body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(120deg, #e0eafc 0%, #cfdef3 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 1rem;
}

.form-container {
    background: #fff;
    padding: 2rem 2.5rem;
    border-radius: 18px;
    box-shadow: 0 8px 32px rgba(66,133,244,0.10);
    width: 100%;
    max-width: 350px;
}

.form-container h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #2d3a4a;
    font-size: clamp(1.3rem, 4vw, 1.6rem);
    letter-spacing: 1px;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #4a5a6a;
    font-size: clamp(0.9rem, 2vw, 1rem);
    font-weight: 600;
}

.form-group input {
    width: 100%;
    padding: 0.7rem 0.9rem;
    border: 1px solid #d1d9e6;
    border-radius: 7px;
    font-size: clamp(0.9rem, 2vw, 1rem);
    background: #f8fafc;
    box-sizing: border-box;
    transition: border 0.2s, background 0.2s;
}

.form-group input:focus {
    border-color: #4285f4;
    outline: none;
    background: #fff;
}

.submit-btn {
    width: 100%;
    padding: 0.75rem;
    background: linear-gradient(90deg, #4285f4 60%, #34a853 100%);
    color: #fff;
    border: none;
    border-radius: 7px;
    font-size: clamp(0.95rem, 2vw, 1.08rem);
    font-weight: 700;
    cursor: pointer;
    margin-top: 1rem;
    box-shadow: 0 2px 8px rgba(66,133,244,0.08);
    transition: background 0.2s ease;
}

.submit-btn:hover {
    background: linear-gradient(90deg, #357ae8 60%, #2c8c47 100%);
}

.submit-btn:active {
    transform: scale(0.98);
}

.login-link {
    display: block;
    text-align: center;
    margin-top: 1rem;
    color: #4285f4;
    text-decoration: none;
    font-size: clamp(0.85rem, 2vw, 0.95rem);
    transition: color 0.2s ease;
    
}

.login-link:hover {
    color: #2c8c47;
    text-decoration: underline;
}

/* Tablet and small screens */
@media (max-width: 768px) {
    body {
        padding: 0.75rem;
    }
    
    .form-container {
        padding: 1.8rem 2rem;
    }
}

/* Mobile devices */
@media (max-width: 480px) {
    body {
        padding: 0.5rem;
        align-items: flex-start;
        padding-top: 2rem;
    }
    
    .form-container {
        padding: 1.5rem 1.5rem;
        border-radius: 14px;
    }
    
    .form-container h2 {
        margin-bottom: 1.2rem;
    }
    
    .form-group {
        margin-bottom: 0.9rem;
    }
    
    .form-group input,
    .submit-btn {
        padding: 0.65rem;
    }
}

/* Very small devices */
@media (max-width: 360px) {
    .form-container {
        padding: 1.2rem 1rem;
    }
    
    .form-container h2 {
        margin-bottom: 1rem;
    }
}

/* Landscape mobile */
@media (max-width: 768px) and (orientation: landscape) {
    body {
        align-items: flex-start;
        padding-top: 1rem;
        padding-bottom: 1rem;
    }
    
    .form-container {
        padding: 1.2rem 2rem;
    }
    
    .form-container h2 {
        margin-bottom: 1rem;
    }
    
    .form-group {
        margin-bottom: 0.7rem;
    }
}

/* Touch device optimization */
@media (hover: none) and (pointer: coarse) {
    .form-group input,
    .submit-btn {
        min-height: 44px;
    }
    
    .login-link {
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
}