body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-container {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    border: 1px solid rgba(255, 255, 255, 0.18);
    width: 100%;
    max-width: 400px;
    animation: fadeIn 0.5s ease-out;
}

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

.form-input {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    padding: 12px;
    color: white;
    width: 100%;
    transition: all 0.3s ease;
}

.form-input:focus {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    outline: none;
}

.form-input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.btn-auth {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 10px;
    padding: 12px;
    color: white;
    font-weight: 600;
    width: 100%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-auth:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.flash-message {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 10px;
    margin-bottom: 20px;
    color: white;
    text-align: center;
    animation: slideIn 0.3s ease-out;
}

.flash-message.error {
    background: rgba(255, 0, 0, 0.2);
    border: 1px solid rgba(255, 0, 0, 0.3);
}

.flash-message.success {
    background: rgba(0, 255, 0, 0.2);
    border: 1px solid rgba(0, 255, 0, 0.3);
}

.flash-message.warning {
    background: rgba(255, 165, 0, 0.2);
    border: 1px solid rgba(255, 165, 0, 0.3);
}

@keyframes slideIn {
    from { transform: translateX(-100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.password-requirements {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 5px;
}

.auth-link {
    color: #a5b4fc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.auth-link:hover {
    color: #818cf8;
    text-decoration: underline;
}