/* --- ROOT VARIABLES --- */
  :root {
      --color-black: #111111;
      --color-red: #D9232D;
      --color-gray-light: #F4F5F7;
      --color-white: #ffffff;
      --font-main: 'Manrope', sans-serif;
      --font-headings: 'Montserrat', sans-serif;
      --transition-smooth: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
  }

  html,
  body {
      overflow-x: hidden;
  }

  /* --- GLOBAL RESETS --- */
  body {
      font-family: var(--font-main);
      background-color: var(--color-gray-light);
      color: var(--color-black);
      overflow-x: hidden;
      padding-top: 0;
  }

  h1,
  h2,
  h3,
  h4,
  h5,
  h6,
  .btn-primary-custom {
      font-family: var(--font-headings);
  }



  /* =========================================
           1. PRODUCT HERO SECTION
        ========================================= */
  .bt-sp-hero {
      position: relative;
      width: 100%;
      height: 60vh;
      min-height: 400px;
      display: flex;
      align-items: center;
      justify-content: center;
      background-image: url('../images/banners/home-ban-2.jpg');
      background-size: cover;
      background-position: center;
      background-attachment: fixed;
      color: var(--color-white);
      text-align: center;
  }

  .bt-sp-hero-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: linear-gradient(to bottom, rgba(10, 10, 10, 0.8) 0%, rgba(10, 10, 10, 0.95) 100%);
      z-index: 1;
  }

  .bt-sp-hero-content {
      position: relative;
      z-index: 2;
      padding: 0 20px;
  }

  .bt-sp-breadcrumbs {
      margin-bottom: 20px;
      font-size: 0.85rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 2px;
      color: rgba(255, 255, 255, 0.6);
  }

  .bt-sp-breadcrumbs a {
      color: rgba(255, 255, 255, 0.6);
      text-decoration: none;
      transition: 0.3s;
  }

  .bt-sp-breadcrumbs a:hover {
      color: var(--color-red);
  }

  .bt-sp-hero-title {
      font-size: 4.5rem;
      font-weight: 900;
      text-transform: uppercase;
      margin-bottom: 15px;
      line-height: 1.1;
      letter-spacing: -1px;
      text-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  }

  .bt-sp-hero-title span {
      color: var(--color-red);
  }

  /* =========================================
           2. PRODUCT OVERVIEW SECTION
        ========================================= */
  .bt-sp-overview {
      padding: 100px 0;
      background-color: var(--color-white);
  }

  /* Image Side */
  .bt-sp-img-col {
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      padding: 10px;
      /* Reduced padding to allow bigger image */
  }

  .bt-sp-main-img-wrapper {
      position: relative;
      width: 100%;
      display: flex;
      justify-content: center;
      align-items: center;
      margin-bottom: 30px;
  }

  .bt-sp-backdrop {
      position: absolute;
      width: 85%;
      /* Increased width */
      height: 90%;
      /* Increased height */
      background-color: #1a1a1a;
      top: 5%;
      left: 8%;
      z-index: 0;
      box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
      border-radius: 8px;
  }

  .bt-sp-product-img {
      position: relative;
      width: 100%;
      /* Full width of the column */
      max-width: 600px;
      /* Increased max constraint */
      z-index: 2;
      filter: drop-shadow(0 30px 40px rgba(0, 0, 0, 0.4));
      animation: floatUpDown 5s ease-in-out infinite;
      transform-origin: center center;
      object-fit: contain;
      /* Ensure it doesn't get cropped */
  }

  @keyframes floatUpDown {

      0%,
      100% {
          transform: translateY(0px) scale(1);
      }

      50% {
          transform: translateY(-15px) scale(1.02);
      }
  }

  /* Thumbnails Styling */
  .bt-sp-thumbnails {
      display: flex;
      gap: 15px;
      justify-content: center;
      z-index: 2;
  }

  .bt-sp-thumb {
      width: 80px;
      height: 80px;
      border-radius: 8px;
      overflow: hidden;
      cursor: pointer;
      border: 3px solid transparent;
      transition: all 0.3s ease;
      box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
      background: #fff;
  }

