/* ============================================
   DUAL CARD SLIDER - Mobile & Desktop
   ============================================ */

/* Mobile Styles (768px and below) */
@media (max-width: 768px) {
  /* Section spacing */
  .bg-subtle-pattern {
    padding: 60px 0 80px !important;
  }

  /* Container for the dual card */
  .dual-card-container {
    position: relative;
    width: 100%;
    max-width: 380px;
    margin: 40px auto 0;
    perspective: 1500px;
    padding-bottom: 20px;
  }

  /* The sliding card wrapper */
  .dual-card-slider {
    position: relative;
    width: 100%;
    height: auto;
    min-height: 480px;
    transform-style: preserve-3d;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  }

  /* Individual card faces */
  .dual-card-face {
    position: absolute;
    width: 100%;
    height: auto;
    min-height: 480px;
    backface-visibility: hidden;
    border-radius: 28px;
    padding: 32px 28px 90px;
    box-shadow: 
      0 20px 60px rgba(0, 0, 0, 0.15),
      0 8px 25px rgba(0, 0, 0, 0.1);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: visible;
  }

  /* Supermarket Card - Front - Dark background for better contrast */
  .dual-card-face.supermarket {
    background: linear-gradient(135deg, #1a0a0a 0%, #0f0a0a 100%);
    color: white;
    transform: rotateY(0deg);
    z-index: 2;
  }

  /* Brand Card - Back - White background */
  .dual-card-face.brand {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    color: var(--dark);
    transform: rotateY(180deg);
    z-index: 1;
    border: 1px solid rgba(0, 0, 0, 0.08);
  }

  /* Flip animation states */
  .dual-card-slider.flipped {
    transform: rotateY(180deg);
  }

  /* Card content styling */
  .dual-card-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 20px;
  }

  .dual-card-face.supermarket .dual-card-badge {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
  }

  .dual-card-face.brand .dual-card-badge {
    background: var(--dark);
    color: white;
  }

  .dual-card-title {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.2;
    letter-spacing: -0.02em;
  }

  .dual-card-face.supermarket .dual-card-title {
    color: white;
  }

  .dual-card-face.brand .dual-card-title {
    color: var(--dark);
  }

  .dual-card-text {
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 24px;
    opacity: 0.9;
  }

  .dual-card-face.supermarket .dual-card-text {
    color: rgba(255, 255, 255, 0.8);
  }

  .dual-card-face.brand .dual-card-text {
    color: var(--gray-600);
  }

  /* Feature pills */
  .dual-card-features {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 28px;
  }

  .dual-feature-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    transition: transform 0.3s ease;
  }

  .dual-card-face.supermarket .dual-feature-pill {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.15);
  }

  .dual-card-face.brand .dual-feature-pill {
    background: var(--gray-100);
    color: var(--gray-700);
    border: 1px solid var(--gray-200);
  }

  .dual-feature-pill:active {
    transform: scale(0.95);
  }

  .dual-feature-pill i {
    font-size: 12px;
  }

  .dual-card-face.supermarket .dual-feature-pill i {
    color: var(--primary-light);
  }

  .dual-card-face.brand .dual-feature-pill i {
    color: var(--primary);
  }

  /* CTA Button */
  .dual-card-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 16px 24px;
    border-radius: 14px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
  }

  .dual-card-face.supermarket .dual-card-btn {
    background: linear-gradient(90deg, #FF4136 0%, #FF8C42 100%);
    color: white;
    box-shadow: 0 8px 25px rgba(255, 65, 54, 0.4);
  }

  .dual-card-face.brand .dual-card-btn {
    background: var(--dark);
    color: white;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
  }

  .dual-card-btn:active {
    transform: scale(0.97);
  }

  /* Toggle Switch */
  .dual-card-toggle {
    display: flex;
    justify-content: center;
    margin-top: 50px;
    gap: 12px;
  }

  .toggle-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    background: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  }

  .toggle-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 6px 20px rgba(229, 57, 53, 0.3);
  }

  .toggle-btn:not(.active) {
    color: var(--gray-600);
    border-color: var(--gray-200);
  }

  .toggle-btn:not(.active):active {
    background: var(--gray-100);
  }

  /* Floating animation for the card */
  .dual-card-container.float-animation {
    animation: card-float 6s ease-in-out infinite;
  }

  @keyframes card-float {
    0%, 100% { 
      transform: translateY(0) rotate(0deg);
    }
    50% { 
      transform: translateY(-10px) rotate(1deg);
    }
  }

  /* Glow effect behind card */
  .dual-card-container::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 90%;
    height: 90%;
    background: linear-gradient(135deg, rgba(229, 57, 53, 0.3) 0%, rgba(255, 193, 7, 0.2) 100%);
    border-radius: 40px;
    transform: translate(-50%, -50%);
    filter: blur(40px);
    opacity: 0.5;
    z-index: -1;
    animation: glow-pulse 4s ease-in-out infinite;
  }

  @keyframes glow-pulse {
    0%, 100% { opacity: 0.3; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.6; transform: translate(-50%, -50%) scale(1.1); }
  }

  /* Swipe hint - hidden */
  .swipe-hint {
    display: none;
  }
}

/* Desktop Styles (769px and above) - Balanced & Floating */
@media (min-width: 769px) {
  /* Section spacing - more breathing room */
  .bg-subtle-pattern {
    padding: 100px 0 120px !important;
  }

