:root {
      --primary-color: #d32f2f;
      --secondary-color: #303f9f;
      --light-bg: #f9f9f9;
      --text-color: #333;
      --white: #ffffff;
      --shadow: 0 4px 15px rgba(0,0,0,0.1);
      --shadow-hover: 0 8px 25px rgba(0,0,0,0.15);
    }
    * { box-sizing: border-box; }

    html, body {
      margin: 0;
      padding: 0;
      font-family: 'Aboreto', cursive;
      background: var(--light-bg);
      color: var(--text-color);
      scroll-behavior: smooth;
    }

    nav {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 1em 2em;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: 0 2px 10px rgba(0,0,0,0.1);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    nav .logo {
      font-size: 1.8rem;
      font-weight: bold;
      color: var(--primary-color);
      transition: all 0.3s ease;
      cursor: pointer;
    }
    nav .logo:hover {
      transform: scale(1.05);
      text-shadow: 0 2px 8px rgba(211, 47, 47, 0.3);
    }
    nav a {
      text-decoration: none;
      color: var(--text-color);
      margin-left: 1.2em;
      font-weight: 500;
      position: relative;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      padding: 0.5em 0;
    }
    nav a:hover {
      color: var(--primary-color);
      transform: translateY(-2px);
    }
    nav a::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 2px;
      background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
      transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    nav a:hover::after {
      width: 100%;
    }

    section {
      width: 100%;
      min-height: 100vh;
      padding: 0;
      display: flex;
      flex-direction: column;
      justify-content: center;
      position: relative;
      opacity: 0;
      animation: fadeInUp 0.8s ease forwards;
      align-items: center;
    }
    /* Loading animation (for fadeIn effect) */
    .loading { opacity: 0; animation: fadeInUp 0.6s ease forwards; }
    section:nth-child(1) { animation-delay: 0s; }
    section:nth-child(2) { animation-delay: 0.1s; }
    section:nth-child(3) { animation-delay: 0.2s; }
    section:nth-child(4) { animation-delay: 0.3s; }
    section:nth-child(5) { animation-delay: 0.4s; }

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

    /* HERO */
    #home {
      min-height: 100vh;
      padding: 1em 2em 2em 2em;
      justify-content: center;
      align-items: center;
    }
    .slider-container {
      position: relative;
      height: 50vh;
      width: 80vw;
      max-width: 900px;
      min-width: 275px;
      overflow: hidden;
      border-radius: 20px;
      box-shadow: var(--shadow-hover);
      transition: all 0.3s ease;
    }
    .slider-container:hover {
      box-shadow: 0 12px 35px rgba(0,0,0,0.2);
      transform: translateY(-5px);
    }
    .slide {
      position: absolute;
      width: 100%;
      height: 100%;
      opacity: 0;
      transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
      transform: scale(1.05);
    }
    .slide.active {
      opacity: 1;
      z-index: 1;
      transform: scale(1);
    }
    .slide img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      border-radius: 20px;
      transition: all 0.3s ease;
    }
    .slide:hover img {
      transform: scale(1.02);
    }
    .arrow {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      background: rgba(255, 255, 255, 0.9);
      backdrop-filter: blur(10px);
      border: none;
      width: 50px;
      height: 50px;
      border-radius: 50%;
      font-size: 1.2em;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 10;
      color: var(--primary-color);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    }
    .arrow:hover {
      background: var(--white);
      transform: translateY(-50%) scale(1.1);
      box-shadow: 0 6px 20px rgba(0,0,0,0.15);
      color: var(--secondary-color);
    }
    .arrow.left { left: 1em; }
    .arrow.right { right: 1em; }
    .dots {
      position: absolute;
      bottom: 1em;
      width: 100%;
      text-align: center;
      display: flex;
      justify-content: center;
      gap: 0.5em;
    }
    .dots span {
      width: 12px;
      height: 12px;
      background: rgba(255,255,255,0.6);
      border-radius: 50%;
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      border: 2px solid transparent;
    }
    .dots span:hover {
      background: rgba(255,255,255,0.8);
      transform: scale(1.1);
    }
    .dots span.active {
      background: var(--white);
      border: 2px solid var(--primary-color);
      transform: scale(1.2);
      box-shadow: 0 0 10px rgba(211, 47, 47, 0.5);
    }
    .ribbon {
      position: absolute;
      top: 32px;
      right: 10vw;
      background: linear-gradient(135deg, var(--primary-color) 0%, #b71c1c 50%, var(--primary-color) 100%);
      color: white;
      padding: 15px 25px 15px 35px;
      font-weight: bold;
      text-align: center;
      line-height: 1.3;
      font-size: 0.95rem;
      box-shadow: 0 4px 15px rgba(211, 47, 47, 0.4);
      transition: all 0.3s ease;
      z-index: 50;
      min-width: 120px;
      clip-path: polygon(0 0, calc(100% - 15px) 0, 100% 50%, calc(100% - 15px) 100%, 0 100%, 15px 50%);
      display: flex;
      gap: 2em;
      align-items: center;
      flex-wrap: wrap;
    }
    .ribbon::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: linear-gradient(45deg, 
        rgba(255,255,255,0.1) 25%, 
        transparent 25%, 
        transparent 50%, 
        rgba(255,255,255,0.1) 50%, 
        rgba(255,255,255,0.1) 75%, 
        transparent 75%);
      background-size: 8px 8px;
      animation: stripe-move 2s linear infinite;
      z-index: 1;
    }
    .ribbon-text {
      position: relative;
      z-index: 2;
    }
    .ribbon-number {
      font-size: 1.4em;
      font-weight: 900;
      display: block;
      text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    }
    .ribbon-label {
      font-size: 0.7em;
      text-transform: uppercase;
      letter-spacing: 1px;
      opacity: 0.9;
    }
    @keyframes stripe-move {
      0% { background-position: 0 0; }
      100% { background-position: 16px 16px; }
    }
    .ribbon:hover {
      transform: translateX(-8px) scale(1.05);
      box-shadow: 0 8px 25px rgba(211, 47, 47, 0.6);
    }

