@layer base, components, utilities;

@layer base {
  :root {
    --bg-color: oklch(0.15 0.05 250);
    --card-bg: oklch(0.25 0.05 250 / 0.8);
    --text-primary: oklch(0.98 0.01 250);
    --text-secondary: oklch(0.8 0.05 250);
    --accent-color: oklch(0.7 0.2 250);
    --ball-yellow: oklch(0.85 0.18 85);
    --ball-blue: oklch(0.65 0.18 250);
    --ball-red: oklch(0.65 0.22 25);
    --ball-gray: oklch(0.7 0.05 0);
    --ball-green: oklch(0.75 0.18 145);
    
    --shadow-deep: 0 10px 30px -5px oklch(0 0 0 / 0.5);
    --glow-effect: 0 0 20px oklch(0.7 0.2 250 / 0.4);
    
    --input-bg: oklch(1 0 0 / 0.05);
    --input-border: oklch(1 0 0 / 0.1);
    --input-focus: oklch(0.7 0.2 250 / 0.5);
    
    --nav-height: 70px;
  }

  html {
    scroll-behavior: smooth;
  }

  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  body {
    font-family: 'Pretendard', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-y: auto;
    position: relative;
    padding-top: var(--nav-height);
  }

  .background-texture {
    position: fixed;
    inset: 0;
    background-image: radial-gradient(circle at 50% 50%, oklch(0.3 0.1 250 / 0.1), transparent);
    z-index: -1;
  }

  .background-texture::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.05;
    mix-blend-mode: overlay;
  }
}

@layer components {
  /* Navbar Styles */
  .navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: oklch(0.15 0.05 250 / 0.8);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid oklch(1 0 0 / 0.1);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .nav-content {
    width: min(90%, 800px);
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.05em;
  }

  .nav-links {
    display: flex;
    gap: 2rem;
  }

  .nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1rem;
    transition: color 0.2s ease;
  }

  .nav-link:hover {
    color: var(--accent-color);
  }

  .scroll-offset {
    scroll-margin-top: calc(var(--nav-height) + 2rem);
  }

  .container {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid oklch(1 0 0 / 0.1);
    border-radius: 2rem;
    padding: 3rem;
    width: min(90%, 600px);
    box-shadow: var(--shadow-deep);
    text-align: center;
    container-type: inline-size;
    display: flex;
    flex-direction: column;
    gap: 4rem;
    margin-top: 2rem;
    margin-bottom: 4rem;
  }

  .header h1, .header h2 {
    font-size: clamp(2rem, 8cqw, 3rem);
    letter-spacing: -0.05em;
    font-weight: 800;
    margin-bottom: 0.5rem;
  }

  .highlight {
    color: var(--accent-color);
    text-shadow: var(--glow-effect);
  }

  .header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 1rem;
  }

  .rich-content {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    max-width: 500px;
    margin: 0 auto 1.5rem;
    text-align: center;
    opacity: 0.9;
  }

  /* Lotto Styles */
  .ball-container-wrapper {
    min-height: 120px;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .ball-container {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
  }

  .placeholder {
    font-size: 1.2rem;
    color: var(--text-secondary);
    opacity: 0.5;
    font-style: italic;
  }

  /* AI Section Styles */
  .ai-test-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
  }

  .image-preview-container {
    width: 200px;
    height: 200px;
    border-radius: 1.5rem;
    overflow: hidden;
    background: var(--input-bg);
    border: 2px dashed var(--input-border);
    box-shadow: var(--glow-effect);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    transition: border-color 0.3s ease;
  }

  .image-preview-container:has(img[src=""]) {
    border-style: dashed;
  }

  .image-preview-container:not(:has(img[src=""])) {
    border-style: solid;
    border-color: var(--accent-color);
  }

  #image-preview {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 1.5rem;
  }

  .preview-placeholder {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-align: center;
    padding: 1rem;
    opacity: 0.7;
  }

  .label-container {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    text-align: left;
    min-height: 100px;
  }

  .prediction-bar {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
  }

  .prediction-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: 700;
  }

  .bar-bg {
    height: 12px;
    background: var(--input-bg);
    border-radius: 100px;
    overflow: hidden;
    border: 1px solid var(--input-border);
  }

  .bar-fill {
    height: 100%;
    background: var(--accent-color);
    width: 0%;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px var(--accent-color);
  }

  /* Footer Styles */
  .footer {
    width: 100%;
    background: oklch(0.1 0.05 250);
    padding: 3rem 0;
    border-top: 1px solid oklch(1 0 0 / 0.1);
    margin-top: auto;
  }

  .footer-content {
    width: min(90%, 800px);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    text-align: center;
  }

  .footer-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    opacity: 0.7;
  }

  .footer-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
  }

  .footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s ease;
    opacity: 0.8;
  }

  .footer-links a:hover {
    color: var(--accent-color);
    opacity: 1;
  }

  /* Info Pages (About, Privacy, Terms) */
  .info-page {
    text-align: left;
    gap: 2rem;
  }

  .info-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    line-height: 1.7;
  }

  .info-content h3 {
    font-size: 1.2rem;
    color: var(--accent-color);
    margin-top: 1rem;
  }

  .info-content p {
    color: var(--text-secondary);
    font-size: 1rem;
  }

  /* Form/Common Styles */
  .divider {
    height: 1px;
    background: linear-gradient(to right, transparent, var(--input-border), transparent);
  }

  .inquiry-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    text-align: left;
  }

  .form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }

  .form-group label {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-left: 0.5rem;
  }

  .form-group input, .form-group textarea {
    padding: 1rem 1.2rem;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 1rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.2s ease;
  }

  .form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px var(--input-focus);
    background: oklch(1 0 0 / 0.08);
  }

  .generate-btn, .submit-btn, .ai-btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: 1rem 3rem;
    font-size: 1.1rem;
    font-weight: 700;
    border: none;
    background: var(--accent-color);
    color: white;
    border-radius: 1rem;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    overflow: hidden;
    text-decoration: none;
  }

  .submit-btn {
    margin-top: 1rem;
    background: oklch(0.6 0.1 250);
  }

  .ai-btn {
    background: oklch(0.6 0.2 150);
  }

  .generate-btn:hover, .submit-btn:hover, .ai-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow-effect);
  }

  .generate-btn:active, .submit-btn:active, .ai-btn:active {
    transform: translateY(0);
  }

  .btn-text {
    position: relative;
    z-index: 1;
  }

  .btn-glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, white / 0.3, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s;
  }

  .generate-btn:hover .btn-glow, .submit-btn:hover .btn-glow, .ai-btn:hover .btn-glow {
    opacity: 1;
  }
}

@layer utilities {
  @container (max-width: 450px) {
    .ball-container {
      gap: 0.5rem;
    }
    
    .container {
      padding: 2rem 1.5rem;
      gap: 3rem;
    }

    .header h1, .header h2 {
      font-size: 1.8rem;
    }

    .nav-links {
      gap: 1rem;
    }

    .nav-link {
      font-size: 0.9rem;
    }
    
    .footer-links {
      gap: 1rem;
    }
  }
}