  /* Container for the dual card - centered with more space */
  .dual-card-container {
    position: relative;
    width: 100%;
    max-width: 480px;
    margin: 60px auto 40px;
    perspective: 1500px;
    padding: 20px 0 40px;
  }

  /* The sliding card wrapper - better floating */
  .dual-card-slider {
    position: relative;
    width: 100%;
    height: auto;
    min-height: 540px;
    transform-style: preserve-3d;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  }

  /* Individual card faces - larger and more premium */
  .dual-card-face {
    position: absolute;
    width: 100%;
    height: auto;
    min-height: 540px;
    backface-visibility: hidden;
    border-radius: 32px;
    padding: 44px 40px 110px;
    box-shadow: 
      0 30px 80px rgba(0, 0, 0, 0.2),
      0 15px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: visible;
  }

  /* Supermarket Card - Front - Dark background for better contrast */
  .dual-card-face.supermarket {
    background: linear-gradient(135deg, #1a0a0a 0%, #0f0a0a 100%);
    color: white;
    transform: rotateY(0deg);
    z-index: 2;
  }

  /* Brand Card - Back - White background */
  .dual-card-face.brand {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    color: var(--dark);
    transform: rotateY(180deg);
    z-index: 1;
    border: 1px solid rgba(0, 0, 0, 0.08);
  }

  /* Flip animation states */
  .dual-card-slider.flipped {
    transform: rotateY(180deg);
  }

  /* Card content styling */
  .dual-card-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 24px;
  }

  .dual-card-face.supermarket .dual-card-badge {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
  }

  .dual-card-face.brand .dual-card-badge {
    background: var(--dark);
    color: white;
  }

  .dual-card-title {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
    letter-spacing: -0.02em;
  }

  .dual-card-face.supermarket .dual-card-title {
    color: white;
  }

  .dual-card-face.brand .dual-card-title {
    color: var(--dark);
  }

  .dual-card-text {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 28px;
    opacity: 0.9;
  }

  .dual-card-face.supermarket .dual-card-text {
    color: rgba(255, 255, 255, 0.8);
  }

  .dual-card-face.brand .dual-card-text {
    color: var(--gray-600);
  }

  /* Feature pills */
  .dual-card-features {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 32px;
  }

  .dual-feature-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 18px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
  }

  .dual-card-face.supermarket .dual-feature-pill {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.15);
  }

  .dual-card-face.brand .dual-feature-pill {
    background: var(--gray-100);
    color: var(--gray-700);
    border: 1px solid var(--gray-200);
  }

  .dual-feature-pill:hover {
    transform: scale(1.02);
  }

  .dual-feature-pill i {
    font-size: 13px;
  }

  .dual-card-face.supermarket .dual-feature-pill i {
    color: var(--primary-light);
  }

  .dual-card-face.brand .dual-feature-pill i {
    color: var(--primary);
  }

  /* CTA Button */
  .dual-card-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 18px 28px;
    border-radius: 16px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
  }

  .dual-card-face.supermarket .dual-card-btn {
    background: linear-gradient(90deg, #FF4136 0%, #FF8C42 100%);
    color: white;
    box-shadow: 0 10px 30px rgba(255, 65, 54, 0.4);
  }

  .dual-card-face.supermarket .dual-card-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 40px rgba(255, 65, 54, 0.5);
  }

  .dual-card-face.brand .dual-card-btn {
    background: var(--dark);
    color: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  }

  .dual-card-face.brand .dual-card-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.3);
  }

  /* Toggle Switch - clearly visible below card */
  .dual-card-toggle {
    display: flex;
    justify-content: center;
    margin-top: 60px;
    gap: 16px;
    position: relative;
    z-index: 10;
  }

  .toggle-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    background: white;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  }

  .toggle-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 8px 25px rgba(229, 57, 53, 0.3);
  }

  .toggle-btn:not(.active) {
    color: var(--gray-600);
    border-color: var(--gray-200);
  }

  .toggle-btn:not(.active):hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
  }

  /* Enhanced floating animation */
  .dual-card-container.float-animation {
    animation: card-float-desktop 6s ease-in-out infinite;
  }

  @keyframes card-float-desktop {
    0%, 100% { 
      transform: translateY(0);
    }
    50% { 
      transform: translateY(-15px);
    }
  }

  /* Enhanced glow effect behind card */
  .dual-card-container::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 85%;
    height: 85%;
    background: linear-gradient(135deg, rgba(229, 57, 53, 0.25) 0%, rgba(255, 193, 7, 0.15) 100%);
    border-radius: 50px;
    transform: translate(-50%, -50%);
    filter: blur(50px);
    opacity: 0.6;
    z-index: -1;
    animation: glow-pulse-desktop 4s ease-in-out infinite;
  }

  @keyframes glow-pulse-desktop {
    0%, 100% { opacity: 0.4; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.7; transform: translate(-50%, -50%) scale(1.05); }
  }

  /* Swipe hint - hidden */
  .swipe-hint {
    display: none;
  }
}

/* Large Desktop */
@media (min-width: 1200px) {
  .dual-card-container {
    max-width: 520px;
  }

  .dual-card-slider {
    min-height: 560px;
  }

  .dual-card-face {
    min-height: 560px;
    padding: 48px 44px 120px;
  }

  .dual-card-title {
    font-size: 34px;
  }

  .dual-card-text {
    font-size: 17px;
  }
}