4px 14px rgba(200, 151, 58, 0.4) !important;
    }

    /* Grid container section in premium mode */
    #routes-list-wrapper.premium-theme > section:nth-of-type(2) {
      background: radial-gradient(circle at 50% 0%, #171E2D 0%, #0A0D15 100%) !important;
      min-height: 60vh;
    }

    #routes-list-wrapper.premium-theme #routes-counter {
      color: #94A3B8 !important;
    }

    /* Banner for Premium Collection above grid */
    .premium-collection-ribbon {
      margin-bottom: 2.5rem;
      padding: 1.5rem 2rem;
      border-radius: 1rem;
      background: linear-gradient(135deg, rgba(200, 151, 58, 0.12) 0%, rgba(200, 151, 58, 0.04) 100%);
      border: 1px solid rgba(200, 151, 58, 0.28);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
    }

    .premium-collection-ribbon .badge-tag {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      color: #F5C86C;
      font-size: 0.75rem;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 0.1em;
    }

    .premium-collection-ribbon h2 {
      font-family: var(--font-family-heading);
      font-size: clamp(1.4rem, 3vw, 1.85rem);
      font-weight: 700;
      color: #FFFFFF;
      margin: 0;
    }

    .premium-collection-ribbon p {
      color: #A0ABC0;
      font-size: 0.95rem;
      line-height: 1.5;
      margin: 0;
      max-width: 52rem;
    }

    /* --- PREMIUM ROUTE DETAIL PAGE (ruta.html?exp=premium) --- */
    body.premium-detail-theme {
      background-color: #FAFAFA;
    }

    .premium-hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      padding: 0.45rem 1.15rem;
      border-radius: 9999px;
      background: var(--gold-metallic);
      color: #0E131C;
      font-size: 0.82rem;
      font-weight: 800;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      box-shadow: 0 4px 15px rgba(200, 151, 58, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.6);
    }

    .premium-detail-includes {
      margin: 1.5rem 0;
      padding: 1.25rem;
      border-radius: 0.85rem;
      background: rgba(200, 151, 58, 0.08);
      border: 1px solid rgba(200, 151, 58, 0.28);
    }

    .premium-detail-includes h4 {
      color: #F5C86C;
      font-size: 0.82rem;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 0.06em;
      margin-bottom: 0.85rem;
      display: flex;
      align-items: center;
      gap: 0.55rem;
    }

    .premium-detail-includes ul {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
    }

    .premium-detail-includes li {
      font-size: 0.85rem;
      color: #F5F0E8;
      display: flex;
      align-items: center;
      gap: 0.65rem;
    }

    .premium-detail-includes li i {
      color: #F5C86C;
      font-size: 0.85rem;
      width: 1.15rem;
      text-align: center;
    }

    /* Luxury enhancements for stages in detail page */
    body.premium-detail-theme #etapas .group:hover {
      border-color: rgba(200, 151, 58, 0.45) !important;
      box-shadow: 0 12px 30px rgba(200, 151, 58, 0.12) !important;
    }