body {
        background: #f0f2f5;
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    }

    .auth-container {
        min-height: 90vh; /* Full height centering */
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 20px;
    }

    .premium-card {
        background: #ffffff;
        border: none;
        border-radius: 20px;
        box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
        padding: 40px;
        max-width: 420px;
        width: 100%;
        transition: transform 0.3s ease;
    }

    .premium-card:hover {
        transform: translateY(-5px);
    }

    .icon-circle {
        width: 70px;
        height: 70px;
        background: #eef2ff; /* Light Indigo bg */
        color: #4f46e5;      /* Indigo icon color */
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 20px;
        font-size: 28px;
    }

    .form-control-premium {
        background-color: #f9fafb;
        border: 2px solid #edf2f7;
        border-radius: 12px;
        padding: 12px 15px;
        font-size: 15px;
        transition: all 0.3s ease;
    }

    .form-control-premium:focus {
        background-color: #fff;
        border-color: #4f46e5;
        box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
        outline: none;
    }

    .btn-premium {
        background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
        border: none;
        border-radius: 12px;
        padding: 12px;
        font-weight: 600;
        font-size: 16px;
        letter-spacing: 0.5px;
        width: 100%;
        color: white;
        margin-top: 10px;
        box-shadow: 0 4px 15px rgba(79, 70, 229, 0.35);
        transition: all 0.3s ease;
    }

    .btn-premium:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(79, 70, 229, 0.45);
        color: white;
    }
    
    .forgot-link {
        font-size: 13px;
        color: #4f46e5;
        font-weight: 600;
        text-decoration: none;
        transition: color 0.2s;
    }
    
    .forgot-link:hover {
        color: #3730a3;
        text-decoration: underline;
    }

    .signup-link {
        color: #4f46e5;
        font-weight: 600;
        text-decoration: none;
    }
    
    .input-label {
        font-size: 12px;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.8px;
        color: #6b7280;
        margin-bottom: 6px;
        display: block;
    }