:root {
    --neon-blue: #00f3ff;
    --neon-pink: #ff00ff;
    --neon-green: #39ff14;
    --dark-bg: #0a0a0f;
    --card-bg: #1a1a24;
  }

  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", sans-serif;
  }

  body {
    background-color: var(--dark-bg);
    color: #fff;
    min-height: 100vh;
    padding: 2rem;
    background-image: linear-gradient(
        45deg,
        rgba(26, 26, 46, 0.8) 25%,
        transparent 25%
      ),
      linear-gradient(-45deg, rgba(26, 26, 46, 0.8) 25%, transparent 25%),
      linear-gradient(45deg, transparent 75%, rgba(26, 26, 46, 0.8) 75%),
      linear-gradient(-45deg, transparent 75%, rgba(26, 26, 46, 0.8) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  }

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

  .header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
  }

  .title {
    font-size: 3.5rem;
    text-transform: uppercase;
    letter-spacing: 4px;
    margin-bottom: 1rem;
    text-shadow: 0 0 10px var(--neon-blue), 0 0 20px var(--neon-blue),
      0 0 30px var(--neon-blue);
    animation: glow 1.5s ease-in-out infinite alternate;
  }

  .subtitle {
    color: var(--neon-green);
    font-size: 1.2rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
  }

  .era-badge {
    background: rgba(57, 255, 20, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 1px solid var(--neon-green);
    display: inline-block;
    margin-bottom: 2rem;
  }

  @keyframes glow {
    from {
      text-shadow: 0 0 10px var(--neon-blue), 0 0 20px var(--neon-blue),
        0 0 30px var(--neon-blue);
    }
    to {
      text-shadow: 0 0 20px var(--neon-blue), 0 0 30px var(--neon-blue),
        0 0 40px var(--neon-blue);
    }
  }

  .search-container {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
  }

  .filter-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
  }

  .era-filter {
    background: transparent;
    border: 1px solid var(--neon-green);
    color: var(--neon-green);
    padding: 0.5rem 1rem;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
  }

  .era-filter.active {
    background: var(--neon-green);
    color: var(--dark-bg);
  }

  .search-input {
    padding: 1rem 2rem;
    width: 60%;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid var(--neon-blue);
    border-radius: 25px;
    color: #fff;
    font-size: 1.1rem;
    outline: none;
    transition: all 0.3s ease;
  }

  .search-input:focus {
    box-shadow: 0 0 15px var(--neon-blue);
  }

  .search-btn {
    padding: 1rem 2rem;
    background: transparent;
    border: 2px solid var(--neon-pink);
    color: var(--neon-pink);
    border-radius: 25px;
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 2px;
  }

  .search-btn:hover {
    background: var(--neon-pink);
    color: #fff;
    box-shadow: 0 0 15px var(--neon-pink);
  }

  .movie-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    padding: 1rem;
  }

  .movie-card {
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 243, 255, 0.1);
    position: relative;
  }

  .movie-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.3);
  }

  .vintage-tag {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(255, 0, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 15px;
    color: var(--neon-pink);
    font-size: 0.8rem;
    z-index: 1;
  }

  .movie-poster {
    width: 100%;
    height: 400px;
    object-fit: cover;
  }

  .movie-info {
    padding: 1.5rem;
  }

  .movie-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--neon-blue);
  }

  .movie-year {
    color: var(--neon-green);
    margin-bottom: 1rem;
    font-size: 1.2rem;
  }

  .movie-rating {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(255, 0, 255, 0.1);
    border-radius: 15px;
    color: var(--neon-pink);
    margin-bottom: 1rem;
  }

  .movie-plot {
    color: #ccc;
    line-height: 1.6;
  }

  .loading {
    text-align: center;
    font-size: 1.5rem;
    color: var(--neon-blue);
    display: none;
  }

  @media (max-width: 768px) {
    .title {
      font-size: 2.5rem;
    }
    .search-container {
      flex-direction: column;
    }
    .search-input {
      width: 100%;
    }
    .filter-container {
      flex-wrap: wrap;
    }
  }