    .hero-footer {
      margin-top: 2em;
      text-align: center;
      padding-right: 0;
      width: 100%;
    }
    .hero-footer h2 {
      margin: 1.5em 0;
      color: var(--secondary-color);
      font-size: 2.2rem;
      transition: all 0.3s ease;
      text-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }
    .hero-footer h2:hover {
      transform: translateY(-2px);
      text-shadow: 0 4px 8px rgba(48, 63, 159, 0.3);
    }
    .hero-footer button {
      background: linear-gradient(135deg, var(--primary-color), #b71c1c);
      color: white;
      border: none;
      padding: 0.8em 2em;
      font-size: 1.1em;
      border-radius: 25px;
      cursor: pointer;
      box-shadow: var(--shadow);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
      overflow: hidden;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    .hero-footer button::before {
      content: '';
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
      transition: left 0.5s;
    }
    .hero-footer button:hover::before {
      left: 100%;
    }
    .hero-footer button:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
      background: linear-gradient(135deg, #b71c1c, var(--primary-color));
    }

    .content-container {
      max-width: 1200px;
      margin: auto;
      text-align: center;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      height: 100%;
    }
    .content-container h2 {
      font-size: 2.5rem;
      margin-bottom: 1rem;
      color: var(--text-color);
      position: relative;
      display: inline-block;
    }
    .content-container h2::after {
      content: '';
      position: absolute;
      bottom: -10px;
      left: 50%;
      transform: translateX(-50%);
      width: 50px;
      height: 3px;
      background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
      border-radius: 2px;
    }
    .content-container p {
      font-size: 1.2rem;
      color: #666;
      margin-bottom: 2rem;
      line-height: 1.6;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    /* SERVICES */
    .services {
      display: flex;
      justify-content: center;
      gap: 2em;
      flex-wrap: wrap;
      width: 100%;
    }
    .service-card {
      flex: 1 1 320px;
      min-width: 250px;
      padding: 3em 2em;
      border-radius: 20px;
      color: white;
      font-weight: bold;
      font-size: 1.3rem;
      box-shadow: var(--shadow);
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
      overflow: hidden;
      margin: 1em 0;
      display: flex;
      flex-direction: column;
      align-items: center;
      min-height: 180px;
      justify-content: center;
    }
    .service-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
      transition: left 0.5s;
    }
    .service-card:hover::before {
      left: 100%;
    }
    .service-card:hover {
      transform: translateY(-10px) scale(1.02);
      box-shadow: var(--shadow-hover);
    }
    .service-card.red { background: linear-gradient(135deg, var(--primary-color), #b71c1c); }
    .service-card.blue { background: linear-gradient(135deg, var(--secondary-color), #1a237e); }
    .service-description {
      font-weight: 400;
      font-size: 1rem;
      margin-top: 1em;
      color: #fff;
      text-align: center;
      opacity: 0.9;
      line-height: 1.6;
      max-width: 90%;
    }

