/* Authentication Styles */
.auth-container {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
    transition: background-color 0.3s ease;
}

.auth-form {
    background: var(--surface-bg);
    border-radius: 16px;
    box-shadow: var(--box-shadow-lg);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    animation: slideUp 0.5s ease-out;
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.auth-header h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 8px;
    transition: color 0.3s ease;
}

.auth-header p {
    color: var(--gray-600);
    font-size: 16px;
    line-height: 1.5;
    transition: color 0.3s ease;
}

.auth-form .form-group {
    margin-bottom: 24px;
}

.auth-form .form-group label {
    color: var(--text-color);
    font-weight: 500;
    margin-bottom: 8px;
    display: block;
}

.auth-form .form-group input {
    width: 100%;
    padding: 16px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: var(--card-bg);
    color: var(--text-color);
}

.auth-form .form-group input::placeholder {
    color: var(--gray-500);
}

.auth-form .form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--surface-bg);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.auth-form .form-group input:invalid {
    border-color: var(--danger-color);
}

.auth-form .btn {
    width: 100%;
    padding: 16px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 12px;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border: none;
    color: white;
    transition: all 0.3s ease;
}

.auth-form .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--primary-light);
}

.auth-links {
    text-align: center;
}

.auth-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.auth-links a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Error Messages */
.auth-error {
    background: rgba(244, 67, 54, 0.1);
    color: var(--danger-color);
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    border-left: 4px solid var(--danger-color);
    font-size: 14px;
}

.auth-success {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success-color);
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    border-left: 4px solid var(--success-color);
    font-size: 14px;
}

/* Loading state for auth forms */
.auth-form .btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.auth-form .btn:disabled:hover {
    transform: none;
    box-shadow: none;
}

/* Responsive Design */
@media (max-width: 480px) {
    .auth-form {
        padding: 24px;
        margin: 12px;
    }

    .auth-header h1 {
        font-size: 24px;
    }

    .auth-header p {
        font-size: 14px;
    }

    .auth-form .form-group input {
        padding: 12px;
        font-size: 14px;
    }

    .auth-form .btn {
        padding: 12px;
        font-size: 14px;
    }
}
