.auth-page {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100vw;
        height: 100vh;
        background: linear-gradient(135deg, rgba(108, 92, 231, 0.9) 0%, rgba(162, 155, 254, 0.85) 100%),
                    url('https://images.unsplash.com/photo-1506905925346-21bda4d32df4?w=1920&q=80') center/cover no-repeat;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 20px;
        overflow-y: auto;
        z-index: 100;
    }

    .auth-card {
        width: 100%;
        max-width: 400px;
        animation: slideUp 0.5s ease-out;
    }

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

    .auth-header {
        text-align: center;
        margin-bottom: 32px;
    }

    .auth-header .logo {
        font-size: 1.4rem;
        font-weight: 700;
        color: white;
        text-decoration: none;
        text-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }

    .auth-header h1 {
        font-size: 1.3rem;
        margin-top: 16px;
        color: rgba(255,255,255,0.95);
        font-weight: 500;
    }

    .auth-form {
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-radius: 20px;
        padding: 28px 24px;
        box-shadow: 0 8px 32px rgba(0,0,0,0.15);
    }

    .auth-form .form-group label {
        color: #555;
        font-size: 0.9rem;
    }

    .auth-form .form-control {
        background: #f8f9fa;
        border: 1px solid #e9ecef;
        transition: all 0.2s;
    }

    .auth-form .form-control:focus {
        background: white;
        border-color: #6c5ce7;
        box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.1);
    }

    .auth-footer {
        text-align: center;
        margin-top: 24px;
        color: rgba(255,255,255,0.9);
        font-size: 0.9rem;
    }

    .auth-footer a {
        color: white;
        text-decoration: none;
        font-weight: 600;
        border-bottom: 2px solid rgba(255,255,255,0.5);
        padding-bottom: 2px;
        transition: border-color 0.2s;
    }

    .auth-footer a:hover {
        border-color: white;
    }

    .error-list {
        background: #f8d7da;
        color: #721c24;
        padding: 12px 16px;
        border-radius: 10px;
        margin-bottom: 16px;
        font-size: 0.85rem;
    }

    .error-list ul {
        list-style: none;
    }

    .password-help {
        font-size: 0.75rem;
        color: #888;
        margin-top: 6px;
    }

    .terms-agreement {
        margin: 20px 0;
    }

    .terms-agreement .checkbox-label {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        font-size: 0.85rem;
        color: #555;
        cursor: pointer;
    }

    .terms-agreement input[type="checkbox"] {
        width: 18px;
        height: 18px;
        margin-top: 2px;
        accent-color: #6c5ce7;
        cursor: pointer;
        flex-shrink: 0;
    }

    .terms-agreement a {
        color: #6c5ce7;
        text-decoration: underline;
    }

    .terms-agreement a:hover {
        color: #5b4cdb;
    }

    /* ==========================================
       RESPONSIVE STYLES
       ========================================== */

    /* Tablet (768px and up) */
    @media (min-width: 768px) {
        .auth-page {
            padding: 40px;
        }

        .auth-card {
            max-width: 440px;
        }

        .auth-header {
            margin-bottom: 40px;
        }

        .auth-header .logo {
            font-size: 1.8rem;
        }

        .auth-header h1 {
            font-size: 1.5rem;
            margin-top: 20px;
        }

        .auth-form {
            padding: 36px 32px;
            border-radius: 24px;
        }

        .auth-form .form-group label {
            font-size: 0.95rem;
        }

        .password-help {
            font-size: 0.8rem;
        }

        .auth-footer {
            margin-top: 28px;
            font-size: 0.95rem;
        }
    }

    /* Desktop (1024px and up) */
    @media (min-width: 1024px) {
        .auth-card {
            max-width: 480px;
        }

        .auth-header .logo {
            font-size: 2rem;
        }

        .auth-header h1 {
            font-size: 1.7rem;
        }

        .auth-form {
            padding: 44px 40px;
        }

        .auth-form .form-group label {
            font-size: 1rem;
        }

        .password-help {
            font-size: 0.85rem;
        }

        .auth-footer {
            margin-top: 32px;
            font-size: 1rem;
        }
    }

    /* Large Desktop (1200px and up) */
    @media (min-width: 1200px) {
        .auth-card {
            max-width: 500px;
        }

        .auth-form {
            padding: 48px 44px;
        }
    }