  :root {
    --dark-bg: #0a0a0f;
    --card-bg: #1a1a2e;
    --neon-blue: #00f3ff;
    --neon-pink: #ff00ff;
    --neon-green: #00ff9d;
  }

  body {
    margin: 0;
    font-family: "Arial", sans-serif;
    background: var(--dark-bg);
    min-height: 100vh;
  }

  .help-btn {
    position: fixed;
    bottom: clamp(1rem, 4vw, 2rem);
    right: clamp(1rem, 4vw, 2rem);
    width: clamp(40px, 8vw, 50px);
    height: clamp(40px, 8vw, 50px);
    border-radius: 50%;
    background: var(--dark-bg);
    border: 2px solid var(--neon-green);
    color: var(--neon-green);
    font-size: clamp(1.2rem, 4vw, 1.5rem);
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
  }

  .modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 15, 0.9);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1001;
    backdrop-filter: blur(5px);
    padding: clamp(0.5rem, 3vw, 2rem);
  }

  .modal {
    background: var(--card-bg);
    border: 2px solid var(--neon-blue);
    border-radius: clamp(10px, 3vw, 20px);
    padding: clamp(1rem, 4vw, 2rem);
    max-width: min(600px, 95%);
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: modalAppear 0.3s ease-out;
  }

  .modal-header {
    text-align: center;
    margin-bottom: clamp(1rem, 4vw, 2rem);
  }

  .modal-title {
    color: var(--neon-blue);
    font-size: clamp(1.5rem, 5vw, 2rem);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
  }

  .subtitle {
    color: #fff;
    font-size: clamp(1rem, 3vw, 1.2rem);
    margin: 0;
  }

  .instruction-step {
    margin-bottom: clamp(1rem, 3vw, 1.5rem);
    padding: clamp(0.75rem, 2vw, 1rem);
    border: 1px solid rgba(0, 243, 255, 0.2);
    border-radius: 10px;
    background: rgba(26, 26, 46, 0.5);
  }

  .step-number {
    color: var(--neon-pink);
    font-size: clamp(1rem, 3vw, 1.2rem);
    margin-bottom: 0.5rem;
    display: block;
  }

  .step-content {
    color: #fff;
    line-height: 1.6;
    font-size: clamp(0.9rem, 2.5vw, 1rem);
    margin: 0.5rem 0;
  }

  .close-modal {
    position: absolute;
    top: clamp(0.5rem, 2vw, 1rem);
    right: clamp(0.5rem, 2vw, 1rem);
    background: transparent;
    border: none;
    color: var(--neon-pink);
    font-size: clamp(1.2rem, 4vw, 1.5rem);
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
  }

  .feature-list {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0;
  }

  .feature-item {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: clamp(0.85rem, 2.5vw, 0.95rem);
    color: #fff;
  }

  .feature-item::before {
    content: "→";
    color: var(--neon-green);
    flex-shrink: 0;
  }

  @keyframes modalAppear {
    from {
      opacity: 0;
      transform: translateY(-20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Scrollbar styling */
  .modal::-webkit-scrollbar {
    width: 8px;
  }

  .modal::-webkit-scrollbar-track {
    background: rgba(26, 26, 46, 0.5);
    border-radius: 4px;
  }

  .modal::-webkit-scrollbar-thumb {
    background: var(--neon-blue);
    border-radius: 4px;
  }

  /* Touch device optimization */
  @media (hover: none) {
    .help-btn:active {
      transform: scale(0.95);
    }

    .close-modal:active {
      transform: scale(0.95);
    }
  }

  /* Small screen adjustments */
  @media (max-width: 480px) {
    .modal {
      margin: 0;
    }

    .feature-list {
      margin-left: 0.5rem;
    }

    .instruction-step {
      margin-bottom: 1rem;
    }
  }

  /* Landscape mode optimization */
  @media (max-height: 600px) and (orientation: landscape) {
    .modal {
      max-height: 85vh;
    }

    .modal-header {
      margin-bottom: 1rem;
    }

    .instruction-step {
      padding: 0.75rem;
      margin-bottom: 0.75rem;
    }
  }