/* * -----------------------------------------------------------
     * FUTURISTIC THEME ENGINE
     * -----------------------------------------------------------
     */
    :root {
      /* Light Mode Variables (Futuristic Clean) */
      --bg-color: #eef2f6;
      --glass-bg: rgba(255, 255, 255, 0.75);
      --glass-border: rgba(255, 255, 255, 0.8);
      --text-main: #1a202c;
      --text-muted: #64748b;
      --primary: #3b82f6;
      --primary-glow: rgba(59, 130, 246, 0.4);
      --accent: #8b5cf6;
      --success: #10b981;
      --error: #ef4444;
      --card-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
      --input-bg: rgba(255, 255, 255, 0.9);
    }

    [data-theme="dark"] {
      /* Dark Mode Variables (Cyberpunk/Neon) */
      --bg-color: #0f172a;
      --glass-bg: rgba(17, 25, 40, 0.75);
      --glass-border: rgba(255, 255, 255, 0.1);
      --text-main: #e2e8f0;
      --text-muted: #94a3b8;
      --primary: #00d4ff; /* Neon Cyan */
      --primary-glow: rgba(0, 212, 255, 0.4);
      --accent: #bd00ff; /* Neon Purple */
      --success: #00ff9d;
      --error: #ff4d4d;
      --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
      --input-bg: rgba(0, 0, 0, 0.3);
    }

    * { box-sizing: border-box; transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease; }

    body {
      font-family: 'Outfit', sans-serif;
      background-color: var(--bg-color);
      /* Subtle animated mesh gradient background */
      background-image: 
        radial-gradient(at 0% 0%, hsla(253,16%,7%,1) 0, transparent 50%), 
        radial-gradient(at 50% 0%, hsla(225,39%,30%,1) 0, transparent 50%), 
        radial-gradient(at 100% 0%, hsla(339,49%,30%,1) 0, transparent 50%);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 2rem 1rem;
      margin: 0;
      overflow-x: hidden;
    }

    /* Background Animation Overlay */
    .bg-overlay {
      position: fixed;
      top: 0; left: 0; width: 100%; height: 100%;
      z-index: -1;
      background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%239C92AC' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    }

    .container {
      width: 100%;
      max-width: 800px;
      position: relative;
      z-index: 1;
    }

    /* * GLASS CARD 
     */
    .card {
      background: var(--glass-bg);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--glass-border);
      border-radius: 24px;
      padding: 3rem;
      box-shadow: var(--card-shadow);
      position: relative;
      overflow: hidden;
    }

    /* Top border glow line */
    .card::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--primary), transparent);
      opacity: 0.7;
    }

    /* --- THEME TOGGLE --- */
    .theme-toggle {
      position: absolute;
      top: 1.5rem;
      right: 1.5rem;
      z-index: 10;
    }

    #themeToggle {
      background: var(--input-bg);
      border: 1px solid var(--glass-border);
      color: var(--text-main);
      width: 40px;
      height: 40px;
      border-radius: 50%;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all 0.3s ease;
    }

    #themeToggle:hover {
      box-shadow: 0 0 15px var(--primary-glow);
      border-color: var(--primary);
      transform: rotate(15deg);
    }

    /* --- HEADER --- */
    .header {
      text-align: center;
      margin-bottom: 2.5rem;
    }

    .header-icon-container {
      position: relative;
      width: 80px;
      height: 80px;
      margin: 0 auto 1.5rem;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .header-icon-container::after {
      content: '';
      position: absolute;
      inset: -5px;
      border-radius: 50%;
      background: linear-gradient(45deg, var(--primary), var(--accent));
      z-index: -1;
      filter: blur(15px);
      opacity: 0.5;
      animation: pulse-glow 3s infinite;
    }

    @keyframes pulse-glow {
      0%, 100% { opacity: 0.5; transform: scale(1); }
      50% { opacity: 0.8; transform: scale(1.1); }
    }

    .icon-primary {
      width: 48px;
      height: 48px;
      stroke: var(--text-main);
      stroke-width: 1.5;
    }

    h1 {
      font-size: 2.5rem;
      font-weight: 700;
      margin: 0;
      background: linear-gradient(135deg, var(--text-main) 30%, var(--primary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -1px;
    }

    .header-subtitle {
      color: var(--text-muted);
      margin-top: 0.5rem;
      font-size: 1.1rem;
    }

    /* --- UPLOAD ZONE --- */
    .section-header {
      font-size: 0.9rem;
      text-transform: uppercase;
      letter-spacing: 0.1em;
      color: var(--text-muted);
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .file-upload {
      position: relative;
      border: 2px dashed var(--glass-border);
      border-radius: 16px;
      padding: 3rem 1.5rem;
      text-align: center;
      cursor: pointer;
      background: var(--input-bg);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      overflow: hidden;
    }