  .bt-sp-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
  }

  .bt-sp-thumb:hover {
      transform: translateY(-5px);
  }

  .bt-sp-thumb.bt-active {
      border-color: var(--color-red);
      transform: translateY(-5px);
      box-shadow: 0 15px 25px rgba(227, 30, 36, 0.2);
  }

  /* Content Side */
  .bt-sp-tag {
      display: inline-block;
      background: rgba(227, 30, 36, 0.1);
      color: var(--color-red);
      padding: 6px 15px;
      font-size: 0.85rem;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 2px;
      margin-bottom: 20px;
      border-left: 3px solid var(--color-red);
  }

  .bt-sp-heading {
      font-size: 3rem;
      font-weight: 900;
      color: var(--color-black);
      line-height: 1.1;
      margin-bottom: 25px;
      text-transform: uppercase;
  }

  .bt-sp-desc {
      font-size: 1.1rem;
      color: #555;
      line-height: 1.8;
      margin-bottom: 30px;
  }

  .bt-sp-highlight-box {
      background: var(--color-gray);
      border-left: 4px solid var(--color-red);
      padding: 20px;
      margin-bottom: 40px;
      border-radius: 0 4px 4px 0;
  }

  .bt-sp-highlight-box p {
      margin: 0;
      font-weight: 700;
      color: var(--color-black);
      font-size: 1.05rem;
  }

  /* Buttons */
  .bt-sp-btn-group {
      display: flex;
      gap: 20px;
  }

  .bt-sp-btn-primary {
      background-color: var(--color-red);
      color: var(--color-white);
      padding: 16px 40px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 1px;
      text-decoration: none;
      transition: 0.3s;
      position: relative;
      overflow: hidden;
      border: 2px solid var(--color-red);
  }

  .bt-sp-btn-primary:hover {
      background-color: transparent;
      color: var(--color-red);
  }

  .bt-sp-btn-outline {
      background-color: transparent;
      color: var(--color-black);
      padding: 16px 40px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 1px;
      text-decoration: none;
      transition: 0.3s;
      border: 2px solid var(--color-black);
  }

  .bt-sp-btn-outline:hover {
      background-color: var(--color-black);
      color: var(--color-white);
  }

  /* =========================================
           3. FEATURES SECTION (Dark)
        ========================================= */
  .bt-sp-features-sec {
      padding: 100px 0;
      background-color: var(--color-black);
      color: var(--color-white);
  }

  .bt-sp-sec-title-center {
      text-align: center;
      margin-bottom: 60px;
  }

  .bt-sp-sec-title-center h2 {
      font-size: 3rem;
      font-weight: 900;
      text-transform: uppercase;
      letter-spacing: -1px;
  }

  .bt-sp-sec-title-center span {
      color: var(--color-red);
  }

  .bt-sp-feat-card {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.05);
      padding: 40px 30px;
      text-align: center;
      border-radius: 8px;
      transition: all 0.4s ease;
      height: 100%;
      position: relative;
      overflow: hidden;
  }

  .bt-sp-feat-card::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: var(--color-red);
      transform: scaleX(0);
      transition: transform 0.4s ease;
  }

  .bt-sp-feat-card:hover {
      transform: translateY(-10px);
      background: rgba(255, 255, 255, 0.05);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  }

  .bt-sp-feat-card:hover::after {
      transform: scaleX(1);
  }

  .bt-sp-feat-icon {
      font-size: 3rem;
      color: var(--color-red);
      margin-bottom: 20px;
      transition: 0.4s;
  }

  .bt-sp-feat-card:hover .bt-sp-feat-icon {
      transform: scale(1.1);
      text-shadow: 0 0 20px rgba(227, 30, 36, 0.5);
  }

  .bt-sp-feat-card h4 {
      font-size: 1.2rem;
      font-weight: 800;
      text-transform: uppercase;
      margin-bottom: 15px;
  }