    /* Catalog */
    .catalog {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 2em;
      margin-top: 2rem;
      padding: 0 1em;
      width: 100%;
    }
    .catalog-card {
      background: white;
      border-radius: 20px;
      box-shadow: var(--shadow);
      display: flex;
      flex-direction: column;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      cursor: pointer;
      overflow: hidden;
      position: relative;
    }
    .catalog-card:hover {
      transform: translateY(-15px);
      box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    }
    .catalog-image-container {
      position: relative;
      overflow: hidden;
      height: 250px;
      border-radius: 20px 20px 0 0;
    }
    .catalog-card img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      transition: all 0.4s ease;
    }
    .catalog-content {
      padding: 1.5em;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .catalog-title {
      font-size: 1.1rem;
      font-weight: bold;
      color: var(--text-color);
      margin-bottom: 0.5em;
      text-align: center;
    }
    .catalog-description {
      font-size: 0.9rem;
      color: #666;
      margin-bottom: 1em;
      text-align: center;
      line-height: 1.4;
    }
    .catalog-card button {
      background: linear-gradient(135deg, var(--primary-color), #b71c1c);
      color: white;
      border: none;
      padding: 0.8em 1.5em;
      border-radius: 25px;
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      position: relative;
      overflow: hidden;
      margin-top: auto;
    }
    .catalog-card button::before {
      content: '';
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
      transition: left 0.5s;
    }
    .catalog-card button:hover::before {
      left: 100%;
    }
    .catalog-card button:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(211, 47, 47, 0.4);
      background: linear-gradient(135deg, #b71c1c, var(--primary-color));
    }

    /* CONTACTS */
    #contacts .content-container {
      display: flex;
      flex-direction: column;
      justify-content: flex-start;
      align-items: center;
      width: 100%;
      max-width: 900px;
      margin: auto;
      gap: 0;
      height: 100%;
    }
    .contact-details {
      width: 100%;
      margin-bottom: 2.5rem;
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    .contact-details h2 {
      text-align: center;
      margin-bottom: 2rem;
      margin-top: 2rem;
      width: 100%;
    }
    .contact-item {
      display: flex;
      align-items: center;
      margin-bottom: 1.2em;
      padding: 1em;
      background: white;
      border-radius: 10px;
      box-shadow: var(--shadow);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      width: 100%;
      max-width: 440px;
    }
    .contact-item:hover {
      transform: translateX(10px);
      box-shadow: var(--shadow-hover);
      background: #f8f9fa;
    }
    .contact-icon {
      width: 50px;
      height: 50px;
      background: linear-gradient(135deg, var(--primary-color), #b71c1c);
      color: white;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-right: 1em;
      transition: all 0.3s ease;
      box-shadow: 0 4px 10px rgba(211, 47, 47, 0.3);
      font-size: 1.3em;
      flex-shrink: 0;
    }
    .contact-item:hover .contact-icon {
      transform: scale(1.1) rotate(5deg);
      background: linear-gradient(135deg, var(--secondary-color), #1a237e);
    }
    .map-container {
      border-radius: 15px;
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: all 0.3s ease;
      width: 100%;
      max-width: 700px;
      margin: 0 auto 2.5rem auto;
      min-height: 350px;
    }
    .map-container:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-5px);
    }
    .map-container iframe {
      width: 100%;
      height: 350px;
      border: none;
      border-radius: 15px;
      transition: all 0.3s ease;
      display: block;
    }

    /* FOOTER */
    footer {
      background: linear-gradient(135deg, var(--primary-color), #b71c1c);
      color: white;
      text-align: center;
      padding: 2em;
      font-size: 1.1rem;
      position: relative;
      overflow: hidden;
    }
    footer::before {
      content: '';
      position: absolute;
      top: -50%;
      left: -50%;
      width: 200%;
      height: 200%;
      background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
      background-size: 20px 20px;
      animation: twinkle 20s linear infinite;
    }
    @keyframes twinkle {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }

    /* Responsive Design */
    @media (max-width: 1024px) {
      .slider-container { width: 96vw; }
    }
    @media (max-width: 900px) {
      .catalog { padding: 0; }
    }
    @media (max-width: 768px) {
      nav {
        padding: 1em;
      }
      nav a {
        margin-left: 0.8em;
        font-size: 0.9rem;
      }
      section {
        padding: 0.5em;
        min-height: 100vh;
      }
      #home {
        padding: 0.5em 1em 1em 1em;
      }
      .slider-container {
        height: 35vh;
        min-height: 200px;
      }
      .ribbon {
        position: static;
        clip-path: none;
        border-radius: 15px;
        margin-top: 1em;
        padding: 1em;
        text-align: center;
        display: flex;
        justify-content: space-around;
        background: linear-gradient(135deg, var(--primary-color), #b71c1c);
        right: unset;
      }
      .services {
        flex-direction: column;
        align-items: center;
      }
      .catalog {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1.5em;
        padding: 0 0.5em;
      }
      #contacts .content-container {
        max-width: 98vw;
      }
    }
    @media (max-width: 540px) {
      .slider-container { height: 25vh; min-width: 90vw;}
      .hero-footer h2 { font-size: 1.15rem; }
      .content-container h2 { font-size: 1.35rem; }
      nav a { margin-left: 0.5em; font-size: 0.85rem;}
      .catalog {
        grid-template-columns: 1fr;
        gap: 1em;
      }
      .service-card {
        font-size: 1.04rem;
        padding: 1.5em 1.2em;
        min-width: 180px;
      }
      .ribbon { flex-direction: column; gap: 0.5em; }
    }