:root {
        --bg-primary: #000000;
        --bg-secondary: #0a0a0a;
        --text-main: #ffffff;
        --text-secondary: #b3b3b3;
        --accent-red: #ffffff;
        --card-border: rgba(255, 255, 255, 0.1);
        --button-gradient: linear-gradient(135deg, #a855f7, #9333ea);
      }
      * {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
        font-family: Inter, sans-serif;
      }
      body {
        background-color: var(--bg-dark);
        color: var(--text-main);
        display: flex;
        justify-content: center;
        align-items: center;
        min-height: 100vh;
        background-image: radial-gradient(
          circle at center,
          var(--bg-secondary) 0,
          var(--bg-primary) 100%
        );
      }
      .auth-container {
        width: 100%;
        display: flex;
        justify-content: center;
        padding: 20px;
      }
      .auth-card {
        background: rgba(20, 20, 20, 0.6);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border: 1px solid var(--card-border);
        padding: 2.5rem;
        border-radius: 16px;
        width: 100%;
        max-width: 400px;
        text-align: center;
        box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
      }
      .auth-title {
        font-family: Outfit, sans-serif;
        font-size: 2rem;
        font-weight: 800;
        margin-bottom: 0.5rem;
      }
      .auth-subtitle {
        color: var(--text-secondary);
        font-size: 0.9rem;
        margin-bottom: 2rem;
      }
      .form-group {
        margin-bottom: 1.5rem;
        text-align: left;
      }
      .form-label {
        display: block;
        margin-bottom: 0.5rem;
        color: var(--text-secondary);
        font-size: 0.9rem;
      }
      .form-input {
        width: 100%;
        background: var(--bg-secondary);
        border: 1px solid #333;
        padding: 1rem;
        border-radius: 8px;
        color: #fff;
        font-size: 1rem;
        outline: 0;
        transition: border-color 0.3s;
      }
      .form-input:focus {
        border-color: var(--primary);
      }
      .avatar-grid {
        display: flex;
        gap: 15px;
        justify-content: center;
        margin-bottom: 1rem;
        flex-wrap: wrap;
      }
      .avatar-option {
        width: 70px;
        height: 70px;
        border-radius: 50%;
        border: 3px solid var(--card-border);
        cursor: pointer;
        transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        opacity: 0.8;
        padding: 2px;
        background: rgba(255, 255, 255, 0.05);
      }
      .avatar-option:hover {
        transform: scale(1.15);
        opacity: 1;
        border-color: var(--text-secondary);
      }
      .avatar-option.selected {
        border-color: var(--accent-purple);
        opacity: 1;
        box-shadow: 0 0 20px rgba(255, 255, 255, 0.6);
        transform: scale(1.15);
        background: rgba(255, 255, 255, 0.1);
      }
      .btn-shuffle {
        background: 0 0;
        border: 1px solid var(--card-border);
        color: var(--text-secondary);
        padding: 8px 16px;
        border-radius: 20px;
        font-size: 0.8rem;
        cursor: pointer;
        transition: all 0.2s;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        margin-bottom: 1rem;
      }
      .btn-shuffle:hover {
        border-color: var(--text-main);
        color: var(--text-main);
        background: rgba(255, 255, 255, 0.05);
      }
      .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 1rem 2rem;
        border-radius: 30px;
        font-weight: 600;
        cursor: pointer;
        transition:
          transform 0.2s,
          box-shadow 0.2s;
        text-decoration: none;
        border: none;
      }
      .btn-primary {
        background: var(--button-gradient);
        color:#ffffff;
        box-shadow: 0 4px 15px rgba(168, 85, 247, 0.4);
      }
      .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(168, 85, 247, 0.6);
      }
      .btn-primary:disabled {
        opacity: 0.7;
        cursor: not-allowed;
        transform: none;
      }
      .modal-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.8);
        backdrop-filter: blur(10px);
        z-index: 1000;
        display: none;
        justify-content: center;
        align-items: center;
        opacity: 0;
        transition: opacity 0.3s ease;
      }
      .modal-overlay.active {
        opacity: 1;
      }
      .modal-content {
        background: #141414;
        border: 1px solid rgba(255, 255, 255, 0.3);
        text-align: center;
        padding: 2.5rem;
        border-radius: 16px;
        max-width: 450px;
        width: 90%;
        animation: slideUp 0.4s ease;
      }
      .modal-icon {
        width: 60px;
        height: 60px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.1);
        color: var(--accent-purple);
        border: 1px solid rgba(255, 255, 255, 0.3);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.5rem;
        margin: 0 auto 1.5rem;
      }
      @keyframes slideUp {
        from {
          transform: translateY(20px);
          opacity: 0;
        }
        to {
          transform: translateY(0);
          opacity: 1;
        }
      }