    .file-upload:hover, .file-upload.dragover {
      border-color: var(--primary);
      background: rgba(59, 130, 246, 0.05);
      box-shadow: inset 0 0 20px var(--primary-glow);
    }

    .file-upload input {
      position: absolute;
      width: 100%; height: 100%; top: 0; left: 0;
      opacity: 0; cursor: pointer; z-index: 2;
    }

    .upload-icon {
      stroke: var(--text-muted);
      width: 48px; height: 48px;
      margin-bottom: 1rem;
      transition: stroke 0.3s;
    }

    .file-upload:hover .upload-icon {
      stroke: var(--primary);
    }

    .upload-text {
      font-size: 1.1rem;
      font-weight: 500;
      color: var(--text-main);
    }

    .upload-subtext {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-top: 0.25rem;
    }

    /* --- SELECT --- */
    select {
      width: 100%;
      padding: 1rem;
      background: var(--input-bg);
      border: 1px solid var(--glass-border);
      color: var(--text-main);
      border-radius: 12px;
      font-family: 'Outfit', sans-serif;
      font-size: 1rem;
      outline: none;
      cursor: pointer;
    }

    select:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 4px var(--primary-glow);
    }

    /* --- BUTTON --- */
    .btn-container { margin-top: 2rem; }

    .btn {
      width: 100%;
      padding: 1.25rem;
      border: none;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: white;
      font-size: 1.1rem;
      font-weight: 700;
      letter-spacing: 0.5px;
      cursor: pointer;
      position: relative;
      overflow: hidden;
      transition: all 0.3s;
      box-shadow: 0 4px 15px var(--primary-glow);
    }

    .btn:disabled {
      background: var(--glass-border);
      color: var(--text-muted);
      cursor: not-allowed;
      box-shadow: none;
    }

    .btn:not(:disabled):hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px var(--primary-glow);
    }

    /* --- SUPPORTED FIELDS GRID --- */
    .fields-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
      gap: 0.75rem;
      margin-top: 1rem;
    }

    .field-item {
      background: var(--input-bg);
      border: 1px solid var(--glass-border);
      padding: 0.5rem 0.75rem;
      border-radius: 8px;
      font-size: 0.8rem;
      display: flex;
      flex-direction: column;
      gap: 2px;
    }

    .field-badge {
      font-family: 'JetBrains Mono', monospace;
      color: var(--primary);
      font-weight: 700;
      font-size: 0.75rem;
    }

    .field-desc {
      color: var(--text-muted);
      font-size: 0.75rem;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    /* --- INFO BOX --- */
    .info-box {
      margin-top: 2rem;
      background: rgba(16, 185, 129, 0.05);
      border: 1px solid rgba(16, 185, 129, 0.2);
      border-radius: 12px;
      padding: 1.5rem;
    }

    .info-title {
      color: var(--success);
      margin: 0 0 0.5rem 0;
      font-size: 0.9rem;
      font-weight: 700;
      text-transform: uppercase;
    }

    .info-list {
      margin: 0;
      padding-left: 1.25rem;
      color: var(--text-muted);
      font-size: 0.9rem;
      line-height: 1.6;
    }

    /* --- FOOTER (Developer Signature) --- */
    footer {
      margin-top: 3rem;
      text-align: center;
      padding-bottom: 2rem;
      width: 100%;
    }

    .dev-signature {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      padding: 12px 24px;
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: 50px;
      backdrop-filter: blur(10px);
      box-shadow: 0 4px 20px rgba(0,0,0,0.1);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .dev-signature:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 30px var(--primary-glow);
      border-color: var(--primary);
    }

    .dev-avatar {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-weight: bold;
      font-size: 14px;
    }

    .dev-info {
      text-align: left;
      line-height: 1.2;
    }

    .dev-label {
      font-size: 0.7rem;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .dev-name {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      background: linear-gradient(90deg, var(--text-main), var(--primary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    /* Utilities */
    .hidden { display: none !important; }
    .space-y-8 > * + * { margin-top: 2rem; }
    .space-y-4 > * + * { margin-top: 1rem; }
    .icon-sm { width: 20px; height: 20px; }
    
    /* Messages */
    .status-message {
        padding: 1rem;
        border-radius: 12px;
        font-weight: 500;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }
    .status-message.error { background: rgba(239, 68, 68, 0.1); color: var(--error); border: 1px solid rgba(239, 68, 68, 0.2); }
    .status-message.success { background: rgba(16, 185, 129, 0.1); color: var(--success); border: 1px solid rgba(16, 185, 129, 0.2); }