  .bt-sp-feat-card p {
      color: rgba(255, 255, 255, 0.6);
      font-size: 0.95rem;
      margin: 0;
  }

  /* =========================================
           4. TECHNICAL SPECIFICATIONS
        ========================================= */
  .bt-sp-specs-sec {
      padding: 100px 0;
      background-color: var(--color-gray);
  }

  .bt-sp-specs-wrapper {
      background: var(--color-white);
      border-radius: 8px;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.05);
      overflow: hidden;
  }

  .bt-sp-spec-row {
      display: flex;
      border-bottom: 1px solid rgba(0, 0, 0, 0.05);
      transition: 0.3s;
  }

  .bt-sp-spec-row:last-child {
      border-bottom: none;
  }

  .bt-sp-spec-row:hover {
      background-color: rgba(227, 30, 36, 0.03);
  }

  .bt-sp-spec-title {
      flex: 0 0 30%;
      padding: 25px 30px;
      font-weight: 800;
      color: var(--color-black);
      background-color: rgba(0, 0, 0, 0.02);
      text-transform: uppercase;
      font-size: 0.95rem;
      letter-spacing: 1px;
      display: flex;
      align-items: center;
  }

  .bt-sp-spec-value {
      flex: 1;
      padding: 25px 30px;
      color: #555;
      font-size: 1rem;
      font-weight: 500;
      display: flex;
      align-items: center;
  }

  /* =========================================
           5. CTA / ENQUIRY SECTION
        ========================================= */
  .bt-sp-cta-sec {
      padding: 100px 0;
      background-image: linear-gradient(135deg, rgba(227, 30, 36, 0.95), rgba(150, 10, 15, 0.95)), url('../images/backgrounds/home-cta-bg.jpg');
      background-size: cover;
      background-position: center;
      background-attachment: fixed;
      color: var(--color-white);
  }

  .bt-sp-cta-content {
      text-align: center;
      max-width: 800px;
      margin: 0 auto;
  }

  .bt-sp-cta-content h2 {
      font-size: 3.5rem;
      font-weight: 900;
      text-transform: uppercase;
      margin-bottom: 20px;
      letter-spacing: -1px;
  }

  .bt-sp-cta-content p {
      font-size: 1.2rem;
      margin-bottom: 40px;
      color: rgba(255, 255, 255, 0.9);
  }

  .bt-sp-form {
      background: var(--color-white);
      padding: 40px;
      border-radius: 8px;
      box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
      text-align: left;
  }

  .bt-sp-form .form-control {
      border: 1px solid #ddd;
      padding: 15px 20px;
      border-radius: 4px;
      margin-bottom: 20px;
      font-size: 0.95rem;
  }

  .bt-sp-form .form-control:focus {
      border-color: var(--color-red);
      box-shadow: none;
  }

  .bt-sp-form-btn {
      width: 100%;
      background: var(--color-black);
      color: var(--color-white);
      padding: 18px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 2px;
      border: none;
      border-radius: 4px;
      transition: 0.3s;
  }

  .bt-sp-form-btn:hover {
      background: var(--color-red);
      transform: translateY(-3px);
  }

  /* Responsive */
  @media (max-width: 991px) {
      .bt-sp-hero-title {
          font-size: 3rem;
      }

      .bt-sp-heading {
          font-size: 2.5rem;
      }

      .bt-sp-img-col {
          margin-bottom: 50px;
      }

      .bt-sp-btn-group {
          flex-direction: column;
      }

      .bt-sp-btn-primary,
      .bt-sp-btn-outline {
          text-align: center;
          width: 100%;
      }

      .bt-sp-spec-row {
          flex-direction: column;
      }

      .bt-sp-spec-title {
          padding: 15px 20px;
      }

      .bt-sp-spec-value {
          padding: 15px 20px 25px 20px;
      }

      .bt-sp-cta-content h2 {
          font-size: 2.5rem;
      }
  }

  @media (max-width: 768px) {

      .bt-sp-hero,
      .bt-sp-cta-sec {
          background-attachment: scroll;
      }
  }